Which instrument valves should be installed at the inlet and outlet of the pump ？

The inlet and outlet of chemical pumps usually require the installation of control valves, check valves, pressure gauges and other instrument valves ‌. 

The specific configuration is adjusted according to the system requirements and the type of self priming pumps.

Configuration of imported valves

 Stop valve ‌ : It is used to regulate flow or cut off water flow, facilitating maintenance. ‌

 filter ‌ : Installed after the inlet valve, it filters impurities and protects the pump body. 

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Outlet valve configuration

 check valve ‌ : prevents the backflow of the medium, avoiding pump reverse rotation or water hammer damage. ‌

 control valve ‌ : To regulate the outlet flow or cut off the water flow, stop valves or butterfly valves are often selected. ‌

 pressure gauge ‌ : Monitors the outlet pressure to ensure the system operates within a safe range. 

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Other common configurations

 pressure relief valve ‌ : It needs to be installed on the main outlet pipe to prevent overpressure. ‌

 flexible joint ‌ : reduces vibration and noise, and compensates for pipeline displacement. ‌

 slow-closing check valve ‌ : used in large systems to prevent water hammer when the pump stops. 

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Installation Precautions

The inlet pipe diameter should be larger than the pump suction inlet to avoid air blockage. ‌

Independent supports and hangers should be set up for the outlet pipe to prevent deformation. ‌

Pressure gauges should be calibrated regularly, and for high-temperature media, they should be used in conjunction with trap pipes.