Relief valves

155 companies | 420 products
Valves
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unloading relief valve / high-pressure - DN 25 - 80, PN 16 | GU series

Series: GU
Overflow and pressure relief valve, with lifting lever
Design:...

unloading relief valve / high-pressure - DN 25, PN 16 | GUT series

Overflow valve type GUT/F, PN 16, without lifting lever, body material: ductile cast iron EN-JS 1049 acc....

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unloading relief valve / high-pressure - max. 2.1 MPaG, max. 220° C

COSPECT® - High precision pressure reducing...

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unloading relief valve - PRV, SRV

Pressure Relief Valves are indispensable to the protection of many processes and ultimately your business. Now you can safeguard your high-cost PRVs with affordable...

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unloading relief valve - PRV, SRV

Pressure Relief Valves are indispensable to the protection of many processes and ultimately your business. Now you can safeguard your high-cost PRVs with affordable...

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vacuum relief valve / unloading - 1 1/2

Cepex offers a complete range of valves...

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vacuum relief valve / unloading - 1 1/2

A combination between pressure release valve and single seat valve
...

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unloading relief valve - 1/2 - 2

The thermoplastic pressure relief valve protects equipment and systems against overpressures or sudden pressure surges. Able to handle highly corrosive or ultrapure liquids, the relief valve prevents pumps from dead-heading due to unexpected shut-offs downstream (also known as a bypass relief valve). It maintains back...

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

Type-E Pressure Relief Valve (1/2" – 1-1/4")

The thermoplastic pressure relief valve protects equipment and systems against...

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unloading relief valve - 275 psi | BPRV™

Buckling Pin technology offers an accurate and reliable means of calibrating pressure relief devices. BS&B has developed the BPRV™ Buckling Pin Relief Valve for in-line pressure...

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unloading relief valve - DN 40 - 400, PN 16 | 1470

The 1470 series is a pressure surge relief valve engineered by Hawle. It is suitable for use in potable water.

The valve reduces water hammers in two automatic steps. It...

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compact filtration units for swimming pools cartridge relief valve / unloading / hydraulic - max. 50 l/min, max. 350 bar | CR series

— The CR valve is a direct operated pressure control valve
cartridge type that can be used in blocks or panels with
type D-10B seat.
— It is normally used to control the maximum pressure in...

compact filtration units for swimming pools cartridge relief valve / unloading / hydraulic - max. 100 l/min, max. 350 bar | CRQ series

— The CRQ valve is a pilot operated pressure control valve
cartridge type that can be used in blocks or panels with D-
10C type seat.
— It is normally used to control the hydraulic circuit pressure
and...

compact filtration units for swimming pools cartridge relief valve / unloading / hydraulic - max. 120 l/min, max. 380 bar | DBV series

— The DBV valve is a direct operated pressure control valve
cartridge type that can be used in blocks or panels with
seat.
— It is normally used to control the maximum pressure...

compact filtration units for swimming pools cartridge relief valve / unloading / hydraulic - max. 40 l/min, max. 350 bar | PCK06 series

— The PCK06 valve is a two or three-way pressure
compensator, cartridge type, for block or manifold
application.
— It keeps the pressure drop (characteristic Δp)...

unloading relief valve / direct-operated - max. 3 l/min, max. 350 bar | CD1-W series

— The CD1-W valve is a direct operated pressure control
valve with threaded ports and for flange mounting
installation.
—...

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unloading relief valve / direct-operated - max. 3 l/min, max. 350 bar | CD1-W series

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...

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unloading relief valve / high-pressure - 1/4

High Pressure, Low Flow
These valves are direct operated, differential poppet, dry spring chamber design....

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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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unloading relief valve - 30 - 210 bar

Pressure relief valves (shock valves), single and double-acting (KPDR,...

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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...

compact filtration units for swimming pools 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 - 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 - max. 5.9 psi

The Aerodyne mini relief valve, Model 5280, provides precise pressure
relief of inert gases in a compact...

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unloading relief valve - 0.3 - 1.5 bar | VP150QT

Features
The pressure relief valve VP150QT have been specially designed for use on transformers in which is not admitted any external pollution due to oil released during its operation (i.e....

unloading relief valve - 0.35 - 0.84 bar | RT6 series

Features
When it is required to limit the pressure rise inside a tank, in order to prevent an excessive mechanical stress of the waits, it is necessary to use a safety valve set at a precise overpressure value. The tank of oil-immersed...

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unloading relief valve - 0.35 - 0.84 bar | RT6 series

BASIC FUNCTION
The basic function of a relief valve is either as a standby safety valve to limit system pressure, or as an active control valve used to maintain pressure at a specific level or over a desired range.

When used as a safety valve...

unloading relief valve - 0.35 - 0.84 bar | RT6 series

UNLOADING RELIEF
SOLENOID ACTUATED Two functions in one valve, unloading and relieving. Factory set relief pressure or adjustable option. Integral 250 micron pilot flow filter. Coil: Waterproof, hermetically...

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