Gas Pressure Relief Valves
Description
Gas pressure relief valves are self-operating devices designed to protect systems from over-pressurization. They function by regulating fluid flow to ensure that the pressure within a system does not exceed a predetermined limit. These valves are typically closed and open only when the pressure exceeds the set threshold, allowing excess gas to escape and thereby reducing the pressure to a safe level.
Working Principle
Gas pressure relief valves operate using a spring-loaded mechanism. The valve remains closed under normal conditions due to the force exerted by a spring. When the pressure within the system surpasses the preset limit, it overcomes the spring force, causing the valve to open. This opening allows the excess gas to be released, either into the atmosphere or redirected to a safe location, until the pressure drops below the set point. This mechanism is crucial for preventing equipment damage and ensuring safety in pressurized systems.
Applications
Gas pressure relief valves are widely used in various industries to safeguard equipment and processes. Specific applications include:
- Chemical Processing Plants: To prevent over-pressurization in reactors and storage tanks.
- Oil and Gas Industry: Used in pipelines and storage facilities to manage pressure surges.
- Power Generation: Protects boilers and turbines from excessive pressure build-up.
- Aerospace: Ensures safe pressure levels in fuel and hydraulic systems.
Advantages over other Process Valves
Gas pressure relief valves offer several advantages compared to other types of process valves:
- Compact Size: Their small footprint makes them suitable for installations where space is limited.
- Ease of Adjustment: The set pressure can be easily adjusted to meet specific system requirements.
- Repeatability: They provide consistent performance, opening and closing reliably at the set pressure.
Limitations
Despite their benefits, gas pressure relief valves have certain limitations:
- Limited to Specific Pressure Ranges: They must be carefully selected to match the system's pressure requirements.
- Potential for Leakage: Over time, wear and tear can lead to leakage, necessitating regular maintenance.
- Sensitivity to Corrosive Environments: In highly corrosive environments, material selection is critical to prevent valve degradation.
Considerations
When selecting and maintaining gas pressure relief valves, several factors should be considered:
- Initial Costs: The cost of the valve can vary significantly based on size, material, and design.
- Operating Expenses: Regular maintenance is required to ensure reliable operation, which can add to the overall operating costs.
- Durability: Material selection is crucial for ensuring longevity, especially in harsh environments.
- Accuracy: The valve must be accurately calibrated to open at the correct pressure to ensure system safety.
- Replacement and Maintenance Costs: Over time, components may need replacement, and the cost of parts and labor should be factored into the total cost of ownership.
from DigiKey
Pressure Switch Sub-Base Mount [See More]
- Media: Air; Water; Gas
- Connection Description: Threaded
- Maximum Pressure: 15.00 to 174.00
from Haskel International LLC
Featuring a repeatable pressure release design for pressures up to 20,000 psi (1,380 bar). [See More]
- Media: Air; Compressed Air; Gas
- Maximum Pressure: 1500.00 to 20000.00
- Valve Size: 0.75
- Connection Description: Compression
from Radwell International
DISCONTINUED BY MANUFACTURER, VALVE, NON-CODE, LIQUID RELIEF, ASME SECTION VIII, AIR/GAS AND STEAM, 1/2 INCH NPT MALE, 1 INCH NPT FEMALE, 58 PSI, 4-3300 PSIG, -20 TO 550 F. FREE 2 YEAR RADWELL WARRANTY [See More]
- Media: Gas; Steam
from Petersen Products Co.
Connection Type 1/4" QC. Description Adjustable Pressure Relief Valve 0-100 PSI. Pressure, PSI 0-100 psi (6.89 bar). Sage Subcategory Number W9360. Shipping Wt. 2 Lb (0.91 Kg). Type For Air or Nitrogen [See More]
- Media: Air; Gas
- Maximum Pressure: 0.00 to 100.00
- Valve Size: 0.25
- Connection Description: Quick Connect
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
BALANCING VALVE, PRESSURE REDUCING AND RELIEF VALVE, GASKET TYPE, CONTROL PORT: A PORT, PRESSURE ADJUSTMENT RANGE 1, 2, EXTERNAL DRAIN (03 SIZE ONLY), WITH HANDLE. FREE 2 YEAR RADWELL WARRANTY [See More]
- Media: Gas
from Petersen Products Co.
