Water Pressure Relief Valves
Description
Water pressure relief valves are self-operating devices designed to regulate fluid flow and prevent over-pressurization within a system. These valves maintain a preset pressure level by allowing excess water to exit the system when the pressure exceeds a specified limit. They are typically closed under normal conditions and open only when the system pressure surpasses the set threshold.
Working Principle
Water pressure relief valves operate using a spring-loaded mechanism. The valve remains closed due to the force exerted by a spring on the valve disk or diaphragm. When the pressure in the system exceeds the preset limit, it overcomes the spring force, causing the valve to open and release the excess pressure. This mechanism ensures that the system pressure remains within safe limits, protecting equipment and preventing potential damage from over-pressurization .
Applications
Water pressure relief valves are used in various applications to ensure safety and efficiency. They are commonly found in water treatment plants, industrial facilities, and residential plumbing systems. For example, in a water treatment plant, these valves help maintain optimal pressure levels to protect sensitive equipment and ensure smooth operation. In residential settings, they prevent damage to plumbing fixtures and appliances by regulating water pressure from the main supply .
Advantages over other Process - Valves
Water pressure relief valves offer several advantages over other types of process valves. They provide automatic pressure regulation without the need for external control systems, making them reliable and easy to maintain. Additionally, their ability to quickly respond to pressure changes helps prevent system failures and reduces the risk of equipment damage. This makes them particularly advantageous in applications where maintaining consistent pressure is critical .
Limitations
Despite their benefits, water pressure relief valves have some limitations. They may not be suitable for applications requiring precise pressure control, as their operation is based on preset pressure limits. Additionally, they can experience wear and tear over time, particularly in systems with frequent pressure fluctuations, which may lead to maintenance challenges and potential valve failure .
Considerations
When selecting and using water pressure relief valves, several factors should be considered. Initial costs can vary depending on the valve design and materials used. Operating expenses are generally low, as these valves are self-operating and require minimal external control. However, durability can be a concern, especially in harsh environments or systems with high-frequency pressure changes. Regular maintenance and inspection are essential to ensure accuracy and prolong the valve's lifespan. Replacement costs should also be factored into the overall cost of ownership, as valves may need to be replaced periodically due to wear and tear .
from Shenzhen Dechengwang Technology Co., Ltd
Seats and inserts, which are important components in the valve industry, as a critical component, PTFE is very often to choose as the raw material. PTFE provides a low friction seat, with excellent media compatibility. Filled grades provide wear resistance and can support seating loads of the higher... [See More]
- Media: Hydraulic; Water; Hot Water; Cold Water ; Ground Water (optional feature); Potable Water; Salt Water; Wastewater (optional feature); Gasoline / Diesel Fuel; High Purity; LP Gas; Specialty Corrosive
- Features: Solenoid; Diaphragm (optional feature)
from Plast-O-Matic Valves, Inc.
Series TRVDT is a high flow relief/by-pass valve with 3-port design, ideal for applications where minimal footprint is required or where use of a piping tee is impractical. Valve has a straight-through flow pattern when closed. When set point is exceeded, the diaphragm is lifted off the center port,... [See More]
- Media: Water; Ultra-Pure Water, Conc. Etchants
- Maximum Pressure: 150.00
- Valve Size: 0.50 to 1.00
- Connection Description: Threaded; 1/2" NPT - 1" NPT
from Radwell International
1 1/2" X 2" 40# HOT WATER RELIEF 4, 1 1/2"FEMALE NPT INLET X 2"FEMALE NPT OUTLET, HOT WATER HIGH-CAPACITY PRESSURE RELIEF VALVE. FREE 2 YEAR RADWELL WARRANTY [See More]
- Media: Water
from DigiKey
Pressure Switch Sub-Base Mount [See More]
- Media: Air; Water; Gas
- Connection Description: Threaded
- Maximum Pressure: 15.00 to 174.00
from Shenzhen Dechengwang Technology Co., Ltd
Dechengwang is a specialized Fluoropolymer components manufacturer. Since 2006, the material range expaned from Virgin PTFE to Modified PTFE, PTFE compound, PEEK, PFA, PCTFE, PVDF, PI, PPS and PEI material. The use of fluoroplastic has many advantages in manufacturing and engineering, widely used in... [See More]
- Media: Hydraulic; Water; Hot Water; Cold Water ; Potable Water; Salt Water; Wastewater (optional feature); Gasoline / Diesel Fuel; High Purity; LP Gas; Specialty Corrosive; Steam (optional feature)
- Features: Solenoid; Diaphragm (optional feature)
- Actuation: Manual
from Plast-O-Matic Valves, Inc.
Series RVDT/RVDTM is a universal automatic backpressure control valve for pressure relief, pump backpressure, pump bypass, anti-siphon, and backpressure regulator applications. Thermoplastic or Metal Valves designed for smooth, sensitive operation and the ultimate in corrosion resistance or... [See More]
- Media: Water; Ultra-Pure Water, Conc. Etchants
- Maximum Pressure: 5.00 to 150.00
- Valve Size: 0.25 to 2.00
- Connection Description: Threaded; 1/4" NPT - 2" NPT
from Radwell International
SAFETY RELIEF VALVE, SERIES: 10-300 SERIES, 3/4 IN NOMINAL, MNPT X FNPT CONNECTION, 40 PSIG, HOT WATER, LIQUID AND WATER MEDIA, LIFT LEVER ACTUATOR, BRASS TRIM, EPDM/SILICONE SOFTGOODS, BRONZE BODY, PLAIN BRASS, 250 DEG F, 3.82 IN HEIGHT. FREE 2 YEAR RADWELL WARRANTY [See More]
- Media: Water
- Primary Material: Brass / Bronze
from DigiKey
Pressure Operated Pressure Switch DIN Rail [See More]
- Media: Air; Water; Gas
- Maximum Pressure: 30.00 to 116.00
- Valve Size: 0.16
from Radwell International
RELIEF VALVE, 3/4" MALE NPT INLET X 3/4" FEMALE NPT OUTLET, SET AT 25 PSI, 485,000 BTU CAPACITY, 250 DEGREES F MAXIMUM TEMPERATURE SERVICE, ASME SECTION IV BRASS HOT WATER PRESSURE RELIEF VALVE. FREE 2 YEAR RADWELL WARRANTY [See More]
- Media: Water
- Primary Material: Brass / Bronze
from DigiKey
Pressure Operated Pressure Switch Sub-Base Mount [See More]
- Media: Air; Water; Gas
- Maximum Pressure: ? to 20.00
from Radwell International
RELIEF VALVE, 100 IN WATER. FREE 2 YEAR RADWELL WARRANTY [See More]
- Media: Water
from DigiKey
Pressure Operated Pressure Switch Sub-Base Mount [See More]
- Media: Air; Water; Gas
- Maximum Pressure: ? to 20.00
from Radwell International
WATER PRESSURE RELIEF VALVE,1 IN IRON BOILER PRESSURE RELIEF VALVE, 50 PSI, EXPANDED OUTLETS. FREE 2 YEAR RADWELL WARRANTY [See More]
- Media: Water
from DigiKey
Pressure Operated Pressure Switch DIN Rail [See More]
- Media: Air; Water; Gas
- Maximum Pressure: 4.00 to 17.00
- Valve Size: 0.16
from Radwell International
TEMPERATURE AND PRESSURE RELIEF VALVE, FOR WATER HEATERS, NCLX-5, BRONZE, 3/4 INCH, 125PSI, 210 °F, 105000 BTU/HR, ASME, 500000 BTU/HR, MAX HEATER INPUT, LONG PROBE, UPC #697285159143 . FREE 2 YEAR RADWELL WARRANTY [See More]
- Media: Water
from DigiKey
Pressure Operated Pressure Switch Chassis Mount [See More]
- Media: Air; Water; Gas
- Maximum Pressure: 30.00 to 116.00
- Valve Size: 0.12
- Connection Description: Threaded
from Radwell International
TEMPERATURE AND PRESSURE RELIEF VALVE, FOR WATER HEATERS, NCLX-5L, 3/4 INCH, CAST BRONZE BODY, 150 PSI, TEMPERATURE RELIEF: 210F (98.9C) STANDARD, 500000 BTU/HR MAX HEATER INPUT, 105000 BTU/HR, ASME, UPC: 697285188211 . FREE 2 YEAR RADWELL WARRANTY [See More]
- Media: Water
from DigiKey
Pressure Operated Pressure Switch DIN Rail [See More]
- Media: Air; Water; Gas
- Maximum Pressure: 30.00 to 116.00
- Valve Size: 0.16
from Radwell International
DISCONTINUED BY MANUFACTURER, PRESSURE RELIEF VALVE FOR HOT WATER, 1/2 INCH NPT, BRONZE, 15 PSIG, CAP 125 LB/HR H81C. FREE 2 YEAR RADWELL WARRANTY [See More]
- Media: Water
from DigiKey
Pressure Operated Pressure Switch Sub-Base Mount [See More]
- Media: Air; Water; Gas
- Maximum Pressure: 30.00 to 116.00
- Valve Size: 0.16
from DigiKey
Pressure Operated Pressure Switch Sub-Base Mount [See More]
- Media: Air; Water; Gas
- Maximum Pressure: 30.00 to 116.00
- Valve Size: 0.16
from Clark Solutions
The Series-22 Quarter-Turn Dia-Cam valve is a high flow capacity pinch valve, designed for hard-to handle fluids, especially slurries. The valve interior consists of a fabric reinforced elastomeric or PTFE-lined Diaphragm Spool... the only wetted component of the valve. Two opposing gear-driven... [See More]
- Media: Water
- Maximum Pressure: 3500.00
- Valve Size: 0.50 to 3.00
- Actuation: Electric
from General Pump
Check Valve, Brass. Features. Light Cracking Pressure. Brass Body with Stainless Wetted Parts. O-ring on Poppet for a Leak Proof Seal. Solid Body Construction, Won ’t Come Apart During Installation [See More]
- Media: Water; Hot Water; Cold Water
- Maximum Pressure: 2200.00
- Valve Size: 0.25 to 0.75
- Controlled Pressure Range: 2200.00 to 2300.00
from Chemac Inc./Uraca/Uhde HPT/Gather/BHDT
High Pressure Piping, Valves and Fittings. Based on the High-pressure valves and fittings to IG standards for pressure ratings of 325 and 700 bar, Chemac Inc offers these for pressure ratings of 500, 1600, 2500, 3200, 3600 and 4000 bar in similar construction with lens-type gaskets. Valves with... [See More]
