Relief valves

151 companies | 412 products
Valves
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unloading relief valve - max. 36

The CLA-VAL Model 50-20 Seawater Service Pressure Relief Valve is designed...

unloading relief valve / pilot-operated - max. 12

The CLA-VAL Model 50B-4KG-1 Globe / 2050B-4KG Angle Pressure Relief Valve...

unloading relief valve / direct-operated - 1/2

The CLA-VAL Model 55L (UL Listed FM approved) Pressure Relief...

diaphragm relief valve / unloading - 1/2

The Pressure Relief Control is a direct acting, spring loaded,
diaphragm...

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unloading relief valve - DN 25 - 100 | VARIVENT® Q series

Overflow Valves Type Q series VARIVENT® are generally used as pressure relief valves in pipelines,...

unloading relief valve / for hygienic applications - DN 25 - 100 | VARIVENT® D-Force series

This new development avoids dead ends and unwanted product mix-up areas while providing a clean and hygienic production environment. The present...

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unloading relief valve - DN 65 - 100 | DHV712

The DHV712 is a pressure relief valve that can be operated within the pressure range of 0.3 up to 10 bar. It is...

unloading relief valve - DN 10 - 50, 10 bar | DHV712-R

The Stubbe DHV712-R is a thermoplastic pressure relief valve that possess a patented piston...

unloading relief valve - DN 8 - 50, 10 bar | DHV718

The Stubbe DHV718 is a pressure relief valve that possess a simple construction and functionality...

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vacuum relief valve / unloading - 3

Are standard Air and Vacuum Valves mounted on a Surge Check Unit. The Air and Vacuum Valve operates in the normal fashion allowing air to escape freely at any velocity (maximum discharge velocity is approximately 300 feet per second at 6.7 PSI; however, good pipe line design restricts velocity flows of air to 10 feet per second which occurs...

unloading relief valve - 3/4 - 2

Fuel Service Air Release Valves operate while pressurized allowing entrained air to escape from the fuel pipeline, pump or reservoir...

unloading relief valve - 1/2 - 6

Air Release Valves function to release air pockets that collect at each high point of a pressured pipeline. Air...

unloading relief valve / for water systems - 1/2 - 1/4

Operate same as Air Valves for Water, differing only in appearance with elongated taller bodies. Elongated bodies minimize clogging by permitting use of a much longer float stem,...

unloading relief valve / for water systems - 1/2 - 4

Operate same as Air Valves for Water, differing only in appearance with elongated taller bodies. Elongated bodies minimize clogging by permitting use of a much longer float stem,...

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unloading relief valve - max. 400 bar | A OPP series

Over pressure protectors:
As the name indicates, this device saves instruments from the over pressure. Gaugesavers close at a set point protects instruments...

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unloading relief valve / direct-operated - max. 250 dm³/min, max. 63 MPa | DBD

The Pressure Relief Valve type DBD is constructed to restrict an extensive pressure in a hydraulic...

unloading relief valve / direct-operated - max. 330 dm³/min, max. 31.5 MPa | UZPD30

The pressure relief valve type UZPD30 is built to regulate the total pressure...

unloading relief valve / pilot-operated - max. 60 dm³/min, max. 29 MPa | UZPR6

The type UZPR6 is a pressure relief valve commonly utilized in...

unloading relief valve - max. 100 dm³/min, 5 - 30 MPa | UZPR10

Ponar Silesia's UZPR10 Pressure Relief Valve Sandwich Plate is integrated with a screwed-in, pilot-controlled...

cartridge relief valve / unloading / hydraulic - max. 30 dm³/min, max. 29 MPa | UZPD4

Polar Silesia's UZPD 4 is a standard pressure relief valve. This valve exhibits...

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unloading relief valve / hydraulic - 20 gpm, 2 500 psi | RD1800

Model RD1800 Relief Valve - 20 GPM

SPECIFICATIONS
Pressure Rating
Maximum Operating Pressure...

unloading relief valve / hydraulic - 30 gpm, 3 000 psi | RV

Relief Valves
Prince Manufacturing manufactures relief valves for numerous applications. Contact a Prince representative for custom applications. To download drawings, right click select...

unloading relief valve / hydraulic - 30 gpm, 3 000 psi | DRV

Model DRV Double Relief Valve - 30 GPM

SPECIFICATIONS
Pressure Rating
Maximum Operating Pressure...

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unloading relief valve / pilot-operated - 2 - 30 MPa | BP series

This valve reduces the circuit pressure down...

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unloading relief valve - 15 - 6 170 psig | 3800

3800 Series
ASME NB Certified: Air, Water & Steam
3800Sizes 1" x 2" to 12" x 16". Orifice areas from 0.110 to 109 square inches. Pressures from 15 psig to 6,170 psig. Temperature range of -400 °F to +450 °F. Steel body and bonnet with stainless steel trim. Semi-nozzle design. The "D"...

unloading relief valve / for water systems - 1/2 - 3

STANDARD VALVE FOR LIQUID RELIEF IS “SAME SIZED OUTLET” (UNLESS...

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unloading relief valve / hydraulic - 1/4 - 1/2

These adjustable, spring-loaded poppet valves are used to limit system pressure. Excess pressure unseats the poppet, allowing flow with minimal increase in system pressure. As fluid is released the system pressure decreases until the spring force...

cartridge relief valve / unloading / hydraulic - 1

The Kepsel® cartridge has the same internal features as its counterpart Kep-O-seal® adjustable inline relief valve. These adjustable, spring-loaded poppet valves are used to limit system pressure. Excess pressure unseats the poppet, allowing flow with minimal increase in system pressure. As fluid...

