Steel Pressure Relief Valves
Description
Steel 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 internal pressure surpasses the set threshold, allowing excess fluid to escape and thereby reducing the pressure to safe levels.
Working Principle
The working principle of steel pressure relief valves involves a spring-loaded mechanism that keeps the valve closed under normal conditions. When the pressure within the system exceeds the force exerted by the spring, the valve opens, allowing the excess fluid to be released. This mechanism ensures that the system pressure is maintained within safe limits, preventing potential damage or catastrophic failure. The valves are crucial for maintaining safety and operational integrity in systems that handle pressurized fluids.
Applications
Steel pressure relief valves are used in a variety of industries and applications. They are essential in chemical processing plants to prevent hazards associated with unstable substances. In the energy sector, these valves are used in power generation facilities to manage steam and gas pressures. They are also critical in water treatment plants to control water pressure and prevent system overloads.
Advantages over other Process Valves
Steel pressure relief valves offer several advantages over other types of process valves. Their compact size and ease of setting and adjustment make them highly versatile and widely used. Unlike some other valves, they provide repeatability and reliability in maintaining system pressure within safe limits. This makes them particularly useful in applications where precise pressure control is essential.
Limitations
One limitation of steel pressure relief valves is that they require regular maintenance and testing to ensure they function correctly. If not properly maintained, they may fail to open at the designated pressure, leading to potential safety hazards. Additionally, these valves may not be suitable for all types of fluids or pressure conditions, and their performance can be affected by factors such as temperature and fluid properties.
Considerations
When selecting and using steel pressure relief valves, several considerations should be taken into account. Initial costs can vary depending on the size and specifications of the valve. Operating expenses may include regular maintenance and testing to ensure reliability and safety. Durability is generally high, but factors such as fluid type and operating conditions can affect the valve's lifespan. Accuracy in pressure relief is crucial, and any deviation from the set pressure can lead to system inefficiencies or hazards. Replacement and maintenance costs should also be considered, as these can impact the overall cost of ownership.
from Almo Manifold & Tool Co.
- Adjustable relief setting from 150 psi to 6000 psi. - Standard screw adjustment for relief setting. - SAE O-ring port for gauging. - Pressure at Y is directly additive to relief setting [See More]
- Primary Material: Stainless Steel; Steel
- Maximum Pressure: 150.00 to 6000.00
- Valve Size: 1.25
- Connection Description: BoltFlange
from G.L. Huyett
Pressure relief vents open and close within a predetermined pressure range. As internal pressures rise, the plunger or check ball opens, allowing pressure to vent. As pressures decrease to below the minimum threshold, the valve closes. [See More]
- Primary Material: Steel
- Maximum Pressure: 0.25 to 80.00
- Valve Size: 0.12 to 0.39
- Controlled Pressure Range: 0.25 to 80.00
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]
- Primary Material: Steel; Cast Steel
- Connection Description: BoltFlange; DN15, DN20, DN25, DN32, DN40, DN50, DN65, DN80 and DN100
- Maximum Pressure: 4.35 to 217.56
- Actuation: Mechanical
from Armstrong International
The GP-2000CS is a high-performance, externally piloted reducing valve for large-capacity requirements. Typical use is on intermittent service, including applications such as heat exchangers, steam coils, rotating dryers, process equipment and heating systems. With a 20:1 rangeability and high Cv,... [See More]
- Primary Material: Stainless Steel; Steel
- Maximum Pressure: 15.00 to 450.00
- Valve Size: 0.50 to 4.00
- Controlled Pressure Range: 3.00 to 300.00
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]
- Primary Material: Brass / Bronze; Stainless Steel; Steel; Exotic Metal; Alloy 20, Alloy C-276, Titanium
- Maximum Pressure: 3000.00
- Valve Size: 0.50
- Connection Description: Threaded; Face Seal (optional feature); 3/8 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]
- Primary Material: Steel
- Controlled Pressure Range: 900.00 to 6170.00
- Valve Size: 1.00 to 8.00
- Connection Description: BoltFlange
from Prince Manufacturing Corp.
