Relief valves

151 companies | 412 products
Valves
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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 - 1/2 - 3/4

The Apollo® Model VR Vacuum Relief valve is designed to automatically vent a system should a vacuum...

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unloading relief valve - 3/8

Settings : 1 to 12 bar maximum
Pre-setting...

unloading relief valve - DN 15 - 100, Pn 40 | RP204

GUARANTEED UPSTREAM PRESSURE 40 bar θ 80°C
Pressure gauge...

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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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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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unloading relief valve - 100QR


Description
The valve opens instantly when the pressure in the pipeline exceeds the safe level, thus relieving excessive pressure from the network. When the pressure returns to normal, the valve closes slowly, at an adjustable pace.
...

unloading relief valve - 1/2 - 6

Pressure Sustaining & Relief Valves

PS - Pressure Sustaining Valve
PS(R) - Pressure Relief Valve
The valve maintains upstream pressure, regardless of flow rate variations. The valve will be in the “closed”...

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unloading relief valve - max. 630 dm³/min | RSN, RSN series

Pressure valves from RICKMEIER are reliable, robust and exceptionally durable. All over the globe they are not only applied in the area of oil-hydraulics and lubrication...

unloading relief valve - max. 400 dm³/min | DBV 40 series

Pressure valves from RICKMEIER are reliable, robust and exceptionally durable. All over the globe they are not only applied in the area of oil-hydraulics and lubrication...

unloading relief valve - max. 1 800 dm³/min | DB 9 series

Pressure valves from RICKMEIER are reliable, robust and exceptionally durable. All over the globe they are not only applied in the area of oil-hydraulics and lubrication...

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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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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 - 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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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 / high-pressure - 138 MPa


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

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unloading relief valve / high-pressure - 138 MPa

Pilot Operated Pressure Relief Valve
Size:...

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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 / stainless steel - 74700

Application

The overflow valve is a valve used to perform pressure bypasses for safety purposes in order to protect lines,...

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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 - 30 - 210 bar

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

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