A pressure relief valve (also known as an overflow valve) is used to limit or control the pressure in a system. It automatically opens at a set pressure and provides proportional and slow pressure relief. A main application is the protection of a pump in a closed circuit.
You can manually set the set pressure between 0.5 and 2.5 bar (7.25 to 36.25 psi), but in a single relief valve system it should not be set higher than the maximum allowable working pressure (MAWP) in the system. The pressure value can be adjusted with an allen key without disasembly. The blow-off capacity is dependent on the set pressure with a range of 1376 to 1953 m3/h for air and 31.6 to 43 m3/h for water. Please see our datasheet with blow-off capacities for different pressures.
This valve has G 2 inch inlet and outlet ports. The housing material is stainless steel and the sealings are made from FKM (FPM). This model is suitable for compressed air and aggressive, non-flammable gases, water and other neutral, non-toxic fluids, mineral oils. The temperature range of this relief valve is between -20 °C and 200 °C (-4 °F and 392 °F).
Pros:
- Sutable for air and liquids
- Gas-tight and compact design
- Can be adjusted without disassembly
- High blow-off capacity of 1953 m3/h for air (43 m3/h for water)
Cons:
- It is not considered a safety valve as it provides proportional and slow pressure relief
417 series
The 417 series relief valves are designed to open at a set pressure and protect your application from overloading. There is also possible to use this valve as an overflow valve if the system pressure often changes.
The 417 relief valves are available with a wide set pressure range between 0.5 and 20 bar (7.25 and 290 psi), which can be adjusted manually. As opposed to safety valves, relief valves provide gradual pressure relief while safety valves provide immediate pressure relief. They come with various sizes with corresponding blow-off capacities. The sealing material is either FKM or PTFE. They are suitable for compressed air, water, mineral oils and other non-flammable gases and non-toxic fluids.
Specifications
Connection size : 2 inch
Material : Stainless steel
Set pressure (Adjustable) (bar) : 0.5 bar to 2.5 bar
Seal material : FKM (FPM)
Blow-off capacity (air) (m³/h) : 1376 m³/h to 1953 m³/h
Blow-off capacity (water) (m³/h) : 31.6 m³/h to 43 m³/h
Material quality : Stainless steel 316 (1.4401)
Connection type : Inner thread cylindrical BSPP-G
Min temperature (°C) : -20
Max temperature (°C) : 200
Approval : TR ZU 010/2011,TR ZU 032/2013
Blow-off characteristic : Proportional
Spring cap, closed : Yes
Height (mm) : 209
Reviews
There are no reviews yet.