- Media: Air; Water; Gas
- Features: Diaphragm
from Atos North America
New line of directional solenoid valves and pressure relief valves in stainless steel execution for corrosive environments. stainless steel solenoids, explosion-proof Ates, IECEx or cULus, for hazardous areas. Directional valves are available in two basic versions: poppet type, 3-way leak free or... [See More]
- Media: Hydraulic; Water
- Maximum Pressure: 7251.89
- Valve Size: 0.24
- Primary Material: Stainless Steel
from Hayward Flow Control
Pressure Regulator valves are available in PVC and Corzan CPVC. Seals are FPM only. End connections are threaded only. Pressure Regulator valves can be set from 5 - 75 PSI. Minimum charges for setting pressures exist. All valves are assembled with silicone free lubricant. Features. PVC or Corzan... [See More]
- Media: Water; Ground Water; Potable Water; Wastewater
- Maximum Pressure: 150.00
- Valve Size: 0.25 to 1.50
- Connection Description: Threaded
from Ames Fire & Waterworks
The Ames ACV 920A-UL (Angle) Relief Valve meets all requirements for UL listed, FM Approved fire protection service. The design and features incorporated in the Ames ACV valves assure accurate control, dependable performance, and long life. Also Available: Model 920G-UL: Globe Pattern Single Chamber... [See More]
- Media: Water; Hot Water; Cold Water ; Potable Water
- Controlled Pressure Range: 100.00 to 300.00
- Valve Size: 3.00 to 8.00
- Primary Material: Ductile Iron
from Harwood Engineering Company
Features. Service for liquids and gases for pressures up to 200,000 psi. Hydraulically-operated. Replaceable seat and packings. Hydraulic control pressure of 1,000-1,500 psi. Hydraulic control ports are ¼NPT. Options. Stainless steel valves for water service. Custom design available. [See More]
- Media: Air; Water; Gas
- Connection Description: Threaded; Inlet: 12H, Release Port: ¼ NPT
- Maximum Pressure: 200000.00
- Primary Material: Stainless Steel
from Equilibar, LLC.
Precision Back Pressure Regulator for Hygienic Service. For gas, liquid and mixed phase processes. Wide Range of working Pressures and Flows. Rugged 316 stainless steel Bar Stock Design with no Welded Fittings. Hygienic: No Crevices, <32Ra Finish. 3 Piece Low Dead Volume Design. Ports are the... [See More]
- Media: Hydraulic; Air; Breathable; Compressed Air; Water; Hot Water; Cold Water ; Ground Water; Potable Water; Salt Water; Wastewater; Gas; Gasoline / Diesel Fuel; High Purity; LP Gas; Natural Gas; Sour Gas; Specialty Corrosive; Powder Solids (optional feature); Steam
- Maximum Pressure: 0.00 to 150.00
- Valve Size: 0.50
- Controlled Pressure Range: 0.00 to 150.00
from FITOK GmbH
Founded in 1998, FITOK Group has been an industry-leading developer and manufacturer of superior quality instrumentation valves and fittings, having our R &D centers, manufacturing facilities, warehousing and service locations in Offenbach Germany, Texas USA, Shenzhen China and Dubai UAE. We... [See More]
- Media: Air; Compressed Air; Water
- Maximum Pressure: 1500.00 to 60000.00
- Valve Size: 0.08 to 0.31
- Connection Description: Threaded
from ISC Sales, Inc.
This unit senses the upstream pressure through a connection to the valve inlet. The valve and pilot remain closed until the inlet pressure exceeds the pilot setting. The valve opens rapidly to relieve damaging over pressure and closes smoothly at an adjustable speed, when the pressure returns below... [See More]
- Media: Water
- Connection Description: Threaded (optional feature); BoltFlange (optional feature); Socket Weld (optional feature); Threaded: 300# NPT or BSP, Flanged: ANSI 300#; ISO PN25; Au Class 21/35; Au; Table E/F, Flanged: ANSI 300#; ISO PN25; Au Class 21/35; Au; Table E/F
from FUJIKURA COMPOSITES Inc.
Features. High pressure range.(Max setting pressure: 4.2Mpa [609.16psi]). Small and light weight. Cracking pressure ’s setting is done before delivering. Applications. Machine Tools ：Milling machine, NC lathe, laser processing machine etc. Industrial furnace ：General industrial... [See More]
- Media: Air; Water
- Maximum Pressure: 986.25
- Valve Size: 0.12 to 0.75
- Connection Description: Threaded
from Cat Pumps - High Pressure Pumps & Systems
A Relief Valve, or Pop-Off Valve, is a secondary pressure regulating device used to back up the primary regulating device. If the primary regulating device fails to by-pass at a set system pressure, the relief valve will open and allow liquid to flow freely. A relief valve can save costly pump and... [See More]
- Media: Water
- Maximum Pressure: 150.00 to 400.00
- Valve Size: 2.00
- Connection Description: Threaded
from FEBCO
Reduced Pressure Zone Assemblies are used to protect against high hazard (toxic) fluids in water services to industrial plants, hospitals, morgues, mortuaries, and chemical plants. They are also used in irrigation systems, boiler feed, water lines and other installations requiring maximum... [See More]
- Media: Water; Potable Water
- Maximum Pressure: 20.00 to 175.00
- Valve Size: 0.50 to 10.00
- Connection Description: Threaded (optional feature); BoltFlange (optional feature)
from Sea Tech, Inc.
35 Series products are manufactured in polysulfone and certified to NSF-61, NSF-14, CSA B137.5, ASTM F877, IGC 188-04c and recognized by the Uniform Plumbing Code. [See More]
- Media: Water; Potable Water
- Maximum Pressure: 100.00 to 250.00
- Valve Size: 0.25 to 1.00
- Connection Description: Threaded (optional feature); Union (optional feature); Tube Fitting (optional feature)
from Taco Comfort Solutions
Taco's cartridge style pressure reducing valve sets a new standard for performance and serviceability. All the parts are contained in a one piece cartridge which can be easily removed and serviced without reducing the system pressure. A fast-fill mode that automatically returns to the normal mode... [See More]
- Media: Water
from Suttner America Company
Protects pressure washer against extreme pressure build-up. Pop off protection. [See More]
- Media: Water
- Maximum Pressure: 1000.00 to 4000.00
- Valve Size: 0.38
- Connection Description: Threaded
from Red Valve Company, Inc.
The Red Valve Series RSR Pressure Relief Valve is designed specifically for slurry applications. It is a reliable relief valve available for slurry service, venting surge pressures in the system, or to maintain system pressure. The valve operates very simply – making use of a spring loaded... [See More]
- Media: Water; Ground Water; Wastewater; Powder Solids; Slurries
- Maximum Pressure: 0.00 to 150.00
- Valve Size: 1.00 to 12.00
- Connection Description: BoltFlange
from Spirax-Sarco
The BDV depressurisation valves are designed to be fitted into " , ½ " and DN15 connections for drain / blowdown / purge and vent / depressurisation of pipework or products. The B DV1 provides discharge straight through the valve, generally to be used as a drain, or for line depressurisation... [See More]
- Media: Air; Water; Gas; Steam
- Maximum Pressure: 0.00 to 1232.82
- Valve Size: 0.38 to 0.50
- Connection Description: Threaded
from Curtiss-Wright, Valve Group
Curtis Wright provides a variety of industrial grade pressure relief valves that meet the harsh environments suitable for applications such as power and oil, petrochemical, hydrocarbon service, seawater cooling systems, offshore applications. Curtiss-Wright pressure relief valves are supplied... [See More]
- Media: Air; Water; Gas; Steam
- Controlled Pressure Range: 15.00 to 6500.00
- Valve Size: 0.50 to 24.00
from Watts
Series 140S, 140X Automatic Reseating Temperature and Pressure Relief Valves are used in commercial water heater applications to provide automatic temperature and pressure protection to domestic hot water supply tanks and hot water heaters. They feature a bronze body with NPT female inlet and NPT... [See More]
- Media: Water
- Valve Size: 0.75 to 1.00
from KZVALVE
The KZValve QX Series 3-Way, Side Load, Full Port, Ball Valves (On-On Diverter) are engineered for actuation and designed to work with the KZValve actuators. These reliable valves are proven performers season after season. • 3/4", 1" and 11/2" full port valves. • Ball: 316 stainless steel. [See More]
- Media: Air; Water; Gas; Oil
- Maximum Pressure: 150.00
- Valve Size: 1.00
- Connection Description: Threaded
from Watson McDaniel Company
The R Series & 10691 Series Back Pressure Relief Valves are used in the following applications: Water pump bypass for Irrigation, sprinkler systems on golf courses, fountains, and fire protection systems Fuel oil pump bypass on commercial systems or large residential systems The Relief Valve is... [See More]
- Media: Water; Liquids
- Controlled Pressure Range: 1.00 to 6.00
- Valve Size: 0.50
- Connection Description: Threaded; NPT
from Valcor Engineering Corporation
The SV101 is a Dri-Control liquid pressure relief valve employing a unique spring-loaded diaphragm that automatically opens when the inlet pressure reaches a manually set point. The virgin PTFE body and diaphragm provides the greatest degree of inertness, and allows for a high temperature... [See More]
- Media: Water; Ink & Toner in Printing Ink Systems
- Maximum Pressure: 125.00
- Valve Size: 0.25
- Controlled Pressure Range: 5.00 to 70.00
from Schutte & Koerting
Pressure Relief Valves are quick-opening, quick-closing valves used to protect equipment from gas pressure build up or pressure surges. Standard applications involve steam, gases, or liquids where a tight seating valve is required to prevent overpressure. Typical applications are in process... [See More]
- Media: Water; Gas; Steam
- Primary Material: Steel
- Maximum Pressure: 150.00 to 300.00
from DK-LOK U.S.A.
