Relief valves

155 companies | 420 products
Valves
  • Category
  • What’s new?
  • Type
  • Function
  • Operation
  • Material
  • Body
  • Pressure range
  • Domain
  • Application
  • Product application
  • Other characteristics
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...

{{productDetail[26077]}}
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...

{{productDetail[30490]}}
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...

{{productDetail[88537]}}
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...

{{productDetail[61984]}}
unloading relief valve - 275 psi | BPRV™

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

{{productDetail[62012]}}
vacuum relief valve / unloading - 1 1/2

Cepex offers a complete range of valves...

{{productDetail[30819]}}
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...

{{productDetail[64798]}}
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...

{{productDetail[30491]}}
unloading relief valve - DN 6 - 12, 15 bar

Description

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

{{productDetail[12799]}}
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...

{{productDetail[7311]}}
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...

{{productDetail[13658]}}
unloading relief valve - DN 65 - 100 | DHV712

Pressure relief valve (DHV712)

set range 0,3 up to 10 bar
EPDM diaphragm with PTFE coating
most powerful...

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...

{{productDetail[7050]}}
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.
—...

{{productDetail[14061]}}
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...

{{productDetail[11827]}}
unloading relief valve - max. 5.9 psi

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

{{productDetail[11921]}}
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...

{{productDetail[11803]}}
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)....

{{productDetail[11943]}}
unloading relief valve / low-pressure - MPV 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...

{{productDetail[15663]}}
unloading relief valve / low-pressure - MPV 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 / low-pressure - MPV 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...

{{productDetail[14509]}}
Subscribe to our newsletter
Thank you for subscribing
There was a problem with your request
Invalid email address

Receive updates on this section every two weeks.

With DirectIndustry you can: Find a nearby distributor | Contact the manufacturer to get an estimate or a price Examine product characteristics and technical specifications | View PDF catalogs and other online documentation