FUNCTION. The PRINCE valve model DRV is a differential poppet type double relief. This valve uses the same relief cartridge as the model RV. The double relief is used in systems that require cross over relief protection such a reversible hydraulic motor, or systems that require a cushion valve such... [See More]
- Primary Material: Cast Iron; Steel
- Controlled Pressure Range: 1500.00 to 3000.00
- Maximum Pressure: 3000.00
- Connection Description: Threaded; #12 SAE
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]
- Primary Material: Aluminum; Brass / Bronze (optional feature); Cast Iron (optional feature); Ductile Iron (optional feature); Steel; Exotic Metal (optional feature)
- Maximum Pressure: 0.00 to 150.00
- Valve Size: 0.50
- Controlled Pressure Range: 0.00 to 150.00
from Radwell International
CARTRIDGE INSERT RELIEF CHECK VALVE, KEPSEL, FLEXIBLE SEAL SEAT, MODEL 60, 1-1/2 INCH SIZE, 5 PSI CRACK PRESSURE, BUNA -N O-RING, STEEL. FREE 2 YEAR RADWELL WARRANTY [See More]
- Primary Material: Steel
- Features: Cartridge
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]
- Primary Material: Steel
- Media: Water; Gas; Steam
- Maximum Pressure: 150.00 to 300.00
from HAWE North America Inc.
These pressure limiting valves are electrically remote controlled and rule the hydraulic pressure within the system. This enables arbitrary control of the maximum pressure in the circuit there by protecting it depending on the momentarily required condition. These valves are either directly actuated... [See More]
- Primary Material: Steel
- Connection Description: Threaded; G 1/4, 3/8, 1/2, 1, 3/4
- Maximum Pressure: 652.67 to 10152.64
- Actuation: Manual (optional feature); Pilot (optional feature)
from HydraForce, Inc.
A solenoid-operated, two-way, spool-type, normally open, screw-in, hydraulic relief valve. [See More]
- Primary Material: Steel
- Maximum Pressure: 4307.62
- Valve Size: 0.38
- Connection Description: Threaded; SAE 8 or 3/8" BSP
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]
- Primary Material: Steel; Exotic Metal; Low Alloy Chrome
- Maximum Pressure: 3705.00 to 11110.00
- Valve Size: 1.00 to 2.00
- Connection Description: BoltFlange; Butt Weld; BW RFF Custom
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]
- Primary Material: Steel
- Maximum Pressure: 72.52 to 1740.45
- Valve Size: 0.59
- Controlled Pressure Range: 72.52 to 1740.45
from Check-All Valve Mfg. Co.
The Butt Weld (B4) check valve is a one piece body machined from bar stock, eliminating porosity concerns and providing uniform density for more consistent welds. Made to ASME/ANSI B16.25 for schedule 40 pipe, it carries rugged, dependable Check-All trim with a wide variety of seat materials and... [See More]
- Primary Material: Stainless Steel; Steel; Exotic Metal; Alloy 20,Alloy C-276, Monel, Alloy B
- Maximum Pressure: 1500.00 to 5000.00
- Valve Size: 0.50
- Connection Description: Butt Weld; Face Seal (optional feature)
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]
- Primary Material: Steel
- Controlled Pressure Range: 12500.00
- Valve Size: 0.25 to 3.00
- Connection Description: Threaded
from Prince Manufacturing Corp.
STANDARD FEATURES. Hydraulically balanced, hard chrome plated spool. Handle can be installed in “up ” or “down ” position. Detent release pressure adjustable from 1000 to 2000 PSI. For use with system flows up to 25 GPM. Relief valve adjustable up to 2750 PSI. Tandem center... [See More]
- Primary Material: Cast Iron; Steel
- Maximum Pressure: 2750.00
- Valve Size: 0.50 to 0.75
- Connection Description: Threaded; IN/OUT 3/4 NPTF Work 1/2 NPTF
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]
- Primary Material: Aluminum; Brass / Bronze (optional feature); Cast Iron (optional feature); Ductile Iron (optional feature); Stainless Steel; Steel; Exotic Metal (optional feature); Acetal (optional feature); PVC (optional feature); CPVC (optional feature); PTFE (optional feature); PVDF (optional feature)
- Maximum Pressure: 0.00 to 2500.00
- Valve Size: 0.12 to 1.00
- Controlled Pressure Range: 0.00 to 2500.00
from Radwell International
LOW PRESSURE PROPORTIONAL RELIEF VALVE, RL3 SERIES, 1/4" MNPT X 1/4" FNPT, 300 PSI (20.6 BAR) MAXIMUM PRESSURE, 316LSS STAINLESS STEEL. FREE 2 YEAR RADWELL WARRANTY [See More]
- Primary Material: Stainless Steel; Steel
from HydraForce, Inc.
