Relief valves

152 companies | 417 products
Valves
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unloading relief valve / pilot-operated - 25 - 320 l/min | OLS series

Steering comes first with our priority valves, for maximum safety on the road and on the job
A Sauer-Danfoss priority valve will always give your steering system precedence. That makes it an important safety feature...

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unloading relief valve / direct-operated - 1.5 l/min, 420 bar | DVSA series

 Can be used as a pilot valve
 Compact construction for
cavity type AL ˘ 3/4−16 UNF
 Operated by a proportional solenoid
...

unloading relief valve / direct-operated - max. 350 bar | SDD series

Series SDDA ... S−4 units are stack
mounting anti−shock cross−line relief
valves which relieve A to B and/or B to
A....

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unloading relief valve - 3/4

3/4 in. (20mm)
Description:

Series 100XL Temperature and Pressure Relief Valves are used in water heater and hot water storage tank applications to provide automatic temperature...

vacuum relief valve / unloading - 1/2 - 3/4

Description:

For automatic venting of a closed system to atmosphere when a vacuum is created. The Watts LFN360 Vacuum Relief Valve permits air to enter...

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unloading relief valve - ø 4 - 6

The Adjustable-Spring actuator lets you set the desired relief cracking pressure right at the valve by simply turning the adjustment screw (see graphics above). Three diameters are available: 4", 5" and 6" (102mm, 127mm and 152mm) for both air-to-raise (AR) on 1.5" 4" (38mm -...

vacuum relief valve / unloading - 1/2

16AMP-AR Air Relief Valves
Comprised of a Nylon poppet valve with a Buna O-Ring seal, the valves can be supplied with 304 Stainless Steel, or 316L Stainless Steel cap bodies
The valve is supplied in sizes 1½" - 3" (38mm...

unloading relief valve - 1 1/2

Manually adjustable, lockable cap for setting the relief pressure
316L sanitary construction with No....

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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 - 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 - 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 / pilot-operated - 2 - 30 MPa | BP series

This valve reduces the circuit pressure down...

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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 / hygienic rotary - 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 - 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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diaphragm relief valve / unloading - 1/2

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 / 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 - 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 - 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 - 60 l/min, 320 bar | FT3 MO

Fluid flows freely on A, B, P, and T lines; when on service line, protected by the relief valve,...

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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 - 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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