Connection Type 1/4" QC. Description Adjustable Pressure Relief Valve 0-25PSI. Pressure, PSI 0-25 psi (0-1.73 bar). Sage Subcategory Number W9360. Shipping Wt. 2 Lb (0.91 Kg). Type For Air or Nitrogen [See More]
- Media: Air; Gas
- Maximum Pressure: 0.00 to 25.00
- Valve Size: 0.25
- Connection Description: Quick Connect
from DigiKey
Negative Output Pressure Switch Sub-Base Mount [See More]
- Media: Air; Gas
- Maximum Pressure: 30.00 to 116.00
from Radwell International
SAFETY VALVE, PRESSURE RELIEF, MODEL 6010, SIDE OUTLET, 0.216 IN2 ORIFICE, 3/4 IN INLET, 1 IN OUTLET, METAL SEAL, PLAIN LEVER, AIR/GAS ASME SEC VIII/XIII, SS SPRING, 50 PSIG PRESSURE. FREE 2 YEAR RADWELL WARRANTY [See More]
- Media: Gas
from Petersen Products Co.
Connection Type 1/4" QC. Description Valve, Pressure Relief. Pressure, PSI 110 psi (7.58 bar). Sage Subcategory Number W9360. Shipping Wt. 2 Lb (0.91 Kg). Type For Air or Nitrogen [See More]
- Media: Air; Gas
- Maximum Pressure: 110.00
- Valve Size: 0.25
- Connection Description: Quick Connect
from DigiKey
LOGIC NOT Sensor, Pressure Decay Sub-Base Mount [See More]
- Media: Air; Gas
- Maximum Pressure: 30.00 to 116.00
from Radwell International
RELIEF VALVE, 9400 SERIES, GAS / CRYOGENIC SYSTEMS, 1/4 INCH MALE NPT INLET, BRASS, FLUOROSILICONE SEAT, 60 PSIG. FREE 2 YEAR RADWELL WARRANTY [See More]
- Media: Gas
- Primary Material: Brass / Bronze
from Petersen Products Co.
Comment 1 VALVE, PRESSURE RELIEF, 125 PSIG, 1/4" MALE QUICK CONNECT. Connection Type 1/4" QC. Description Valve, Pressure Relief. Pressure, PSI 125 psi(8.62 bar). Sage Subcategory Number W9360. Shipping Wt. 2 Lb (0.91 Kg). Type For Air or Nitrogen [See More]
- Media: Air; Gas
- Maximum Pressure: 125.00
- Valve Size: 0.25
- Connection Description: Quick Connect
from DigiKey
Positive Output Pressure Switch Sub-Base Mount [See More]
- Media: Air; Gas
- Maximum Pressure: 1.00 to 36.00
from Radwell International
RELIEF VALVE, MALE X FEMALE NPT, ORIFICE D, 1/2 INCH INLET, METAL TO METAL, THREADED CAP, NON CODE AIR / GAS, SST SPRING MATERIAL. FREE 2 YEAR RADWELL WARRANTY [See More]
- Media: Gas
- Connection Description: Threaded
from DigiKey
Pressure Operated Pressure Switch Sub-Base Mount [See More]
- Media: Air; Water; Gas
- Maximum Pressure: ? to 20.00
from Radwell International
SAFETY VALVE, PRESSURE RELIEF, MODEL 6010, SIDE OUTLET, 0.121 IN2 ORIFICE, 1/2 IN INLET, 3/4 IN OUTLET, METAL SEAL, PLAIN LEVER, AIR/GAS ASME SEC VIII/XIII, SS SPRING, 120 PSIG PRESSURE. FREE 2 YEAR RADWELL WARRANTY [See More]
- Media: Gas
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, MODEL 330S, 1/4 INCH MNPT, GAS ASME SECTION VIII, 6500 PSIG, 186 SCFM CAPACITY, URETHANE SOFT SEAT. FREE 2 YEAR RADWELL WARRANTY [See More]
- Media: Gas
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
DISCONTINUED BY MANUFACTURER, PROPORTIONAL RELIEF VALVE, 1/4IN MALE NPT X 1/4IN FEMALE NPT, 1500-2250 PSIG, SET FOR 2000 PSIG, LIQUID OR GAS, ETHYLENE PROPYLENE SEAL. FREE 2 YEAR RADWELL WARRANTY [See More]
- Media: Gas
from DigiKey
Pressure Operated Pressure Switch DIN Rail [See More]
- Media: Air; Gas
- Maximum Pressure: 30.00 to 116.00
- Valve Size: 0.16
from Radwell International
DISCONTINUED BY MANUFACTURER, PROPORTIONAL RELIEF VALVE, 1/4IN MALE NPT X 1/4IN FEMALE NPT, 5000-6000 PSIG, SET FOR 5500 PSI, LIQUID OR GAS, ETHYLENE PROPYLENE SEAL. FREE 2 YEAR RADWELL WARRANTY [See More]
- Media: Gas
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
SAFETY VALVE, PRESSURE RELIEF, MODEL 6010, SIDE OUTLET, 0.216 IN2 ORIFICE, 3/4 IN INLET, 1 IN OUTLET, METAL SEAL, PLAIN LEVER, AIR/GAS ASME SEC VIII/XIII, SS SPRING, 150 PSIG PRESSURE. FREE 2 YEAR RADWELL WARRANTY [See More]
- Media: Gas
from DigiKey
Negative Output Pressure Switch Sub-Base Mount [See More]