A screw-in, cartridge-style, multi-function valve which includes a fixed-compensated, priority-type flow regulator and an adjustable pressure relief valve in one cartridge. [See More]
- Primary Material: Steel
- Connection Description: Threaded
- Maximum Pressure: 3000.00
- Actuation: Electric
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]
- Primary Material: Steel
- Maximum Pressure: 72.52 to 1740.45
- Valve Size: 1.26
- Controlled Pressure Range: 72.52 to 1740.45
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]
- Primary Material: Aluminum (optional feature); Brass / Bronze; Stainless Steel; Steel; Exotic Metal; Alloy 20, Alloy C-276, Titanium
- Maximum Pressure: 3000.00
- Valve Size: 0.50
- Connection Description: Threaded; Face Seal (optional feature); 1/2 NPT
from Prince Manufacturing Corp.
STANDARD FEATURES. Economical monoblock construction of high tensile strength gray cast iron. Load check on each spool. Hard Chrome Plated Spools. No face seals on spools. Adjustable cartridge relief. Power beyond available. 4 Position Float Spool for loader boom. 4 Position Regen Spool for loader... [See More]
- Primary Material: Cast Iron; Steel
- Connection Description: Threaded; IN/OUT #10 SAE Work #8 SAE
- Maximum Pressure: 3000.00
- Actuation: Manual
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]
- Primary Material: Stainless Steel (optional feature); Steel; Exotic Metal (optional feature)
- Maximum Pressure: 0.00 to 10000.00
- Valve Size: 0.12
- Controlled Pressure Range: 0.00 to 10000.00
from Radwell International
HIGH PRESSURE PROPORTIONAL RELIEF VALVE, 316LSS STAINLESS STEEL, 1/4 INCH MNPT X 1/4 INCH FNPT. FREE 2 YEAR RADWELL WARRANTY [See More]
- Primary Material: Stainless Steel; Steel
from HydraForce, Inc.
A screw-in, cartridge-style, spring biased, pressure reducing logic element. [See More]
- Primary Material: Steel
- Connection Description: Threaded
- Maximum Pressure: 5000.00
- Actuation: Electric
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]
- Primary Material: Steel
- Maximum Pressure: 14.50 to 232.06
- Valve Size: 1.26
- Controlled Pressure Range: 14.50 to 232.06
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]
- Primary Material: Aluminum (optional feature); Brass / Bronze; Stainless Steel; Steel; Exotic Metal; PVC; PTFE; FEP Encapsulator
- Connection Description: BoltFlange; Face Seal (optional feature); 1-3/8" O.D. Flange
- Valve Size: 0.50
- Actuation: Pressure
from Prince Manufacturing Corp.
STANDARD FEATURES. Economical monoblock construction of high tensile strength gray cast iron. Load check on each spool. Hard Chrome Plated Spools. No face seals on spools. Adjustable cartridge relief. Power beyond available. 4 Position Series Float Spool for loader boom. 4 Position Regen Spool for... [See More]
- Primary Material: Cast Iron; Steel
- Connection Description: Threaded; IN/OUT #8 SAE Work #6-8 SAE
- Maximum Pressure: 3000.00
- Actuation: Manual
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]
- Primary Material: Stainless Steel (optional feature); Steel; Exotic Metal (optional feature)
- Maximum Pressure: 0.00 to 5000.00
- Valve Size: 0.12
- Controlled Pressure Range: 0.00 to 5000.00
from Radwell International
RELIEF VALVE, RH4-SERIES, A-LOK, 1/2 INCH, 0.14 INCH / 3.6 MM ORIFICE, STAINLESS STEEL. FREE 2 YEAR RADWELL WARRANTY [See More]
- Primary Material: Stainless Steel; Steel
- Media: Air
from HydraForce, Inc.
A screw-in, cartridge-style, direct-acting, spool-type, hydraulic pressure reducing/relieving valve, with internal pilot and internal spring-chamber drain. It is designed to act as a pressure regulating valve for secondary circuits. Internal damping makes this valve particularly suitable for use in... [See More]
- Primary Material: Steel
- Maximum Pressure: 5000.00
- Valve Size: 0.25 to 0.38
- Controlled Pressure Range: 150.00 to 3300.00
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]
- Primary Material: Steel
- Maximum Pressure: 72.52 to 928.24
- Valve Size: 0.59
- Controlled Pressure Range: 72.52 to 928.24
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]
- Primary Material: Brass / Bronze; Stainless Steel; Steel
- Connection Description: BoltFlange; Face Seal (optional feature); 4-1/4" O.D. Flange
- Valve Size: 1.00
- Actuation: Pressure
from Prince Manufacturing Corp.
