Pressure Loading/Relief Valve

Useful Information

These Durapipe pressure loading and relief valves operate to provide multiple functions within a single valve body offering both pressure loading and pressure relief within pipework systems. They are simple and easy to use and designed with attached labels on the valve to indicate installation directions.

The pressure loading feature allows a back pressure to be built up within the pipe system of between 0-3 bar, whilst the pressure relief function can be set to between 0-10 bar to provide system protection and works by relieving system pressure once the flow of liquid exceeds the set pressure parameters.


Material Polyvinyl chloride (PVC)
Seal Material Ethylene Propylene Diene Terpolymer (EPDM)
Working temperature 0°C to 60°C
Size Range 1/2" to 2"
Standards Complies to PED 97/23/EC



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Grouped product items
CodeProduct NameList PriceYou SaveYou Pay Quantity
375496DP PVC LR Valve EPDM Union Plain 1/2" £553.51 30% £387.46
375497DP PVC LR Valve EPDM Union Plain 3/4" £637.55 30% £446.29
375498DP PVC LR Valve EPDM Union Plain 1" £728.30 30% £509.81
375499DP PVC LR Valve EPDM Union Plain 1 1/4" £847.85 30% £593.50
375500DP PVC LR Valve EPDM Union Plain 1 1/2" £974.75 30% £682.33
375501DP PVC LR Valve EPDM Union Plain 2" £1,154.70 30% £808.29