Up to 6000psig (413bar). Up to 204 ℃ (400 ℉). SS316. Cracking pressure 50 to 6000psing (3.4 to 413bar). DK-LOK OD 1/4 - 1/2 inch. Pipe thread 1/4 - 1/2 inch [See More]
- Media: Air; Water
- Maximum Pressure: 3000.00
- Valve Size: 0.19
- Controlled Pressure Range: 0.00 to 3000.00
from co-ax valves inc.
Function: pressure balanced pressure limitation valve, externally controlled or direct acting. Media: gaseous, liquid, highly viscous, contaminated. Body Materials: brass, aluminum, stainless steel, galvanized steel. Options: SAE connection, safety valve, mounting, special voltage, coil M 12 x 1,... [See More]
- Media: Hydraulic; Air; Breathable; Compressed Air; Water; Hot Water; Cold Water ; Ground Water; Potable Water; Salt Water; Wastewater; High Purity (optional feature); Specialty Corrosive (optional feature); Steam (optional feature)
- Maximum Pressure: 72.52 to 1740.45
- Valve Size: 0.59
- Controlled Pressure Range: 72.52 to 1740.45
from Malema Sensors
The M-VF-F Series is designed PFA molded body suitable for semiconductor, ultra-pure water and aggressive chemical applications. Features: High reliability. Factory set. Low pressure drop. All mechanical. Right-angle flow. Flare type connection. Bubble tight seal [See More]
- Media: Water
- Actuation: Mechanical
- Connection Description: Flare Type Connection
from Alfa Laval Inc.
CPM valves maintain uniform inlet or outlet pressure in hygienic process lines for the dairy, food and beverage industries. These regulating valves provide accurate pressure control, safe and reliable performance and excellent cleanability. Safe, effective pressure control. Alfa Laval Constant... [See More]
- Media: Water
- Maximum Pressure: 145.04
- Valve Size: 1.97 to 2.83
- Connection Description: Clamp Flange
from Qosina Corp.
Qosina is a leading supplier of Relief / Inflation Valve with 9/16 inch Diameter (14 mm), 1.9 - 2.3 psi CP. Get fast shipping and volume discounts on Relief Valves parts. [See More]
- Media: Air; Water
- Primary Material: Stainless Steel; PP; Acrylic, Al, PP, Silicone, SS
- Maximum Pressure: 1.90 to 2.30
from Trebor International
Many of our end users have lines with high backpressures, which can negatively affect the operation of AODD pumps. To help reduce the backpressure on pumps in such applications, we designed the Quick Exhaust Valve. In addition to reducing the exhaust backpressure, it can capture any chemical in the... [See More]
- Media: Air; Compressed Air; Water
- Connection Description: Threaded
from CEME
CEME has always been a reference point for the ironing and steam cleaning world. The most important brands in this sector rely on CEME for electro valves, pumps, pressure gauges and safety valves, so as to guarantee the utmost efficiency and quality for their products. . Temperature and... [See More]
- Media: Air; Water; Steam
from Zurn Industries LLC
The Zurn Wilkins P1550XL Pressure Relief Valve is installed on cold water service lines to protect against excessive pressure buildup. These devices are for pressure only and should be used in conjunction with other temperature limiting devices. To view all options, see the Specification Sheet. [See More]
- Media: Water
from Bell & Gossett, a xylem brand
Valves for protecting fired and unfired hot water vessels against hazardous operating pressures. Engineered in accordance with Section IV of the ASME boiler and pressure code for heating boilers with capacities certified by the National Board of Boiler and Pressure Vessel Inspectors. Offer the... [See More]
- Media: Water; Hot Water
- Maximum Pressure: 125.00
- Valve Size: 1.00
- Connection Description: Threaded
from Kelly Pneumatics, Inc.
Kelly Pneumatics, Inc. introduces an electronic pressure relief valve for high flow applications. This valve offers high-resolution pressure chamber control for applications that require high volume, relieving flow performance. Well used in applications that need to sustain a consistent chamber... [See More]
- Media: Air; Water
- Connection Description: Threaded; 1/8" or 1/4" FPT
- Maximum Pressure: 1.00 to 98.00
- Actuation: Electric
from Check-All Valve Mfg. Co.
The Bushing Valve is a check valve with a standard bushing housing. The valve is adaptable to many types of service applications. It has very little restriction and produces a low pressure drop. It can be used quite effectively in systems where flow and pressure drop are critical by the use of a... [See More]
- Media: Hydraulic; Air; Water; Hot Water; Cold Water ; Ground Water; Potable Water; Salt Water (optional feature); Gas; Gasoline / Diesel Fuel (optional feature); High Purity (optional feature); LP Gas (optional feature); Natural Gas (optional feature); Sour Gas (optional feature); Specialty Corrosive (optional feature); Steam; Liquids
- Maximum Pressure: 3000.00
- Valve Size: 0.50
- Connection Description: Threaded; Face Seal (optional feature); 3/8 NPT
from Armstrong International
The GD-200/200H valves offer high capacity and highly accurate control, with a large, cupped diaphragm for a long stroke. Compact and rugged, the GD-200 ’s composition valve and bronze metal seat mean high performance over a longer service life. Well suited to non-viscous liquid pressure... [See More]
- Media: Air; Compressed Air; Water; Hot Water; Cold Water
- Maximum Pressure: 150.00
- Valve Size: 2.00 to 6.00
- Controlled Pressure Range: 7.00 to 100.00
from SC Hydraulic Engineering Corporation
SC Pressure Release Valves are available in normally open and normally closed configurations. All of the valves are air actuated and are compatible with most fluids including water and synthetic compounds. Seals are Buna-N as standard (-N). Substitute "-V" for Viton® seals or "-E" for EPR.Typically,... [See More]
- Media: Hydraulic; Water; Hot Water; Cold Water
- Maximum Pressure: 5000.00
- Valve Size: 0.25
- Controlled Pressure Range: 5000.00
from General Pump
Check Valve, Stainless Steel. Features. Light Cracking Pressure. Stainless Body with Stainless Wetted Parts. O-ring on Poppet for a Leak Proof Seal. Solid Body Construction, Won ’t Come Apart During Installation [See More]
- Media: Water; Hot Water; Cold Water
- Maximum Pressure: 6500.00
- Valve Size: 0.25 to 0.75
- Controlled Pressure Range: 6500.00
from Chemac Inc./Uraca/Uhde HPT/Gather/BHDT
Pneumatically Actuated Pressure Maintaining Valve. Holds the discharge pressure constant, independent of the counter pressure. Recommended for multi-consumer operation. No pressure loss in case of switching. to additional consumers thus increasing. § Safety of the service personnel. §... [See More]
- Media: Air; Water; Gas
from Equilibar, LLC.
Precision Back Pressure Regulator. For gas & mixed phase processes. Rugged Bar Stock Design. Available in ¼ inch through 1 inch sizes. SS316 standard with Hastelloy C optional. Diaphragms available in PTFE, Hastelloy, SS316, and polyimide. The GS series is specifically designed for a... [See More]
- Media: Hydraulic; Air; Breathable; Compressed Air; Water; Hot Water; Cold Water ; Ground Water; Potable Water; Salt Water; Wastewater; Gas; Gasoline / Diesel Fuel; High Purity; LP Gas; Natural Gas; Sour Gas; Specialty Corrosive; Powder Solids (optional feature); Steam
- Maximum Pressure: 0.00 to 2500.00
- Valve Size: 0.12 to 1.00
- Controlled Pressure Range: 0.00 to 2500.00
from FITOK GmbH
Founded in 1998, FITOK Group has been an industry-leading developer and manufacturer of superior quality instrumentation valves and fittings, having our R &D centers, manufacturing facilities, warehousing and service locations in Offenbach Germany, Texas USA, Shenzhen China and Dubai UAE. We... [See More]
- Media: Air; Compressed Air; Water
- Maximum Pressure: 6000.00
- Valve Size: 0.14 to 0.25
- Controlled Pressure Range: 10.00 to 6000.00
from FUJIKURA COMPOSITES Inc.