- Media: Air; Gas
- Maximum Pressure: 0.70 to 7.00
from Radwell International
PRESSURE RELIEF VALVE, 1500 PSI AIR / GAS, 1/4 MNPT, BRASS. FREE 2 YEAR RADWELL WARRANTY [See More]
- Media: Gas
- Primary Material: Brass / Bronze
from DigiKey
Negative Output Pressure Switch Sub-Base Mount [See More]
- Media: Air; Gas
- Maximum Pressure: 1.00 to 36.00
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 National Oilwell Varco
Valves. NOV's Valve Division manufactures top of the line Reset Relief Valves, Shear Relief Valves, Float Valves, and Gate Valves for the oil and gas industry. These product lines protect drilling equipment from pressure spikes and backflow, which can lead to premature failure of equipment if not... [See More]
- Media: Gas
- Controlled Pressure Range: 0.00 to 10000.00
from WEH Technologies Inc.
Vacuum pressure relief module for vacuum pump protection. The vacuum pressure relief module is used to protect the vacuum pump from excess pressure. Even in cases of rapid pressure rises (up to 4,350 psi) the vacuum pressure relief module protects the vacuum pump and its peripherals effectively. If... [See More]
- Media: Air; Gas; High Purity
- Maximum Pressure: 2.90
- Valve Size: 0.47
- Connection Description: Threaded; Clamp Flange
from Armstrong International
The GD-10/10F is a lightweight direct-acting diaphragm valve used primarily for pneumatic tool air supply and non-hazardous gas regulation. Screwed connections make it easy to support in position without external sensing lines or other parts. Zinc or aluminum bodies eliminate rust and scale. Plug,... [See More]
- Media: Air; Compressed Air; Gas
- Maximum Pressure: 0.00 to 250.00
- Valve Size: 0.25 to 1.00
- Connection Description: Threaded; (1/4", 3/8", 1/2", 3/4", 1") NPT
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 Emerson Automation Solutions – TESCOM Regulators, Valves & Systems
TESCOM ™ Compact Panel is a central gas supply unit for the pressure control of analytical gases in laboratory facilities. Depending on the requirements, these units switch over to a spare cylinder to enable an uninterrupted gas supply. The use of contact gauges allows the monitoring of empty... [See More]
- Media: Gas; High Purity; Specialty Corrosive
- Maximum Pressure: 2900.00 to 4350.00
- Valve Size: 0.25
- Controlled Pressure Range: 44.00 to 508.00
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; 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 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 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 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 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 Seetru Limited
Flows Rates: Flow calculated based upon: Air @ 15 °C and 1013 mbar and are for guidance only, contact Seetru for help in sizing to your specifications. Product Description: 10mm Nominal Bore Atmospheric Discharge Safety Relief Valve For Compressed Air & Gases. Notes: Relieving pressure is set... [See More]
- Media: Air; Gas
- Maximum Pressure: 6.96 to 667.17
- Valve Size: 0.50 to 0.75
- Connection Description: Threaded; 1/2" to 3/4" BSP, BSPT, NPT
from CIRCOR Energy
CIRCOR Energy is pleased to offer the Model 3500 as part of our Pilot Operated Valves portfolio. Below is a list of features that will enable you to better understand its capabilities. Features. Snap acting & modulating options available. API orifice sizes "D" through "T". Air & gas... [See More]
- Media: Gas; LP Gas; Natural Gas
- Controlled Pressure Range: 900.00 to 6170.00
- Valve Size: 1.00 to 8.00
- Connection Description: BoltFlange
from Watson McDaniel Company
