7-5. Safety Relief Valve & Back Pressure Valve

Metering p ump safety relief valve and back pressure valve

Safety relief valve and back pressure valve help to relieve excess pressure on the pump system or maintain pressure at a stetted point.
Safety relief valve is installed on the outlet pipeline of metering pump. When the system pressure becomes abnormal, safety relief valve protects metering pump from any damages.
Backpressure valve shall be installed at the outlet of metering pump in order to reduce siphon and excess feeding, and ensure the metering accuracy of metering pump is not affected, when dosing point is lower than the outlet of metering pump.

Each valve is diaphragm type with 2-port design, which can be used both as safety relief valve and backpressure valve.

Material: PVC, PTFE, SS304, SS316 and carbon steel.
Connection size: DN6, DN8, DN10, DN15, DN20, DN25, DN32, DN40, DN50, DN65, DN80, DN100.
Pressure for different material:
PVC or PTFE type: 0 to  1Mpa
SS304, SS316: 0 to 2.5Mpa