Features. High pressure range.(Max setting pressure: 4.2Mpa [609.16psi]). Connecting outlet port is the best to recover exhaust gas/liquid. Cracking pressure ’s setting is done before delivering. Applications. Machine Tools ：Milling machine, NC lathe, laser processing machine etc. [See More]
- Media: Air; Water
- Maximum Pressure: 986.25
- Valve Size: 0.12 to 0.25
- Connection Description: Threaded
from Cat Pumps - High Pressure Pumps & Systems
A Relief Valve, or Pop-Off Valve, is a secondary pressure regulating device used to back up the primary regulating device. If the primary regulating device fails to by-pass at a set system pressure, the relief valve will open and allow liquid to flow freely. A relief valve can save costly pump and... [See More]
- Media: Water
- Maximum Pressure: 100.00 to 2600.00
- Valve Size: 0.75
- Connection Description: Threaded
from Suttner America Company
Adjustable pressure. Forged brass housing, stainless steel ball and valve seat. Special seals for maximum heat and chemical resistance.. Valve member rides on elastomeric cushion, eliminating metal to metal contact, a common cause of regulator failure.. Quickly rebuildable with repair kit. Can be... [See More]
- Media: Water
- Maximum Pressure: 3600.00
- Valve Size: 0.25
- Connection Description: Threaded
from Spirax-Sarco
The DEP4 is a cast steel direct acting bellows sealed excess pressure valve. The standard version as an EPDM diaphragm (limited to 125 ° C) and is suitable for steam and water applications. Also available for oil applications is a Nitrile rubber diaphragm (suffix 'N ' i.e. DEP4B1N which is... [See More]
- Media: Water; Steam
- Connection Description: BoltFlange; DN15, DN20, DN25, DN32, DN40, DN50, DN65, DN80 and DN100
- Maximum Pressure: 4.35 to 217.56
- Primary Material: Steel; Cast Steel
from Watts
Series 340, 340X Automatic Reseating Temperature and Pressure Relief Valves are used in commercial water heater applications to provide automatic temperature and pressure protection to hot water supply tanks and hot water heaters. They feature a bronze body with NPT male inlet and NPT female outlet... [See More]
- Media: Water
- Valve Size: 1.50
from co-ax valves inc.
Function: pressure balanced pressure limitation valve, externally controlled or direct acting. Media: gaseous, liquid, highly viscous, contaminated. Body Materials: brass, aluminum, stainless steel, galvanized steel. Options: SAE connection, safety valve, mounting, special voltage, coil M 12 x 1,... [See More]
- Media: Hydraulic; Air; Breathable; Compressed Air; Water; Hot Water; Cold Water ; Ground Water; Potable Water; Salt Water; Wastewater; High Purity (optional feature); Specialty Corrosive (optional feature); Steam (optional feature)
- Maximum Pressure: 72.52 to 1740.45
- Valve Size: 1.26
- Controlled Pressure Range: 72.52 to 1740.45
from Qosina Corp.
Qosina is a leading supplier of T Pressure Relief Valve with 0.25 inch OD x 0.281 inch OD x 0.25 inch OD, 2.5 psi, +/- 20% Crack Tolerance. Get fast shipping and volume discounts on Relief Valves parts. [See More]
- Media: Air; Water
- Primary Material: Stainless Steel; PP; PC, PP, Silicone, SS
- Maximum Pressure: 2.50
from CEME
CEME has always been a reference point for the ironing and steam cleaning world. The most important brands in this sector rely on CEME for electro valves, pumps, pressure gauges and safety valves, so as to guarantee the utmost efficiency and quality for their products. . Temperature and... [See More]
- Media: Air; Water; Steam
from Zurn Industries LLC
The Zurn Wilkins P1520XL Pressure Relief Valve installs on cold water service lines to protect against excessive pressure buildup. These devices are for pressure only and should be used in conjunction with other temperature limiting devices. To view all options, see the Specification Sheet. Features... [See More]
- Media: Water
from Check-All Valve Mfg. Co.
The Connector Valve is a check valve with a hex nipple or connector housing. It is designed to be used in installations where check valves with male pipe threads are required. The Connector Valve is adaptable for use as a check valve, vacuum breaker, or low pressure relief valve. Two valves used in... [See More]
- Media: Air; Water; Hot Water; Cold Water ; Ground Water; Potable Water; Salt Water (optional feature); Gas; Gasoline / Diesel Fuel (optional feature); High Purity (optional feature); LP Gas (optional feature); Natural Gas (optional feature); Sour Gas (optional feature); Specialty Corrosive (optional feature); Steam; Liquids
- Maximum Pressure: 3000.00
- Valve Size: 0.50
- Connection Description: Threaded; Face Seal (optional feature); 1/2 NPT
from Armstrong International
The GD-20 offers high capacity and highly accurate control with a large, cupped diaphragm for a long stroke. Compact and rugged, the GD-20's composition valve and bronze seat mean high performance over a long service life. [See More]
- Media: Water
from SC Hydraulic Engineering Corporation
The DRV series adjustable hydraulic relief valves are available in five pressure ranges between 100 psig and 60,000 psig. Constructed of Stainless steel the valves can be used for most industrial fluids including water. The valve once set will not allow system pressure to exceed design limitations. [See More]
- Media: Hydraulic; Water; Hot Water; Cold Water ; Gas
- Maximum Pressure: 1000.00
- Valve Size: 0.25
- Controlled Pressure Range: 100.00 to 1000.00
from General Pump
Unloader with 2.2 mm Injector, optional banjo fittings. Reduces cost - eliminates the need for fittings and bypass hose. Compact design - features forged brass body and hardware. Versatile - mounts in seconds to either side of pump manifold. Adjustable unloader valve - trapped pressure type with... [See More]
- Media: Water; Hot Water; Cold Water
- Maximum Pressure: 3000.00
- Valve Size: 0.38 to 0.50
- Controlled Pressure Range: 3000.00
from Chemac Inc./Uraca/Uhde HPT/Gather/BHDT
Pneumatically High Pressure Switching Valve. ß Mode of operation: Main valve is closed by pneumatically short sotroke cylinder against pressure spring. ß Switchable against pressure. ß Multistage possible. ß Switching positions: Without enery closed (Standard) or without... [See More]
- Media: Air; Water; Gas
from Equilibar, LLC.
Equilibar's Research Series back pressure regulator offer precision performance for high pressure applications up to 5000 psig. These regulators provide stable inlet pressure across widely varying flow rates, for liquid, gas, and mixed phase fluids. We can provide diaphragms of Stainless Steel 316,... [See More]
- Media: Hydraulic; Air; Breathable; Compressed Air; Water; Hot Water; Cold Water ; Ground Water; Potable Water; Salt Water; Wastewater; Gas; Gasoline / Diesel Fuel; High Purity; LP Gas; Natural Gas; Sour Gas; Specialty Corrosive; Powder Solids (optional feature); Steam
- Maximum Pressure: 0.00 to 10000.00
- Valve Size: 0.12
- Controlled Pressure Range: 0.00 to 10000.00
from FUJIKURA COMPOSITES Inc.
Features. High precision cracking performance, high sealability. Small and light design is ideal for fluid that exhaust to outside. Various port sizes. Cracking pressure ’s setting is done before delivering. Applications. Machine Tools ：Milling machine, NC lathe, laser processing... [See More]
- Media: Air; Water
- Maximum Pressure: 234.96
- Valve Size: 0.12 to 1.00
- Connection Description: Threaded
from Cat Pumps - High Pressure Pumps & Systems
A Relief Valve, or Pop-Off Valve, is a secondary pressure regulating device used to back up the primary regulating device. If the primary regulating device fails to by-pass at a set system pressure, the relief valve will open and allow liquid to flow freely. A relief valve can save costly pump and... [See More]
- Media: Water
- Maximum Pressure: 300.00 to 1500.00
- Valve Size: 0.37
- Connection Description: Threaded
from Spirax-Sarco
The DEP7 is an SG iron direct acting bellows sealed excess pressure valve. The standard version has an EPDM diaphragm limited to 125 ° C and is suitable for steam and water applications. Also available for oil applications is a Nitrile rubber diaphragm (suffix 'N ' i.e. DEP7B1N which is limited... [See More]
- Media: Water; Steam
- Maximum Pressure: 145.04 to 232.06
- Valve Size: 0.50 to 2.00
- Connection Description: Threaded (optional feature); BoltFlange (optional feature); 1/2", 3/4", 1", 1¼", 1½" and 2" Screwed BSP or NPT, DN15, DN20, DN25, DN32, DN40, DN50, DN65, DN80 and DN100 Flanged
from Watts
Series 40L, 40XL Automatic Reseating Temperature and Pressure Relief Valves are used in commercial water heater applications to provide automatic temperature and pressure protection to hot water supply tanks and hot water heaters. They feature a bronze body with NPT male inlet and NPT female outlet... [See More]
- Media: Water
- Valve Size: 0.75 to 1.00
from co-ax valves inc.