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unloading relief valve / pilot-operated - ±2 psi | 760, 761

Both models are designed to regulate valve inlet pressure within ±2...

unloading relief valve - 762 - 767

Models 762, 763, 765, 766 and 767 gas loaded relief / back pressure control valves are specifically designed to regulate and control maximum pipeline pressures or to maintain a minimum...

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unloading relief valve - DN 50 - 200, PN 16 - 25 | BV-05-60

DN: 50-200

PN: 16/25

Application: Drinking water, fire protection and irrigation networks

Range:...

unloading relief valve / for water systems - DN 40 - 80, PN 16 - 40 | BV-05-61

DN: 40-50-60-65-80

PN: 16/25/40

Application: Drinking water, fire protection and irrigation...

unloading relief valve / for water systems - DN 50 - 200, PN 16 - 25 | BV-05-62

DN: 50-65-100-150-200

PN: 16/25

Body:...

unloading relief valve / for water systems - DN 100, PN 10 | BS-05-60

DN: 100

PN: 10

Application: Sewage

Body:...

unloading relief valve / for water systems - DN 100, PN 10 | BS-05-61

DN: 100

PN: 10

Body: GGG-42

Bonnet: GGG-42

Float:...

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unloading relief valve / stainless steel - 0.2 - 16 bar | 35 series

Valves in food- and pharmacy design; different aseptic...

unloading relief valve - 0.4 - 120 bar | 4 series

Open discharge Safety Valves with screwed...

unloading relief valve / low-pressure - 0.05 - 10 bar | 6 series

Open discharge Safety Valves with screwed...

unloading relief valve / low-pressure - 0.05 - 3 bar | 67 series

Open discharge Safety Valves with screwed...

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unloading relief valve / high-pressure - max. 40 l/min, 350 bar | VEP series

Performaces and calibrations are carried out by using hydraulic...

unloading relief valve / direct-operated - max. 80 l/min, max. 350 bar | VLP series

Performaces and calibrations are carried out by using hydraulic...

unloading relief valve / pilot-operated - max. 200 l/min, max. 250 bar | VLPP series

Performaces and calibrations are carried out by using hydraulic...

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unloading relief valve - 9 - 11.5 psig, 450 °C

UHV Compatible all metal construction
ASME UD certified
10CFR851 compliant
Pressure relief...

vacuum relief valve / unloading - 10 psig, -20 - 150 °C

HV Compatible
Pressure relief @ 10 PSIG (±15%)
10CFR851 compliant
ISO 9000 Compliant
Leak tight to 2 x 10-8 std. cc/sec of Helium
316 Stainless steel body,...

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unloading relief valve - max. 40 gpm | C22 / C23 / C24

C22/C23/C24 Valves are available in a choice of stainless steel,...

unloading relief valve / stainless steel - max. 10 gpm | C46

C46 Valves are available in a choice of stainless steel...

diaphragm relief valve / unloading - max. 40 gpm | C62 / C63 / C64

C62/C63/C64 Seal-less Diaphragm Valves bypass system fluid to prevent excess system pressure. When a system discharge is...

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unloading relief valve - max. 10 500 psig, -196...288 °C

Relief Valves

Circle Seal Controls Relief Valves

Choose from a wide...

unloading relief valve / low-pressure - 1/8 - 1/4

Features
Popoff or inline valves
Adjustable crack pressure
Zero leakage
Optional factory preset
Accurate set pressure
Wide range of cracking...

unloading relief valve - 0 - 25 psig | L500 series

Technical Data

Body Materials
Brass
...

unloading relief valve / stainless steel - 1/4 - 1/2

Features
Very accurate cracking pressure
Zero leakage up to 95% of cracking pressure
100% seat leakage tested
Tamper-proof adjustment
PED...

unloading relief valve / stainless steel - 1/8 - 1 1/4

Features
Zero leakage up to 95% of cracking pressure
Positive reseat at high percentage of cracking pressure
Accurate set pressure
Wide range of cracking pressure
Tamper-proof...

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unloading relief valve - DN 6 - 12, 15 bar

Description

System-medium controlled overflow valves are simple and compact regulating devices...

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unloading relief valve / pilot-operated - max. 3 550 psi, max. 400 lpm | RF-*xx series

RF series relief valve is designed on the theory of
differential pressure created by flow across the
orifice of...

unloading relief valve / pilot-operated - max. 3 500 psi, max. 200 lpm | HRF-G03, HRF-G06 series

RF series relief valve is designed on the theory of
differential pressure created by flow across the
orifice of...

unloading relief valve / hydraulic - max. 3 000 psi, max. 35 lpm | MRF series

-DESIGN NUMBER
-PRESSURE ADJUSTMENT RANGE
1 :8-70kgf/cm2 (120-1000PSI)
2:35-140kgf/cm2 (500-2000PSI)
3:70-210kgf/cm2t1000-3000PSI)
-ADJUSTMENT...

unloading relief valve / hydraulic - max. 3 000 psi, max. 70 lpm | MRF, MPR series

- DESIGN NUMBER
" PRESSURE ADJUSTMENT RANGE
1 :8-70kgf/cm2(120-1000PSI)
2:35-140kgf/cm2 (500-2000PSI)
3:70-210kgf/cm2(1000-3000PSI)
"...

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