STANDARD FEATURES. Economical monoblock construction of high tensile strength gray cast iron. Load check on each spool. Hard Chrome Plated Spools. No face seals on spools. Adjustable cartridge relief. Power beyond available. 4 Position Float Spool for loader boom. 4 Position Regen Spool for loader... [See More]
- Primary Material: Cast Iron; Steel
- Connection Description: Threaded; IN/OUT #8 SAE Work #6 SAE
- Maximum Pressure: 3000.00
- Actuation: Manual
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]
- Primary Material: Aluminum; Brass / Bronze (optional feature); Cast Iron (optional feature); Ductile Iron (optional feature); Stainless Steel; Steel; Exotic Metal (optional feature); PTFE (optional feature)
- Maximum Pressure: 0.00 to 3000.00
- Valve Size: 0.12
- Controlled Pressure Range: 0.00 to 3000.00
from Radwell International
SAFETY RELIEF VALVE, ASME CODE 112CSS MODEL, BRASS, STAINLESS STEEL BALL, 3/8" NPT, 100 PSI. FREE 2 YEAR RADWELL WARRANTY [See More]
- Primary Material: Brass / Bronze; Stainless Steel; Steel
from HydraForce, Inc.
A screw-in, cartridge-style, direct acting, poppet-type hydraulic relief valve, which can be infi nitely adjusted across a prescribed range using a variable electric input. Pressure output is proportional to DC current input. This valve is intended for use as a pressure limiting device in demanding... [See More]
- Primary Material: Steel
- Maximum Pressure: 500.38
- Valve Size: 0.38 to 0.50
- Controlled Pressure Range: 0.00 to 500.00
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]
- Primary Material: Steel
- Maximum Pressure: 72.52 to 928.24
- Valve Size: 1.26
- Controlled Pressure Range: 72.52 to 928.24
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]
- Primary Material: Steel; FEP Encapsulator
- Maximum Pressure: 55.00
- Valve Size: 1.00
- Connection Description: BoltFlange; Face Seal (optional feature); 4-1/4" O.D. Flange
from Prince Manufacturing Corp.
FUNCTION. The PRINCE valve model RD-1800 is a direct acting ball/spring type pressure relief. The valve is compact and simple in design. This type relief is fast opening and is well suited for pressure spike protection. The performance curves below indicate the low cracking pressure typical to... [See More]
- Primary Material: Cast Iron; Steel
- Maximum Pressure: 2500.00
- Valve Size: 0.38
- Controlled Pressure Range: 1000.00 to 2500.00
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]
- Primary Material: Aluminum; Brass / Bronze (optional feature); Cast Iron (optional feature); Ductile Iron (optional feature); Stainless Steel; Steel; Exotic Metal (optional feature); Acetal (optional feature); PVC (optional feature); CPVC (optional feature); PTFE (optional feature); PVDF (optional feature)
- Maximum Pressure: 0.00 to 500.00
- Valve Size: 1.00 to 4.00
- Controlled Pressure Range: 0.00 to 500.00
from Radwell International
SAFETY RELIEF VALVE, 100 PSI SET, 3/4 INCH FNPT INLET / 1 INCH MNPT OUTLET, 15 - 1200 PSI, STAINLESS STEEL, CLOSED CAP. FREE 2 YEAR RADWELL WARRANTY [See More]
- Primary Material: Stainless Steel; Steel
from HydraForce, Inc.
A screw-in, cartridge-style, pilot-operated, spool-type pressure relief valve, which can be infi nitely adjusted across a prescribed range using a variable electric input. Pressure output is inversely proportional to DC current input. This valve is intended for use as a pressure limiting device in... [See More]
- Primary Material: Steel
- Maximum Pressure: 3495.41
- Valve Size: 0.38
- Controlled Pressure Range: 59.47 to 3002.28
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]
- Primary Material: Brass / Bronze; Steel
- Maximum Pressure: 145.04 to 2900.75
- Valve Size: 0.31
- Controlled Pressure Range: 145.04 to 2900.75
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]
- Primary Material: Brass / Bronze; Stainless Steel; Steel; Exotic Metal; Titanium
- 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 Prince Manufacturing Corp.