The WSVB Safety Relief Valves are used for over-pressure protec- tion on unfired pressure vessels in saturated steam systems. As safety valves open on a non-compressible fluid applica- tion, the disc lifts directly proportional to the increase in system pressure over the valve set point. Safety... [See More]
- Media: Air; Water; Gas; Steam
- Maximum Pressure: 250.00
- Valve Size: 0.50 to 0.75
- Connection Description: Threaded; 1/2" NPT, 3/4" NPT
from Cooper Valves
When performance under pressure is critical, the Accuseal ® Automated Relief Valve is a must, The Accuseal ARV design provides automatic or manual overpressure protection for steam boiler systems, assisting with venting for start-up and shutdown. [See More]
- Media: Gas; Natural Gas; Sour Gas; Specialty Corrosive
- Maximum Pressure: 3705.00 to 11110.00
- Valve Size: 1.00 to 2.00
- Connection Description: BoltFlange; Butt Weld; BW RFF Custom
from Watts
Series Figure 41A Safety Relief Valves for Air, Gas, and Vapors are ASME section VIII valves used for compressors, intercoolers, aftercoolers and receivers, air makeup units, gas burners, pneumatic conveying/elevating equipment, dryers and other pressure vessels and piping, that handle air, gases,... [See More]
- Media: Air; Water; Gas
from ESAB Welding and Cutting Products
Features. Wide assortment of NPTF Thread Check Valves. For oxygen and fuel gas service [See More]
- Media: Gas; Oxygen, Fuel Gas
- Connection Description: Threaded; NPTF-Poppet, NPTF-Swing
- Valve Size: 0.25 to 1.50
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 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 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 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 WEH Technologies Inc.
Vacuum pressure relief module for venting to the outside for vacuum pump protection. The TVS21 vacuum pressure relief module is used to protect the vacuum pump from excess pressure. The vacuum pressure relief module type TVS21 protects the pump from damages by venting the excess pressure safely into... [See More]
- Media: Air; Gas; High Purity
- Maximum Pressure: 2.90
- Valve Size: 0.47
- Connection Description: Threaded; Clamp Flange
from Armstrong International
The GD-30 is a compact, high-performance direct-acting valve. Economical to buy and use, it is ideal for those low- to moderate-flow applications where accuracy of +/- 10% is acceptable. The GD-30 is well suited for laundry and dry-cleaning equipment, hospital equipment, tire molds, humidifiers,... [See More]
- Media: Air; Compressed Air; Gas; Steam
- Maximum Pressure: 250.00
- Valve Size: 0.50 to 2.00
- Controlled Pressure Range: 3.00 to 140.00
from Emerson Automation Solutions – TESCOM Regulators, Valves & Systems
TESCOM ™ Wega Mini cylinder pressure regulator is designed for gas purities up to 6.0 and offers a lightweight & compact integrated relief valve design. Ideal for use in lecture bottle and mobile applications. [See More]
- Media: Gas; High Purity; Specialty Corrosive
- Maximum Pressure: 2900.00
- Valve Size: 0.24
- Controlled Pressure Range: 0.00 to 2900.00
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; 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 Seetru Limited
Flows Rates: Flow calculated based upon: Air @ 15 °C and 1013 mbar and are for guidance only, contact Seetru for help in sizing to your specifications. Product Description: 13mm Nominal Bore Atmospheric Discharge Safety Relief Valve For Compressed Air & Gases. Notes: Relieving pressure is set... [See More]
- Media: Air; Gas
- Maximum Pressure: 40.61 to 304.58
- Valve Size: 0.50 to 0.75
- Connection Description: Threaded; 1/2" to 3/4" BSP, BSPT, NPT
from CIRCOR Energy
CIRCOR Energy offers several lines of spring-loaded safety relief valves ideally suited for pipe and pressure vessel protection in Upstream, Midstream and Downstream Hydrocarbon applications. Useful for air, gas, liquid and mixed phase services, these valves are designed for reliable operation, long... [See More]