Function: pressure balanced pressure limitation valve, externally controlled or direct acting. Media: gaseous, liquid, highly viscous, contaminated. Body Materials: brass, aluminum, stainless steel, galvanized steel. Options: SAE connection, safety valve, mounting, special voltage, coil M 12 x 1,... [See More]
- Media: Hydraulic; Air; Breathable; Compressed Air; Water; Hot Water; Cold Water ; Ground Water; Potable Water; Salt Water; Wastewater; High Purity (optional feature); Specialty Corrosive (optional feature); Steam (optional feature)
- Maximum Pressure: 14.50 to 232.06
- Valve Size: 1.26
- Controlled Pressure Range: 14.50 to 232.06
from Qosina Corp.
Qosina is a leading supplier of T Pressure Relief Valve with 0.25 inch OD x 0.281 inch OD x 0.25 inch OD, 8 psi, +/- 25% Crack Tolerance. Get fast shipping and volume discounts on Relief Valves parts. [See More]
- Media: Air; Water
- Primary Material: Stainless Steel; PP; PC, PP, Silicone, SS
- Maximum Pressure: 8.45
from CEME
CEME has always been a reference point for the ironing and steam cleaning world. The most important brands in this sector rely on CEME for electro valves, pumps, pressure gauges and safety valves, so as to guarantee the utmost efficiency and quality for their products. . Temperature and... [See More]
- Media: Air; Water; Steam
from Zurn Industries LLC
The Zurn Wilkins P4000A Pressure Relief Valve prevents pressure buildup in a fire protection system or other closed type system whenever the line pressure exceeds the setting of the spring caused by pumps, elevated piping and thermal expansion. To view all options, see the Specification Sheet. [See More]
- Media: Water
from Check-All Valve Mfg. Co.
The CAV series of valves are not catalog items but rather are custom designed and tailored to meet customer specific connections or valve configurations. If you have a check valve application where our standard catalog items do not quite match what you are looking for, contact our sales department... [See More]
- Media: Hydraulic; Air; Water; Hot Water; Cold Water ; Ground Water; Potable Water; Salt Water (optional feature); Gas; Gasoline / Diesel Fuel (optional feature); High Purity (optional feature); LP Gas (optional feature); Natural Gas (optional feature); Sour Gas (optional feature); Specialty Corrosive (optional feature); Steam; Liquids
- Primary Material: Aluminum; Brass / Bronze; Stainless Steel (optional feature); Steel (optional feature); Exotic Metal; Titanium, Monel
- Connection Description: Threaded (optional feature); Compression (optional feature); BoltFlange (optional feature); Clamp Flange (optional feature); Union (optional feature); Tube Fitting (optional feature); Butt Weld (optional feature); Socket Weld (optional feature); Face Seal (optional feature)
- Actuation: Pressure
from Armstrong International
An industrial-grade valve for water systems, the GD-24 is lightweight, compact and economical. The valve comes with screwed connections and will mount in any position. It requires no external sensing lines, and its bronze body and high-temperature diaphragm are suitable for hot or cold water... [See More]
- Media: Water; Hot Water; Cold Water
- Maximum Pressure: 230.00
- Valve Size: 0.50 to 2.00
- Controlled Pressure Range: 7.00 to 80.00
from General Pump
Direct Mount Unloader with or without 2 mm Injector. Reduces cost - eliminates the need for fittings and bypass hose. Compact design - features forged brass body and hardware. Versatile - mounts in seconds to either side of pump manifold. Adjustable unloader valve - trapped pressure type with... [See More]
- Media: Water; Hot Water; Cold Water
- Maximum Pressure: 1600.00
- Valve Size: 0.38
- Controlled Pressure Range: 1600.00
from Equilibar, LLC.
New Beta HT Series Extends Temperature to 450C. Equilibar has just made its HT Series back pressure regulators available for beta release to select customers. These regulators utilize a graphite seal for temperatures to 450C and pressures to 5000 psig. The Grafoil GTA seal is nuclear grade purity... [See More]
- Media: Hydraulic; Air; Breathable; Compressed Air; Water; Hot Water; Cold Water ; Ground Water; Potable Water; Salt Water; Wastewater; Gas; Gasoline / Diesel Fuel; High Purity; LP Gas; Natural Gas; Sour Gas; Specialty Corrosive; Powder Solids (optional feature); Steam
- Maximum Pressure: 0.00 to 5000.00
- Valve Size: 0.12
- Controlled Pressure Range: 0.00 to 5000.00
from FUJIKURA COMPOSITES Inc.
Features. High precision cracking performance, high sealability. Deflector cap controls direction of blow-out when it reliefs. In exposure use environment , FRC reduce the invasion of foreign substance into valve . Cracking pressure ’s setting is done before delivering. Applications. Machine... [See More]
- Media: Air; Water
- Maximum Pressure: 234.96
- Valve Size: 0.12 to 0.75
- Connection Description: Threaded
from Cat Pumps - High Pressure Pumps & Systems
A Relief Valve, or Pop-Off Valve, is a secondary pressure regulating device used to back up the primary regulating device. If the primary regulating device fails to by-pass at a set system pressure, the relief valve will open and allow liquid to flow freely. A relief valve can save costly pump and... [See More]
- Media: Water
- Maximum Pressure: 3000.00 to 5700.00
- Valve Size: 0.50
- Connection Description: Threaded
from Watts
Series N240X, N241X Automatic Reseating Temperature and Pressure Relief Valves are used in commercial water heater applications to provide automatic temperature and pressure protection to domestic hot water supply tanks and hot water heaters. They feature a bronze body, stainless steel spring and... [See More]
- Media: Water
- Valve Size: 1.00 to 1.25
from co-ax valves inc.
Function: pressure balanced pressure limitation valve, externally controlled or direct acting. Media: gaseous, liquid, highly viscous, contaminated. Body Materials: brass, aluminum, stainless steel, galvanized steel. Options: SAE connection, safety valve, mounting, special voltage, coil M 12 x 1,... [See More]
- Media: Hydraulic; Air; Breathable; Compressed Air; Water; Hot Water; Cold Water ; Ground Water; Potable Water; Salt Water; Wastewater; High Purity (optional feature); Specialty Corrosive (optional feature); Steam (optional feature)
- Maximum Pressure: 72.52 to 928.24
- Valve Size: 0.59
- Controlled Pressure Range: 72.52 to 928.24
from Qosina Corp.
Qosina is a leading supplier of T Pressure Relief Valve with 0.250 inch OD x 0.281 inch OD x 0.250 inch OD, 30 psi, +/- 10% Crack Tolerance. Get fast shipping and volume discounts on Relief Valves parts. [See More]
- Media: Air; Water
- Primary Material: Stainless Steel; PP; PC, PP, Silicone, SS
- Maximum Pressure: 30.00
from CEME
CEME has always been a reference point for the ironing and steam cleaning world. The most important brands in this sector rely on CEME for electro valves, pumps, pressure gauges and safety valves, so as to guarantee the utmost efficiency and quality for their products. . Temperature and... [See More]
- Media: Air; Water; Steam
from Zurn Industries LLC
The Zurn Wilkins P1000A Pressure Relief Valve prevents over-pressure of storage tanks, and is available in a variety of pressure relief settings for installation versatility. To view all options, see the Specification Sheet. Features And Benefits. Pressure Relief Valve set at 125 psi. Prevents... [See More]
- Media: Water
from Check-All Valve Mfg. Co.
Flange Insert valves are the ultimate check valves in flanged systems. They provide the simplest most economical way to install check valves in a piping system, the valve body automatically positions the valve and holds it in place while bolts are being installed and tightened. All that is required... [See More]
- Media: Hydraulic; Air; Water; Hot Water; Cold Water ; Ground Water; Potable Water; Salt Water (optional feature); Gas; Gasoline / Diesel Fuel (optional feature); High Purity (optional feature); LP Gas (optional feature); Natural Gas (optional feature); Sour Gas (optional feature); Specialty Corrosive (optional feature); Steam; Liquids
- Connection Description: BoltFlange; Face Seal (optional feature); 1-3/8" O.D. Flange
- Valve Size: 0.50
- Primary Material: Aluminum (optional feature); Brass / Bronze; Stainless Steel; Steel; Exotic Metal; PVC; PTFE; FEP Encapsulator
from Armstrong International
The GD-6N and GD-6 are compact, direct-acting diaphragm valves ideal for low-flow applications, including laundry/dry-cleaning equipment, hospital equipment, tire/plastic molds and food processing. Lightweight and compact, the valves require no external sensing lines or additional parts. An external... [See More]
- Media: Air; Water; Gas
- Maximum Pressure: 150.00
- Valve Size: 0.38 to 1.00
- Controlled Pressure Range: 3.00 to 60.00
from General Pump
Direct Mount, Control Set Unloader For TT/TP Series 51 Pumps. General Pump, along with our parent company, Interpump Group S.r.l., has been the world leader in plunger pump development since 1982. While known as the leader in plunger pumps for the pressure cleaning industry, we have expanded to... [See More]
- Media: Water; Hot Water; Cold Water
- Maximum Pressure: 3200.00
- Valve Size: 0.38
- Controlled Pressure Range: 3650.00
from Equilibar, LLC.
Standard Pressure Range: 0.02 (.5 ” WC) to 1500 psig. Ultra Low to Zero flow performance. Standard Cv from 1E-11 to 0.01. Standard 316L Stainless Steel Body; Hastelloy C and PTFE also available. NPT, VCR/VCO type and Valco (low dead volume) ends available. Wide Variety of Diaphragms Including... [See More]
- Media: Hydraulic; Air; Breathable; Compressed Air; Water; Hot Water; Cold Water ; Ground Water; Potable Water; Salt Water; Wastewater; Gas; Gasoline / Diesel Fuel; High Purity; LP Gas; Natural Gas; Sour Gas; Specialty Corrosive; Powder Solids (optional feature); Steam
- Maximum Pressure: 0.00 to 3000.00
- Valve Size: 0.12
- Controlled Pressure Range: 0.00 to 3000.00
from FUJIKURA COMPOSITES Inc.