STANDARD FEATURES. Economical monoblock construction of high tensile strength gray cast iron. Load check. Hard Chrome Plated Spool. Optional 4 Position Float on 1st spool. Adjustable ball spring relief (1000 PSI to 3000 PSI). Open center to closed center conversion available on some models. See... [See More]
- Primary Material: Cast Iron; Steel
- Maximum Pressure: 3000.00
- Valve Size: 0.50
- Connection Description: Threaded; IN/OUT 1/2 NPTF Work 1/2 NPTF
from Radwell International
DISCONTINUED BY MANUFACTURER, PRESSURE RELIEF VALVE, NCHL2 SERIES, 60 PSI, SOLID BRASS BODY AND SPRING, STAINLESS STEEL SPRING/GUIDES/PULL RING, VITON SEAL STANDARD, TEMP RANGE 0-350 DEG FAHRENHEIT, RELIEVES +/- 10 PERCENT OF SET PRESSURE. FREE 2 YEAR RADWELL WARRANTY [See More]
- Primary Material: Brass / Bronze; Stainless Steel; Steel
from HydraForce, Inc.
A screw-in, cartridge-style, pilot-operated, spool-type hydraulic relief valve, which can be infi nitely adjusted across a prescribed range using a variable electric input. Pressure output is proportional to DC current input. This valve is intended for use as a pressure limiting device in demanding... [See More]
- Primary Material: Steel
- Maximum Pressure: 3495.41
- Valve Size: 0.38 to 0.50
- Controlled Pressure Range: 100.08 to 3002.28
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]
- Primary Material: Steel
- Maximum Pressure: 72.52 to 928.24
- Valve Size: 2.56
- Controlled Pressure Range: 72.52 to 928.24
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]
- Primary Material: Brass / Bronze; Stainless Steel; Steel; Exotic Metal; Alloy 20, Alloy C-276,, Titanium
- Maximum Pressure: 3000.00
- Valve Size: 0.50
- Connection Description: Compression; Face Seal (optional feature); 5-23/64" O.D. Flange
from Prince Manufacturing Corp.
STANDARD FEATURES. Economical monoblock construction of high tensile strength gray cast iron. Load check. Hard Chrome Plated Spool. Optional 4 Position Float. Differential Poppet Style Relief, Adjustable from 1500 to 3000 psi (Also. available in Low Pressure Version Adjustable from 500 to 1500 psi). [See More]
- Primary Material: Cast Iron; Steel
- Connection Description: Threaded; IN/OUT #10 SAE Work #8 SAE
- Maximum Pressure: 3000.00
- Actuation: Manual
from Radwell International
DISCONTINUED BY MANUFACTURER, RELIEF VALVE, 1/2 INCH ENDS, 0.14 INCH (3.6 MM) ORIFICE SIZE, 316 STAINLESS STEEL, RH4 SERIES. FREE 2 YEAR RADWELL WARRANTY [See More]
- Primary Material: Stainless Steel; Steel
from HydraForce, Inc.
A screw-in, cartridge-style, single-stage, poppet-type pressure relieving valve, which can be infi nitely adjusted across a prescribed range using a variable electric input. Pressure output is inversely proportional to DC current input. [See More]
- Primary Material: Steel
- Maximum Pressure: 3480.90
- Valve Size: 0.38 to 0.50
- Controlled Pressure Range: 100.08 to 3002.28
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]
- Primary Material: Steel
- Maximum Pressure: 72.52 to 928.24
- Valve Size: 1.97
- Controlled Pressure Range: 72.52 to 928.24
from Check-All Valve Mfg. Co.
The Tubing Check Valve-Flared is a three piece constructed valve with 37 º flared ends which conform to J. I. C. and S. A. E. Hydraulic Standards. These valves are designed for maximum flow with minimal pressure drop. Available Materials: 316 Stainless Steel (SS). Brass (BR). Carbon Steel (CS) [See More]
- Primary Material: Brass / Bronze; Stainless Steel; Steel; Exotic Metal; Titanium
- Maximum Pressure: 3000.00 to 8500.00
- Valve Size: 0.25
- Connection Description: Threaded; Tube Fitting (optional feature); Face Seal (optional feature); 1/4" Tubing Size
from Prince Manufacturing Corp.