- Media: Air; Compressed Air; Gas; LP Gas; Natural Gas
- Controlled Pressure Range: 12500.00
- Valve Size: 0.25 to 3.00
- Connection Description: Threaded
from ESAB Welding and Cutting Products
Heavy Duty Relief Valves are easily maintained for long life. Features. Use with any non-corrosive, non-toxic industrial gas. Easily maintained for long life. Equipped with 3/4 in. NPT male inlet, 3/4 in. NPT female outlet [See More]
- Media: Gas; Non-corrosive, Non-toxic Industrail Gas
- Maximum Pressure: 20.00 to 60.00
- Valve Size: 0.38 to 0.75
- Connection Description: Threaded; .3/4" NPT Male, 3/4", 3/8" NPT Female
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 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
The GD-45 is a compact, high-performance direct-acting valve. Inexpensive to buy and use, it is ideal for those moderate-flow applications that do not justify the higher cost of pilot-controlled valves. The GD-45 is well suited for laundry and dry-cleaning equipment, hospital equipment, tire molds,... [See More]
- Media: Air; Compressed Air; Gas; Steam
- Maximum Pressure: 300.00
- Valve Size: 0.50 to 1.00
- Controlled Pressure Range: 3.00 to 140.00
from Emerson Automation Solutions – TESCOM Regulators, Valves & Systems
TESCOM ™ Wega 1 single-stage and Wega 2 dual-stage cylinder pressure regulators are designed for gas purities up to 6.0 and offer relief valve integrated into body for low internal gas volume. Both versions are lightweight and compact. Ideal for use in reducing high pressure gases in storage... [See More]
- Media: Gas; High Purity
- Maximum Pressure: 2900.00
- Valve Size: 0.24
- Controlled Pressure Range: 0.00 to 2900.00
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; Gas; Gasoline / Diesel Fuel; High Purity (optional feature); LP Gas; Natural Gas; Specialty Corrosive (optional feature); Steam (optional feature)
- Maximum Pressure: 72.52 to 1450.38
- Valve Size: 0.59
- Controlled Pressure Range: 72.52 to 1450.38
from Seetru Limited
Flows Rates: Flow calculated based upon: Air @ 15 °C and 1013 mbar and are for guidance only, contact Seetru for help in sizing to your specifications. Product Description: 15mm Nominal Bore Atmospheric Discharge Safety Relief Valve For Compressed Air & Gases. Notes: Relieving pressure is set... [See More]
- Media: Air; Gas
- Maximum Pressure: 36.26 to 304.58
- Valve Size: 0.75 to 1.00
- Connection Description: Threaded; 3/4" to 1" BSP, BSPT or NPT
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 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 Emerson Automation Solutions – TESCOM Regulators, Valves & Systems
TESCOM ™ Regulus 4 dual stage pressure reducing regulator is extremely sensitive (mbar range) for gas purity up to 5.0 and offers integrated relief valve. Ideal use for non-corrosive gases including oxygen and product testing applications. [See More]
- Media: Gas
- Maximum Pressure: 290.00
- Valve Size: 0.75
- Controlled Pressure Range: 0.07 to 58.00
from Seetru Limited
Flows Rates: Flow calculated based upon: Air @ 15 °C and 1013 mbar and are for guidance only, contact Seetru for help in sizing to your specifications. Product Description: 18mm Nominal Bore Atmospheric Discharge Safety Relief Valve for Compressed Air & Gases. Notes: Relieving pressure is set... [See More]
- Media: Air; Gas
- Maximum Pressure: 30.46 to 522.14
- Valve Size: 1.00 to 1.50
- Connection Description: Threaded; 1" to 1 1/2" BSP, BSPT or NPT
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 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 Armstrong International
