一、Structure and purpose

Used at the pump outlet to carry out an accurate open or close via the pilot control of the solenoid valve and,as a check control valve，to prevent the medium from back-flow．When the pump is about to stop water supply，it is slowly closed by about 90％ first to prevent both water hammer and water shock noise from being produced due to sudden stop of the pump and．when the pump stops completely．it is fully closed t0 prevent the water from back flow with the pump so as to effectively protect it from counter movement due to the shock of the back-flow This valve can effectively prevent water hammer and wa-ter shock noise．be reliably sealed and long time used and stably move The solenoid valve can use either AC220V or DC24V power.

四、Schematic diagram of installation

Note :Either elastic seat ring sealed gate valve or butterfly valve can be selected in the schematic diagram of installation Recomended to select the butterfly valve in case of ≥ DN350