STANDARD FEATURES. Economical monoblock construction of high tensile strength gray cast iron. Load check on each spool. Hard Chrome Plated Spools. Optional 4 Position Float on 1st spool. Differential poppet style relief, adjustable from 1500 to 3000 psi (also available in low pressure version... [See More]
- Primary Material: Cast Iron; Steel
- Connection Description: Threaded; IN/OUT 3/4 NPTF Work 1/2 NPTF
- Maximum Pressure: 3000.00
- Actuation: Manual
from Radwell International
DISCONTINUED BY MANUFACTURER, RELIEF VALVE, HIGH PRESSURE, R SERIES, 10-6000 PSI, 316 STAINLESS STEEL, 1/4 INCH MALE NPT. FREE 2 YEAR RADWELL WARRANTY [See More]
- Primary Material: Stainless Steel; Steel
from HydraForce, Inc.
A screw-in, cartridge-style, direct acting, spool-type reducing/relieving valve, which can be infi nitely adjusted across a prescribed range using a variable electric input. Pressure output is proportional to DC current input. This valve is intended for use as a pressure control device in demanding... [See More]
- Primary Material: Steel
- Maximum Pressure: 3002.28
- Valve Size: 0.38 to 0.50
- Controlled Pressure Range: 0.00 to 377.10
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]
- Primary Material: Brass / Bronze; Steel
- Maximum Pressure: 0.00 to 600.00
- Valve Size: 1.26
- Controlled Pressure Range: 0.00 to 600.00
from Check-All Valve Mfg. Co.
The Tubing Check Valve is a three piece constructed check valve with flareless tube ends. The valve is designed for minimum pressure drops. The valves are furnished complete with ferrules and nuts. Available Materials: 316 Stainless Steel (SS). Brass (BR). Carbon Steel (CS) [See More]
- Primary Material: Brass / Bronze; Stainless Steel; Steel; Exotic Metal; Titanium
- Maximum Pressure: 3000.00 to 8000.00
- Valve Size: 0.12
- Connection Description: Compression (optional feature); Tube Fitting; Face Seal (optional feature); 1/8" Tubing Size
from Prince Manufacturing Corp.
STANDARD FEATURES. Economical monoblock construction of high tensile strength gray cast iron. Load check on each spool. Hard Chrome Plated Spools. Optional 4 Position Float and Joystick Handle. Differential poppet style relief, adjustable from 1500 to 3000 psi (also available in low pressure version... [See More]
- Primary Material: Cast Iron; Steel
- Connection Description: Threaded; IN/OUT 3/4 NPTF Work 1/2 NPTF
- Maximum Pressure: 3000.00
- Actuation: Manual
from Radwell International
DISCONTINUED BY MANUFACTURER, PRESSURE RELIEF VALVE, 316SS HT#E46D, MEDIUM, STAINLESS STEEL. FREE 2 YEAR RADWELL WARRANTY [See More]
- Primary Material: Stainless Steel; Steel
from HydraForce, Inc.
A direct-acting, spool-type, drop-in-style, flange-mounted, pressure reducing/relieving valve, which can be infinitely adjusted across a prescribed range using a variable electric input. Pressure output is proportional to DC current input. The Ecoil is an integral part of the valve assembly, and... [See More]
- Primary Material: Steel
- Controlled Pressure Range: 0.00 to 1500.00
- Maximum Pressure: 0.00 to 1500.00
- Connection Description: BoltFlange
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]
- Primary Material: Aluminum; Brass / Bronze; Stainless Steel; Steel
- Maximum Pressure: 0.00 to 600.00
- Valve Size: 0.59
- Controlled Pressure Range: 0.00 to 600.00
from Check-All Valve Mfg. Co.
The Union Insert Valve is the threaded pipe counterpart of the Flange Insert Valve. Designed to be inserted into most standard ground joint unions, it provides the simplest and most economical way to install a check valve in a threaded pipe system. A check valve may be installed anywhere in the... [See More]
- Primary Material: Brass / Bronze; Stainless Steel; Steel; Exotic Metal; Alloy 20, Alloy C-276, Titanium
- Maximum Pressure: 3000.00
- Valve Size: 0.50
- Connection Description: Union; Face Seal (optional feature); 1/2" Line Size
from Prince Manufacturing Corp.