Features. High precision cracking performance, high sealability. Small and light design is ideal for fluid that exhaust to outside. Various port sizes. Cracking pressure ’s setting is done before delivering. Connecting outlet port is the best to recover exhaust gas/liquid. Applications. [See More]
- Media: Air; Water
- Maximum Pressure: 234.96
- Valve Size: 0.12 to 1.25
- Connection Description: Threaded
from Cat Pumps - High Pressure Pumps & Systems
A Relief Valve, or Pop-Off Valve, is a secondary pressure regulating device used to back up the primary regulating device. If the primary regulating device fails to by-pass at a set system pressure, the relief valve will open and allow liquid to flow freely. A relief valve can save costly pump and... [See More]
- Media: Water
- Maximum Pressure: 400.00 to 5000.00
- Valve Size: 0.37
- Connection Description: Threaded
from Watts
Series 174A Boiler Pressure Relief Valves are used in hot water heating and domestic supply boiler applications to protect against excessive pressures on all types of hot water heating supply boiler equipment. It consists of a bronze body construction with NPT threaded female inlet and NPT threaded... [See More]
- Media: Water
- Valve Size: 0.75 to 2.00
from co-ax valves inc.
Function: pressure balanced pressure limitation valve, externally controlled or direct acting. Media: gaseous, liquid, highly viscous, contaminated. Body Materials: brass, aluminum, stainless steel, galvanized steel. Options: SAE connection, safety valve, mounting, special voltage, coil M 12 x 1,... [See More]
- Media: Hydraulic; Air; Breathable; Compressed Air; Water; Hot Water; Cold Water ; Ground Water; Potable Water; Salt Water; Wastewater; High Purity (optional feature); Specialty Corrosive (optional feature); Steam (optional feature)
- Maximum Pressure: 72.52 to 928.24
- Valve Size: 1.26
- Controlled Pressure Range: 72.52 to 928.24
from Qosina Corp.
Order T pressure relief valves at Qosina and get only what you need with our low $25-order minimum. Features a 9-12 psi tolerance. [See More]
- Media: Air; Water
- Primary Material: Stainless Steel; PP; PC, PP, Silicone, SS
- Maximum Pressure: 9.00 to 12.00
from CEME
CEME has always been a reference point for the ironing and steam cleaning world. The most important brands in this sector rely on CEME for electro valves, pumps, pressure gauges and safety valves, so as to guarantee the utmost efficiency and quality for their products. . Temperature and... [See More]
- Media: Air; Water; Steam
from Zurn Industries LLC
The 500XL3 Pressure Reducing Valve works effectively for industrial water lines and commercial systems, with high-flow rate capacity and low falloff. The patented integral venturi enables the valve to have best in-class flow performance. The all-bronze body, stainless-steel stem and cartridge... [See More]
- Media: Water; Potable Water
- Maximum Pressure: 400.00
- Valve Size: 1.00
- Controlled Pressure Range: 25.00 to 75.00
from Check-All Valve Mfg. Co.
The Check-All Flanged & Drilled check valve is a one-piece cast body valve with ANSI/ASME B16.5 Class 150 flanged ends. The HVFD series valve is used when higher flow rates and lower pressure drops are required. The valve is available in sizes 1 through 10 inches and standard materials of 316... [See More]
- Media: Hydraulic; Air; Water; Hot Water; Cold Water ; Ground Water; Potable Water; Salt Water (optional feature); Gas; Gasoline / Diesel Fuel (optional feature); High Purity (optional feature); LP Gas (optional feature); Natural Gas (optional feature); Sour Gas (optional feature); Specialty Corrosive (optional feature); Steam; Liquids
- Connection Description: BoltFlange; Face Seal (optional feature); 4-1/4" O.D. Flange
- Valve Size: 1.00
- Primary Material: Brass / Bronze; Stainless Steel; Steel
from General Pump
Direct Mount, Control Set Unloader for Use With EZ, 47, 60 and 63 Series Pumps, Optional 1.8 MM Injector. Features. Direct-mount, control set unloader. Used with 44, 47, 50, 60, 63 series pumps. Built-in bypass. Sturdy steel and brass construction. Adjustable locknut to control the maximum pressure. [See More]
- Media: Water; Hot Water; Cold Water
- Maximum Pressure: 3200.00
- Valve Size: 0.38 to 0.50
- Controlled Pressure Range: 3650.00
from Equilibar, LLC.
Precision Back Pressure Regulator. For liquid, gas & mixed phase processes. SS316 Rugged Bar Stock Design. Unique Chatter Suppression Feature in liquid only applications. High Precision and sensitivity. PTFE, stainless steel, and Hastelloy diaphragms available. The NL series back pressure... [See More]
- Media: Hydraulic; Air; Breathable; Compressed Air; Water; Hot Water; Cold Water ; Ground Water; Potable Water; Salt Water; Wastewater; Gas; Gasoline / Diesel Fuel; High Purity; LP Gas; Natural Gas; Sour Gas; Specialty Corrosive; Powder Solids (optional feature); Steam
- Maximum Pressure: 0.00 to 500.00
- Valve Size: 1.00 to 4.00
- Controlled Pressure Range: 0.00 to 500.00
from FUJIKURA COMPOSITES Inc.
Features. Special packing rubber inhibits valve ’s vibration. Setting of cracking pressure is controllable. (Pressure setting is done before shipping). Body material is stainless (SUS314), excellent corrosion resistance. Liquid available, In-line type, High flow model. Applications. Machine... [See More]
- Media: Air; Water
- Maximum Pressure: 435.11
- Valve Size: 0.25
- Connection Description: Threaded
from Cat Pumps - High Pressure Pumps & Systems
A Relief Valve, or Pop-Off Valve, is a secondary pressure regulating device used to back up the primary regulating device. If the primary regulating device fails to by-pass at a set system pressure, the relief valve will open and allow liquid to flow freely. A relief valve can save costly pump and... [See More]
- Media: Water
- Maximum Pressure: 100.00 to 7250.00
- Valve Size: 0.50
- Connection Description: Threaded
from Watts
Series 374A Boiler Pressure Relief Valves are used in hot water boiler applications to protect against excessive pressure on all types of hot water heating boiler equipment. It consists of an iron body construction with forged bronze inlet connections, non-metallic disc-to-metal seating, stainless... [See More]
- Media: Water
- Valve Size: 0.75
from co-ax valves inc.
Function: pressure balanced pressure limitation valve, externally controlled or direct acting. Media: gaseous, liquid, highly viscous, contaminated. Body Materials: brass, aluminum, stainless steel, galvanized steel. Options: SAE connection, safety valve, mounting, special voltage, coil M 12 x 1,... [See More]
- Media: Hydraulic; Air; Breathable; Compressed Air; Water; Hot Water; Cold Water ; Ground Water; Potable Water; Salt Water; Wastewater; High Purity (optional feature); Specialty Corrosive (optional feature); Steam (optional feature)
- Maximum Pressure: 145.04 to 2900.75
- Valve Size: 0.31
- Controlled Pressure Range: 145.04 to 2900.75
from Qosina Corp.
Get automatic relief when pressures rise too high by ordering and installing an 80194 T pressure relief valve from Qosina. The valve has an 18-psi tolerance. [See More]
- Media: Air; Water
- Primary Material: Stainless Steel; PP; PC, PP, Silicone, SS
- Maximum Pressure: 18.00
from CEME
CEME has always been a reference point for the ironing and steam cleaning world. The most important brands in this sector rely on CEME for electro valves, pumps, pressure gauges and safety valves, so as to guarantee the utmost efficiency and quality for their products. . Temperature and... [See More]
- Media: Air; Water; Steam
from Zurn Industries LLC
The 500XL3 Pressure Reducing Valve works effectively for industrial water lines and commercial systems, with high-flow rate capacity and low falloff. The patented integral venturi enables the valve to have best in-class flow performance. The all-bronze body, stainless-steel stem and cartridge... [See More]
- Media: Water; Potable Water
- Maximum Pressure: 400.00
- Valve Size: 1.50
- Controlled Pressure Range: 25.00 to 75.00
from Check-All Valve Mfg. Co.
The Check-All Flanged & Drilled - PTFE Lined check valve is a one-piece body valve with ANSI/ASME flanged ends. The valve has a solid one-piece PTFE liner, which covers the flange faces out to the raised face diameter. All wetted surfaces are fluoropolymer (PTFE/FEP/PFA) including the FEP... [See More]
- Media: Hydraulic; Air; Water; Hot Water; Cold Water ; Ground Water; Potable Water; Salt Water (optional feature); Gas; Gasoline / Diesel Fuel (optional feature); High Purity (optional feature); LP Gas (optional feature); Natural Gas (optional feature); Sour Gas (optional feature); Specialty Corrosive (optional feature); Steam; Liquids
- Maximum Pressure: 55.00
- Valve Size: 1.00
- Connection Description: BoltFlange; Face Seal (optional feature); 4-1/4" O.D. Flange
from General Pump
Direct Mount Control Set Unloader For EZ 47, 60 and 63 Series Pumps, optional 2.1mm injector. Features. Direct-mount for EZ 47, 60 and 63 series pumps. Sturdy steel and brass construction. Adjustable locknut to control the maximum pressure. Easy maintenance. Plastic cap with anti-removal system. [See More]
- Media: Water; Hot Water; Cold Water
- Maximum Pressure: 3200.00
- Valve Size: 0.38 to 0.50
- Controlled Pressure Range: 3650.00
from FUJIKURA COMPOSITES Inc.