The GP-1000 Series valves are pilot-controlled for accurate regulation of pressure under widely ranging flow. The internal-pilot design eliminates external components and piping. Internally piloted GP Series valves are capable of larger capacity and greater accuracy than direct-acting valves. [See More]
- Media: Air; Gas; Steam
- Maximum Pressure: 15.00 to 250.00
- Valve Size: 0.50 to 2.00
- Controlled Pressure Range: 5.00 to 125.00
from Emerson Automation Solutions – TESCOM Regulators, Valves & Systems
ER5100 Series consists of the ER5000 Series controller and a 44-4000 Series pressure reducing regulator integrated together. Inlet pressures are up to 4500 psig / 310 bar with two different outlet ranges of 400 and 900 psig / 27.6 and 62.1 bar. The ER5100 Series may be ordered with a Cv = 0.7 or a... [See More]
- Media: Gas; High Purity
- Connection Description: Threaded
- Maximum Pressure: 400.00 to 900.00
- Primary Material: Brass / Bronze (optional feature); Stainless Steel (optional feature)
from Seetru Limited
Flows Rates: Flow calculated based upon: Air @ 15 °C and 1013 mbar and are for guidance only, contact Seetru for help in sizing to your specifications. Product Description: 25mm Nominal Bore Atmospheric Discharge Safety Relief Valve for Clean & Particle Laden Gases. Notes: Relieving pressure is... [See More]
- Media: Air; Gas
- Maximum Pressure: 7.25 to 174.05
- Valve Size: 1.00 to 2.00
- Connection Description: Threaded; 1" to 2" BSP, BSPT or NPT
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 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 Armstrong International
The primary purpose of an electrically operated solenoid valve is to automatically control the flow of fluids, liquids and gasses. Armstrong ’s SFA series solenoid valves may be applied on a variety of applications. These flanged, industrial refrigeration only duty solenoid valves are simple... [See More]
- Media: Gas; Fluids, Liquid, Refrigerants
- Connection Description: Flange
- Maximum Pressure: 300.00
- Actuation: Electric
from Emerson Automation Solutions – TESCOM Regulators, Valves & Systems
TESCOM ™ WegaMed single stage preset cylinder pressure regulator in correspondence with DIN EN ISO 10524-1, for pressure reduction of pressurized medical gases. CE-mark according to the Medical Device Directive 2007/47/EC. This product is available in Europe only. [See More]
- Media: Gas; Medical Gases
- Controlled Pressure Range: 0.00 to 73.00
- Maximum Pressure: 2900.00
- Connection Description: Tube Fitting; Socket Weld; NIST Connection or Coupling
from Seetru Limited
Flows Rates: Flow calculated based upon: Air @ 15 °C and 1013 mbar and are for guidance only, contact Seetru for help in sizing to your specifications. Product Description: 25mm Nominal Bore Enclosed Discharge Safety Relief Valve for Compressed Air & Gases. Notes: Maximum permissible built up... [See More]
- Media: Air; Gas
- Maximum Pressure: 81.95 to 435.11
- Valve Size: 1.25 to 2.00
- Connection Description: Threaded; 1 1/4 to 2" BSP, BSPT or NPT
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 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 Emerson Automation Solutions – TESCOM Regulators, Valves & Systems
TESCOM ™ WegaMed 300 single stage preset cylinder pressure regulator according to DIN EN ISO 10524-1 for pressurized medical gases. CE-mark according to the Medical Device Directive 2007/47/EC. Inlet pressure of up to 4350 PSIG [300 bar]. This product is available in Europe only. [See More]
- Media: Gas; Medical Gases
- Controlled Pressure Range: 0.00 to 73.00
- Maximum Pressure: 4350.00
- Connection Description: Socket Weld; Screw Connection
from Seetru Limited
Flows Rates: Flow calculated based upon: Air @ 15 °C and 1013 mbar and are for guidance only, contact Seetru for help in sizing to your specifications. Product Description: 3mm Nominal Bore Atmospheric Discharge Safety Relief Valve for Compressed Air & Gases. Notes: Relieving pressure is set... [See More]
