Relief valves

151 companies | 415 products
Valves
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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 / pilot-operated - 2 - 30 MPa | BP series

This valve reduces the circuit pressure down...

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unloading relief valve - 1/4

PRESSURE RELIEF VALVES
Angle & Straight-Thru Types (150-675 PSIG)

Brass construction set and sealed at the factory; all N.P.T.F. connections are
American Standard dry-seal tapered pipe threads
Valves...

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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 - 0.1 - 24 gpm (0.3 - 90.84 l/min) | PRESSUREMATIC™


Unlike other relief valves, the Pressurematic™ is specially designed to maintain constant pressure at its inlet over its entire operating flow range. This makes the Pressurematic™ ideal in positive displacement pump applications where line flow may vary with time, but constant fluid pressure is critical.
The Pressurematic™ is not a normal pressure regulator. Rather than reacting to fluid...

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unloading relief valve / for pneumatic conveying - VPP

Flap valves of the VPP series are specially designed as a perfectly tight interception element under cyclones or filters, at the end of a vacuum pneumatic conveying system.
They are particularly suitable for use with abrasive powders and at high temperatures.
The use of this valve is advised...

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unloading relief valve / high-pressure - 138 MPa


Max. Working Pressure: Up to 30,000 PSI (138MPa)
Temperature Rating:...

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unloading relief valve - 3/8 - 9/16

This tool manufactured by Hydratron, is a high pressure relief valve, suitable for application...

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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 - 30 - 210 bar

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

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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 / 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 - 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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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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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...

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...

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...

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 - DN 6 - 12, 15 bar

Description

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

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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 / low-pressure - MPV series

Integrated packages destined for screw or vane compressors, with temperature control functions, oil circuit, oil filtration, air oil separation, minimum pressure and check valve. Available in various sizes, to equip compressors with 3 to 30 Kw of power (flow rates from 0.3 to 4.5 m3/min)....

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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 - 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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