Features. Designed to reduce risk of outside-leak better than FRM1. As seal material. EPDM, kalrez are available in chemical, solvent and corrosive fluid. Setting of cracking pressure is controllable. (Pressure setting is done before shipping). High flow rate model. Applications. Machine Tools... [See More]
- Media: Air; Water
- Maximum Pressure: 290.07
- Valve Size: 0.25
- Connection Description: Threaded
from Cat Pumps - High Pressure Pumps & Systems
A Relief Valve, or Pop-Off Valve, is a secondary pressure regulating device used to back up the primary regulating device. If the primary regulating device fails to by-pass at a set system pressure, the relief valve will open and allow liquid to flow freely. A relief valve can save costly pump and... [See More]
- Media: Water
- Maximum Pressure: 400.00 to 2200.00
- Valve Size: 0.50
- Connection Description: Threaded
from Watts
Series 740 Boiler Pressure Relief Valves are used in hot water space heating boiler applications to protect against excessive pressure on all types of hot water space heating boiler equipment. It consists of a iron body construction with expanded outlet drain connections for hot water space heating... [See More]
- Media: Water
- Valve Size: 0.75 to 2.00
from co-ax valves inc.
Function: pressure balanced pressure limitation valve, externally controlled or direct acting. Media: gaseous, liquid, highly viscous, contaminated. Body Materials: brass, aluminum, stainless steel, galvanized steel. Options: SAE connection, safety valve, mounting, special voltage, coil M 12 x 1,... [See More]
- Media: Hydraulic; Air; Breathable; Compressed Air; Water; Hot Water; Cold Water ; Ground Water; Potable Water; Salt Water; Wastewater; High Purity (optional feature); Specialty Corrosive (optional feature); Steam (optional feature)
- Maximum Pressure: 72.52 to 928.24
- Valve Size: 2.56
- Controlled Pressure Range: 72.52 to 928.24
from Qosina Corp.
T Pressure Relief Valve [See More]
- Media: Air; Water
- Primary Material: Stainless Steel; PP; PC, PP, Silicone, SS
- Maximum Pressure: 15.00
from CEME
CEME has always been a reference point for the ironing and steam cleaning world. The most important brands in this sector rely on CEME for electro valves, pumps, pressure gauges and safety valves, so as to guarantee the utmost efficiency and quality for their products. . Temperature and... [See More]
- Media: Air; Water; Steam
from Zurn Industries LLC
The 500XL3 Pressure Reducing Valve works effectively for industrial water lines and commercial systems, with high-flow rate capacity and low falloff. The patented integral venturi enables the valve to have best in-class flow performance. The all-bronze body, stainless-steel stem and cartridge... [See More]
- Media: Water; Potable Water
- Maximum Pressure: 400.00
- Valve Size: 1.25
- Controlled Pressure Range: 25.00 to 75.00
from Check-All Valve Mfg. Co.
The Lined Pipe Insert valve is designed to mate between two flanges on most lined pipe systems. It provides the simplest most economical way to install a check valve in a lined piping system. No gaskets are required, just spread the flanges, center the valve and bolt the flanges together. Lined Pipe... [See More]
- Media: Hydraulic; Air; Water; Hot Water; Cold Water ; Ground Water; Potable Water; Salt Water (optional feature); Gas; Gasoline / Diesel Fuel (optional feature); High Purity (optional feature); LP Gas (optional feature); Natural Gas (optional feature); Sour Gas (optional feature); Specialty Corrosive (optional feature); Steam; Liquids
- Maximum Pressure: 55.00
- Valve Size: 1.00
- Connection Description: BoltFlange; Face Seal (optional feature); 2" O.D. Flange
from General Pump
Direct Mount, Control Set Unloader, Available With or Without Injector. General Pump, along with our parent company, Interpump Group S.r.l., has been the world leader in plunger pump development since 1982. While known as the leader in plunger pumps for the pressure cleaning industry, we have... [See More]
- Media: Water; Hot Water; Cold Water
- Maximum Pressure: 3000.00
- Valve Size: 0.38 to 0.50
- Controlled Pressure Range: 3000.00
from Cat Pumps - High Pressure Pumps & Systems
A Relief Valve, or Pop-Off Valve, is a secondary pressure regulating device used to back up the primary regulating device. If the primary regulating device fails to by-pass at a set system pressure, the relief valve will open and allow liquid to flow freely. A relief valve can save costly pump and... [See More]
- Media: Water
- Maximum Pressure: 800.00 to 4000.00
- Valve Size: 0.50
- Connection Description: Threaded
from Watts
Series 5300A By-Pass Control Relief Valves are used in commercial, residential and industrial applications to regulate liquid pressure as supplied by a positive pressure pump. It is a poppet-type compact valve that protects equipment by opening at the desired setting to allow excess volume to be... [See More]
- Media: Water
- Valve Size: 0.50
from co-ax valves inc.
Function: pressure balanced pressure limitation valve, externally controlled or direct acting. Media: gaseous, liquid, highly viscous, contaminated. Body Materials: brass, aluminum, stainless steel, galvanized steel. Options: SAE connection, safety valve, mounting, special voltage, coil M 12 x 1,... [See More]
- Media: Hydraulic; Air; Breathable; Compressed Air; Water; Hot Water; Cold Water ; Ground Water; Potable Water; Salt Water; Wastewater; High Purity (optional feature); Specialty Corrosive (optional feature); Steam (optional feature)
- Maximum Pressure: 72.52 to 928.24
- Valve Size: 1.97
- Controlled Pressure Range: 72.52 to 928.24
from Qosina Corp.
T Pressure Relief Valve [See More]
- Media: Air; Water
- Primary Material: Stainless Steel; PP; PC, PP, Silicone, SS
- Maximum Pressure: 58.00
from CEME
CEME has always been a reference point for the ironing and steam cleaning world. The most important brands in this sector rely on CEME for electro valves, pumps, pressure gauges and safety valves, so as to guarantee the utmost efficiency and quality for their products. . Temperature and... [See More]
- Media: Air; Water; Steam
from Zurn Industries LLC
The 500XL3 Pressure Reducing Valve works effectively for industrial water lines and commercial systems, with high-flow rate capacity and low falloff. The patented integral venturi enables the valve to have best in-class flow performance. The all-bronze body, stainless-steel stem and cartridge... [See More]
- Media: Water; Potable Water
- Maximum Pressure: 400.00
- Valve Size: 2.00
- Controlled Pressure Range: 25.00 to 75.00
from Check-All Valve Mfg. Co.
The Check-All Mini-Check is a three piece constructed check valve. The valve is designed for minimum pressure drops. The three piece construction permits many combinations of end fittings, which makes the valve adaptable for nearly every application. The Mini-Check is available with 1/8, 1/4, and... [See More]
- Media: Hydraulic; Air; Water; Hot Water; Cold Water ; Ground Water; Potable Water; Salt Water (optional feature); Gas; Gasoline / Diesel Fuel (optional feature); High Purity (optional feature); LP Gas (optional feature); Natural Gas (optional feature); Sour Gas (optional feature); Specialty Corrosive (optional feature); Steam; Liquids
- Maximum Pressure: 5000.00
- Valve Size: 0.12
- Connection Description: Threaded (optional feature); Compression (optional feature); Tube Fitting; Face Seal (optional feature); 1/8 Pipe Size
from General Pump
Easy Start Valve, Provides Easy Start for Manual Start Gas Engines. Features. Maximum working pressure = 5,000 psi. Eases system start-up. Especially useful for engine-driven pressure washers. Fits any brand of pump. Designed and made in the USA. Long-life construction. Improved seal design limits... [See More]
- Media: Water; Hot Water; Cold Water
- Maximum Pressure: 5000.00
- Valve Size: 0.12 to 0.50
- Controlled Pressure Range: 5000.00
from Cat Pumps - High Pressure Pumps & Systems
A Relief Valve, or Pop-Off Valve, is a secondary pressure regulating device used to back up the primary regulating device. If the primary regulating device fails to by-pass at a set system pressure, the relief valve will open and allow liquid to flow freely. A relief valve can save costly pump and... [See More]
- Media: Water
- Maximum Pressure: 400.00 to 2175.00
- Valve Size: 1.00
- Connection Description: Threaded
from Watts
Series BP30 By-Pass Control Relief Valves are used in commercial, residential and industrial applications to regulate liquid pressure as supplied by a positive pressure pump. It is a diaphragm-operated type valve that protects equipment by opening at the desired setting to allow excess volume to be... [See More]
- Media: Water
- Valve Size: 0.50
from co-ax valves inc.
Function: pressure balanced pressure limitation valve, externally controlled or direct acting. Media: gaseous, liquid, highly viscous, contaminated. Body Materials: brass, aluminum, stainless steel, galvanized steel. Options: SAE connection, safety valve, mounting, special voltage, coil M 12 x 1,... [See More]
- Media: Hydraulic; Air; Breathable; Compressed Air; Water; Hot Water; Cold Water ; Ground Water; Potable Water; Salt Water; Wastewater; Gas; Gasoline / Diesel Fuel; High Purity (optional feature); LP Gas; Natural Gas; Specialty Corrosive (optional feature); Steam (optional feature)
- Maximum Pressure: 0.00 to 600.00
- Valve Size: 1.26
- Controlled Pressure Range: 0.00 to 600.00
from Qosina Corp.
