Relief valves

150 companies | 411 products
Valves
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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 / direct-operated - max. 3 l/min, max. 350 bar | CD1-W 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 / direct-operated - max. 3 l/min, max. 350 bar | CD1-W 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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unloading relief valve - 1/2

The Siras boiler / heating system filling and drain valve has an optional hose connection made...

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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 / hydraulic - max. 3 000 psi, max. 70 lpm | MRF, MPR 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 - 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 / 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 / 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 - 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 - 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 - 2 - 3

Designed specifically for use as a...

unloading relief valve - 1 - 1 1/4

8543 Series relief valves are designed for use as a primary relief valve
in larger ASME...

unloading relief valve - 3/4

Designed specifically for use as a primary relief valve on forklift
cylinders, the 8545AK reduces the possibility of improper functioning
of the relief mechanism due to foreign...

unloading relief valve - 3/4 - 1 1/4

Designed for use as a primary relief valve on ASME containers such
as 250, 500...

unloading relief valve - 2

Designed especially for use as a primary relief valve on large
stationary storage containers,...

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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 / high-pressure - 138 MPa


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

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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 / pilot-operated - 5 - 40 l/min | SUH

A valve that provides a reduced pressure supply from the main hydraulic system suitable for pilot hydraulic operation. Accumulator and electric isolation valves...

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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 - DN 6 - 25

The Seetru range of safety valves for refrigeration applications are designed to meet the needs of the refrigeration industry, offering safety valve technology for compressor manufacturers, industrial refrigeration, commercial refrigeration, ice...

unloading relief valve - 53 - 370 barg | QP 329

Flows Rates:
Flow calculated based upon: Air @ 15°C and 1013 mbar...

unloading relief valve / for water systems - 0.30 - 28 barg

Flows Rates Calculated:
Flow calculated based upon: Air @ 15°C and 1013 mbar...

unloading relief valve - 0.30 - 20 barg

Flows Rates Calculated:
Flow calculated based upon: Air @ 15°C and 1013 mbar...

unloading relief valve / stainless steel - 0.70 - 30 barg

Flows Rates Calculated:
Flow calculated based upon: Air @ 15°C and 1013 mbar...

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unloading relief valve - MA series

DESIGN
Diaphragm-Safety valve, angle type, spring-
loaded. Tested for water.
OPERATION
Opens automatically,...

unloading relief valve - DN 15 - 100, 25 bar | NG30 series

DESIGN
Spring loaded angle valve, closed version.
Pressure relief valves are no equipment
pans with safety function as defined at An. 1
of the European Directive 97/23/EC,
OPERATION
Opens...

unloading relief valve - NG3010 series

DESIGN
Spring loaded angle valve, closed version.
Pressure relief valves are no equipment
parts with safety function as defined at Art. 1
of the European Directive 97/23/EC.
OPERATION
Opens...

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