- Media: Air; Gas
- Maximum Pressure: 699.08 to 3501.21
- Valve Size: 0.38 to 0.75
- Connection Description: Threaded; 3/8" to 3/4" BSP or BSPT
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 Emerson Automation Solutions – TESCOM Regulators, Valves & Systems
TESCOM ™ WEGA Corrosive Gases and Purging cylinder pressure regulators are designed with a captured bonnet for use with corrosive gases and gas mixtures (based on the highly reliable 44-2200 and 44-2800 Series regulator technology). Dual-stage version is available. Ideal for use in reduction... [See More]
- Media: Gas; High Purity; Specialty Corrosive
- Maximum Pressure: 2900.00
- Valve Size: 0.12
- Connection Description: Threaded
from Seetru Limited
Flows Rates: Flow calculated based upon: Air @ 15 °C and 1013 mbar and are for guidance only, contact Seetru for help in sizing to your specifications. Product Description: 4mm Nominal Bore Atmospheric Discharge Safety Relief Valve for Compressed Air & Gases. Notes: Relieving pressure is set... [See More]
- Media: Air; Gas
- Maximum Pressure: 1000.76 to 6500.59
- Valve Size: 0.25 to 0.50
- Connection Description: Threaded; 1/4" to 1/2" BSP
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 Seetru Limited
Flows Rates: Flow calculated based upon: Air @ 15 °C and 1013 mbar and are for guidance only, contact Seetru for help in sizing to your specifications. Product Description: 1/8" Nominal Bore Enclosed Discharge Safety Relief Valve for Compressed Air & Gases. Notes: Relieving pressure is set... [See More]
- Media: Air; Gas
- Maximum Pressure: 696.18 to 3495.41
- Valve Size: 0.38 to 0.50
- Connection Description: Threaded; 3/8" to 1/2" BSP, BSPT, NPT
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 Seetru Limited
Flows Rates: Flow calculated based upon: Air @ 15 °C and 1013 mbar and are for guidance only, contact Seetru for help in sizing to your specifications. Product Description: 40mm Nominal Bore Atmospheric Discharge Safety Relief Valve for Compressed Air & Gases. Notes: Relieving pressure is set... [See More]
- Media: Air; Gas
- Maximum Pressure: 40.61 to 136.34
- Valve Size: 2.00 to 2.50
- Connection Description: Threaded; 2" to 2 1/2" BSP, BSPT
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
from Seetru Limited
Flows Rates: Flow calculated based upon: Air @ 15 °C and 1013 mbar and are for guidance only, contact Seetru for help in sizing to your specifications. Product Description: 6mm Nominal Bore Atmospheric Discharge Safety Relief Valve for Compressed Air & Gases. Notes: Relieving pressure is set... [See More]
- Media: Air; Gas
- Maximum Pressure: 40.61 to 522.14
- Valve Size: 0.25 to 0.38
- Connection Description: Threaded; 1/4" to 3/8" BSP, BSPT, NPT
from Check-All Valve Mfg. Co.
The Straight Sided Insert is a thread less check valve. designed to be inserted into any cavity where a check valve is needed and threads are not desired. Available Materials: 316 Stainless Steel (SS). Carbon Steel (CS). Alloy 20 (A2). Alloy C-276 (HC). Brass (BR). Alloy B (HB). MONEL ® (MO) [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: Compression; Face Seal (optional feature); 5-23/64" O.D. Flange
from Seetru Limited
Flows Rates: Flow calculated based upon: Air @ 15 °C and 1013 mbar and are for guidance only, contact Seetru for help in sizing to your specifications. Product Description: 6mm Nominal Bore Enclosed Discharge Safety Relief Valve for Compressed Air & Gases. Notes: Maximum permissible built up... [See More]
- Media: Air; Gas
- Maximum Pressure: 768.70 to 5366.39
- Valve Size: 0.38 to 0.75
- Connection Description: Threaded; 3/8" to 3/4" BSP, BSPT or NPT