Make sure pressures don ’t get too high by ordering an 80 PSI 80197 T Pressure Relief Valve from Qosina. The durable valve fits 0.25-inch OD tubing. [See More]
- Media: Air; Water
- Primary Material: Stainless Steel; PP; PC, PP, Silicone, SS
- Maximum Pressure: 80.00
from CEME
CEME has always been a reference point for the ironing and steam cleaning world. The most important brands in this sector rely on CEME for electro valves, pumps, pressure gauges and safety valves, so as to guarantee the utmost efficiency and quality for their products. . Temperature and... [See More]
- Media: Air; Water; Steam
from Zurn Industries LLC
The 500XL3 Pressure Reducing Valve works effectively for industrial water lines and commercial systems, with high-flow rate capacity and low falloff. The patented integral venturi enables the valve to have best in-class flow performance. The all-bronze body, stainless-steel stem and cartridge... [See More]
- Media: Water; Potable Water
- Maximum Pressure: 400.00
- Valve Size: 2.50
- Controlled Pressure Range: 25.00 to 75.00
from Check-All Valve Mfg. Co.
The Sanitary Cartridge Valve is a 316 stainless steel check valve for use in new or existing sanitary systems. The SCV design seals on the ID of sanitary ferrules with replaceable food grade seals (Standard is FDA EPDM). The valves fit the Alfa Laval Inc. Bevel Seat and Tri-Clamp ® fittings, the... [See More]
- Media: Air; Water; Hot Water; Cold Water ; Ground Water; Potable Water; Salt Water (optional feature); Gas; Gasoline / Diesel Fuel (optional feature); High Purity (optional feature); LP Gas (optional feature); Natural Gas (optional feature); Sour Gas (optional feature); Specialty Corrosive (optional feature); Steam; Liquids
- Maximum Pressure: 1000.00
- Valve Size: 0.75
- Connection Description: Clamp Flange (optional feature); Union (optional feature); Butt Weld; Face Seal (optional feature); 3/4" Line Size
from General Pump
Easy Start Valve. Eliminates back pressure when pulling a manual start gas engine. [See More]
- Media: Water; Hot Water; Cold Water
- Maximum Pressure: 4050.00
- Valve Size: 0.25 to 0.38
- Controlled Pressure Range: 4050.00
from Cat Pumps - High Pressure Pumps & Systems
A Relief Valve, or Pop-Off Valve, is a secondary pressure regulating device used to back up the primary regulating device. If the primary regulating device fails to by-pass at a set system pressure, the relief valve will open and allow liquid to flow freely. A relief valve can save costly pump and... [See More]
- Media: Water
- Maximum Pressure: 100.00 to 15000.00
- Valve Size: 0.37
- Connection Description: Threaded
from Watts
Series 530C Calibrated Pressure Relief Valves are used in commercial, residential and industrial applications to protect against excessive pressure in systems containing water, oil, or air. It consists of a bronze body construction with NPT threaded male inlet and NPT threaded female (drain) outlet... [See More]
- Media: Water
- Valve Size: 0.50 to 0.75
from co-ax valves inc.
Function: pressure balanced pressure limitation valve, externally controlled or direct acting. Media: gaseous, liquid, highly viscous, contaminated. Body Materials: brass, aluminum, stainless steel, galvanized steel. Options: SAE connection, safety valve, mounting, special voltage, coil M 12 x 1,... [See More]
- Media: Hydraulic; Air; Breathable; Compressed Air; Water; Hot Water; Cold Water ; Ground Water; Potable Water; Salt Water; Wastewater; Gas; Gasoline / Diesel Fuel; High Purity (optional feature); LP Gas; Natural Gas; Specialty Corrosive (optional feature); Steam (optional feature)
- Maximum Pressure: 0.00 to 600.00
- Valve Size: 0.59
- Controlled Pressure Range: 0.00 to 600.00
from Qosina Corp.
Qosina is a leading supplier of Pressure Relief T Valve with 2.5 psi +/- 15% Crack Tolerance. Get fast shipping and volume discounts on Relief Valves parts. [See More]
- Media: Air; Water
- Primary Material: Stainless Steel; PP; PP, SS
- Maximum Pressure: 2.50
from CEME
CEME has always been a reference point for the ironing and steam cleaning world. The most important brands in this sector rely on CEME for electro valves, pumps, pressure gauges and safety valves, so as to guarantee the utmost efficiency and quality for their products. . Temperature and... [See More]
- Media: Air; Water; Steam
from Zurn Industries LLC
The 500XL3 Pressure Reducing Valve works effectively for industrial water lines and commercial systems, with high-flow rate capacity and low falloff. The patented integral venturi enables the valve to have best in-class flow performance. The all-bronze body, stainless-steel stem and cartridge... [See More]
- Media: Water; Potable Water
- Maximum Pressure: 400.00
- Valve Size: 2.50
- Controlled Pressure Range: 25.00 to 75.00
from Check-All Valve Mfg. Co.
For over 35 years, the compact, fluoropolymer (PTFE/FEP/PFA), Sanitary Insert Valve has been used as the most economical solution to providing a check valve in a new or existing sanitary piping system. This valve style is designed to fit into grooved-end clamp-type fittings. Since the Sanitary... [See More]
- Media: Air; Water; Hot Water; Cold Water ; Ground Water; Potable Water; Salt Water (optional feature); Gas; Gasoline / Diesel Fuel (optional feature); High Purity (optional feature); LP Gas (optional feature); Natural Gas (optional feature); Sour Gas (optional feature); Specialty Corrosive (optional feature); Steam; Liquids
- Maximum Pressure: 55.00
- Valve Size: 0.75
- Connection Description: Clamp Flange; Butt Weld; Face Seal (optional feature); 3/4" Line Size
from General Pump
Flow Sensitive Unloader (optional 6 amp microswitch). Features. Near total zero setting of the outlet pressure at gun closure increases safety. Reduced pressure loss. Makes for easier gun operation. Extremely reliable. Easy maintenance [See More]
- Media: Water; Hot Water; Cold Water
- Maximum Pressure: 4050.00
- Valve Size: 0.50
- Controlled Pressure Range: 4050.00
from Cat Pumps - High Pressure Pumps & Systems
A Thermal Valve is used to eliminate heat build-up in a closed loop by-pass system when liquid is being returned to the pump inlet. Thermal Valves can only be installed when there is a pressurized pump inlet. During recirculation of by-pass liquid, the thermal valve will detect temperature rises in... [See More]
- Media: Water
- Connection Description: Threaded
- Maximum Pressure: 0.00 to 125.00
- Actuation: Mechanical
from Watts
Series LFBRVM1, Combination Ball Valve and Relief Valve is an easy to install two-in-one device. Designed to be used as water heater shutoff valves to provide both a means to shut off the water supply to the water heater and to provide protection against excess water pressure caused by thermal... [See More]
- Media: Water
- Valve Size: 0.75
from co-ax valves inc.
Function: pressure balanced pressure limitation valve, externally controlled or direct acting. Media: gaseous, liquid, highly viscous, contaminated. Body Materials: brass, aluminum, stainless steel, galvanized steel. Options: SAE connection, safety valve, mounting, special voltage, coil M 12 x 1,... [See More]
- Media: Hydraulic; Air; Breathable; Compressed Air; Water; Hot Water; Cold Water ; Ground Water; Potable Water; Salt Water; Wastewater; High Purity (optional feature); Specialty Corrosive (optional feature); Steam (optional feature)
- Maximum Pressure: 145.04 to 2900.75
- Valve Size: 0.31
- Controlled Pressure Range: 145.04 to 2900.75
from CEME
CEME has always been a reference point for the ironing and steam cleaning world. The most important brands in this sector rely on CEME for electro valves, pumps, pressure gauges and safety valves, so as to guarantee the utmost efficiency and quality for their products. . Temperature and... [See More]
- Media: Air; Water; Steam
from Zurn Industries LLC
The 500XL3 Pressure Reducing Valve works effectively for industrial water lines and commercial systems, with high-flow rate capacity and low falloff. The patented integral venturi enables the valve to have best in-class flow performance. The all-bronze body, stainless-steel stem and cartridge... [See More]
- Media: Water; Potable Water
- Maximum Pressure: 400.00
- Valve Size: 2.50
- Controlled Pressure Range: 25.00 to 75.00
from Check-All Valve Mfg. Co.
The 3-A Sanitary Check Valve is an all 316/316L stainless steel check valve with a standard 32 Ra or better finish, (finer available) for use in new or existing sanitary systems. The 3SC design seals on the ID of sanitary ferrules with 3-A specified materials (standard is EPDM). The valve seals... [See More]
- Media: Air; Water; Hot Water; Cold Water ; Ground Water; Potable Water; Salt Water (optional feature); Gas; Gasoline / Diesel Fuel (optional feature); High Purity (optional feature); LP Gas (optional feature); Natural Gas (optional feature); Sour Gas (optional feature); Specialty Corrosive (optional feature); Steam; Liquids
- Maximum Pressure: 1000.00
- Valve Size: 1.00
- Connection Description: Clamp Flange; 1" Line Size