STANDARD FEATURES. Economical monoblock construction of high tensile strength gray cast iron. Load check on each spool. Hard Chrome Plated Spools. Optional 4 Position Float and Joystick Handle. Differential poppet style relief, adjustable from 1500 to 3000 psi (also available in low pressure version... [See More]
- Primary Material: Cast Iron; Steel
- Connection Description: Threaded; IN/OUT 3/4 NPTF Work 1/2 NPTF
- Maximum Pressure: 3000.00
- Actuation: Manual
from Radwell International
SAFETY RELIEF VALVE, ASME CODE 112CSS MODEL, BRASS, STAINLESS STEEL BALL, 1/4" NPT, 185 PSI. FREE 2 YEAR RADWELL WARRANTY [See More]
- Primary Material: Brass / Bronze; Stainless Steel; Steel
from HydraForce, Inc.
A screw-in, cartridge-style, pilot-operated, spool-type reducing/relieving valve, which can be infi nitely adjusted across a prescribed range using a variable electric input. Pressure output is proportional to DC current input. This valve is intended for use as a. pressure limiting device in... [See More]
- Primary Material: Steel
- Maximum Pressure: 3495.41
- Valve Size: 0.38
- Controlled Pressure Range: 100.08 to 3002.28
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]
- Primary Material: Aluminum; Brass / Bronze; Stainless Steel; Steel
- Maximum Pressure: 72.52 to 1450.38
- Valve Size: 0.59
- Controlled Pressure Range: 72.52 to 1450.38
from Check-All Valve Mfg. Co.
The Universal High Pressure check valve is a one piece body machined from bar stock with female pipe threads. The valve is designed and manufactured for high pressure applications. For applications below 3000 PSIG, view our UN-3 series. Available Materials: 316 Stainless Steel (SS). Alloy B (HB). [See More]
- Primary Material: Aluminum (optional feature); Stainless Steel; Steel; Exotic Metal; Alloy 20, Alloy C-276, Titanium
- Maximum Pressure: 10000.00
- Valve Size: 0.38
- Connection Description: Threaded; Face Seal (optional feature); 3/8 NPT
from Prince Manufacturing Corp.
FUNCTION. The PRINCE valve model RV is a differential poppet type inline relief. The valve is made up of a relief cartridge and a cast iron valve body. The differential poppet type relief provides smooth quiet performance with a minimum variation between cracking and full flow pressures. This type... [See More]
- Primary Material: Cast Iron; Steel
- Controlled Pressure Range: 1500.00 to 3000.00
- Maximum Pressure: 3000.00
- Connection Description: Threaded; #12 SAE
from Radwell International
SAFETY RELIEF VALVE, ASME CODE 112CSS MODEL, BRASS, STAINLESS STEEL BALL, 1/4" NPT, 15 PSI. FREE 2 YEAR RADWELL WARRANTY [See More]
- Primary Material: Brass / Bronze; Stainless Steel; Steel
from HydraForce, Inc.
A screw-in, cartridge-style, pilot-operated, spool-type reducing/relieving valve, which can be infi nitely adjusted across a prescribed range using a variable electric input. Pressure output is proportional to DC current input. This valve is intended for use as. a pressure control device in... [See More]
- Primary Material: Steel
- Controlled Pressure Range: 0.00 to 300.23
- Maximum Pressure: 2001.52
- Connection Description: Threaded; SAE 6, 8
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]
- Primary Material: Brass / Bronze; Steel
- Maximum Pressure: 145.04 to 2900.75
- Valve Size: 0.31
- Controlled Pressure Range: 145.04 to 2900.75
from Check-All Valve Mfg. Co.
The Universal Low Pressure check valve is a one piece body machined from bar stock and is designed for minimum pressure drop. The valve is light, compact, and provides maintenance free dependable service. For applications above 3000 PSIG, view our UN-10 series. For applications where weld joint are... [See More]
- Primary Material: Aluminum (optional feature); Brass / Bronze; Stainless Steel; Steel; Exotic Metal; Alloy 20, Alloy C-276, Titanium
- Maximum Pressure: 3000.00
- Valve Size: 0.38
- Connection Description: Threaded; Face Seal (optional feature); 3/8 NPT
from Prince Manufacturing Corp.
STANDARD FEATURES. 1-10 Sections Per Valve Bank. Load Checks On Each Section. Hard Chrome Plated Spools. Compact Construction. Enhanced Metering Section Available in both the High and Low Sections. Differential Poppet Style Relief, Adjustable from 1500 to 3000 psi (Also. available in Low Pressure... [See More]
- Primary Material: Cast Iron; Steel
- Maximum Pressure: 3000.00
- Valve Size: 0.53 to 0.75
- Connection Description: Threaded; NPTF
from Radwell International
PRESSURE RELIEF VALVE, HIGH FLOW (SAFETY) VALVE, BRASS & STAINLESS-STEEL BALL, INLET SIZE = 1/2 INCH NPT, ORIFICE = 0.343 INCH, RELIEF PRESSURE SETTING = 170 PSI. FREE 2 YEAR RADWELL WARRANTY [See More]
- Primary Material: Brass / Bronze; Stainless Steel; Steel
from HydraForce, Inc.
A drop-in, fl ange-mounted, cartridge-style, pilot-operated, spool-type reducing/relieving valve, which can be infi nitely adjusted across a prescribed range using a variable electric input. Pressure output is proportional to DC current input. This valve is intended for use as a pressure control... [See More]
- Primary Material: Steel
- Controlled Pressure Range: 0.00 to 300.23
- Maximum Pressure: 435.11
- Connection Description: Threaded; SAE 6
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]
- Primary Material: Steel
- Maximum Pressure: 0.00 to 900.00
- Valve Size: 2.56
- Controlled Pressure Range: 0.00 to 900.00
from Check-All Valve Mfg. Co.
The Universal Socket Weld check valve is machined from bar stock and designed for a minimum pressure drop. It carries rugged, dependable Check-All trim and there is a wide variety of seat materials and cracking pressures to choose from. This valve series is particularly attractive when weld joints... [See More]
- Primary Material: Stainless Steel; Steel; Exotic Metal; Alloy 20, Alloy C-276, Titanium
- Maximum Pressure: 5000.00
- Valve Size: 0.38
- Connection Description: Socket Weld; Face Seal (optional feature); 3/8 Pipe Size
from Prince Manufacturing Corp.
STANDARD FEATURES. Extended Length Notches for Very Fine Metering. Machined Internal Lands for Precise Control and reduced Dead Band. Low Standby Pressures. Spool Design for reduced Flow Forces. Low Spool Actuating Forces. Use of Standard Series 20 Inlet Sections (20I) and Tie Rod Kits. Same... [See More]
- Primary Material: Cast Iron; Steel
- Maximum Pressure: 3500.00
- Valve Size: 0.38 to 0.88
- Connection Description: Threaded; NPTF and SAE
from Radwell International
DISCONTINUED BY MANUFACTURER, RELIEF VALVE, STAINLESS STEEL LOW-PRESSURE PROPORTIONAL, 1/4INCH. MNPT X 1/4INCH. FREE 2 YEAR RADWELL WARRANTY [See More]
- Primary Material: Stainless Steel; Steel
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]
- Primary Material: Steel
- Maximum Pressure: 72.52 to 1740.45
- Valve Size: 0.59
- Controlled Pressure Range: 72.52 to 1740.45
from Check-All Valve Mfg. Co.
The Wafer Insert (WV) valve is designed to fit between two mating ANSI flanges. Two gaskets are required, instead of the one normally used. The "drop in" valve body fits inside the bolt circle for quick installation and removal in rigid piping applications where the use of the F1, F6, or FP are not... [See More]
- Primary Material: Brass / Bronze; Stainless Steel; Steel; Exotic Metal; Alloy 20, Alloy C-276, Titanium
- Connection Description: BoltFlange; Face Seal (optional feature); 1-3/8" O.D. Flange
- Valve Size: 0.50
- Actuation: Pressure
from Radwell International
BRASS VERTICAL DRUM VENT, FOR PETROLEUM-BASED APPLICATION WITH AUTO RELIEF VALVE, 2 IN NPT/NPS BUNG, PLATED STEEL FLAME ARRESTOR. FREE 2 YEAR RADWELL WARRANTY [See More]
- Primary Material: Brass / Bronze; Steel
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]
- Primary Material: Steel
- Maximum Pressure: 72.52 to 1740.45
- Valve Size: 1.26
- Controlled Pressure Range: 72.52 to 1740.45
from Radwell International
PRESSURE RELIEF VALVE, 3/4 INCH, 316 STAINLESS STEEL, TEFLON DIAPHRAGM. FREE 2 YEAR RADWELL WARRANTY [See More]
- Primary Material: Stainless Steel; Steel
- Features: Diaphragm
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]
- Primary Material: Steel
- Maximum Pressure: 14.50 to 232.06
- Valve Size: 0.59
- Controlled Pressure Range: 14.50 to 232.06