Check valves are mainly installed at the outlet of the water pump. When the water pump stops running, the design of this valve, with the characteristics of spring and short travel, can quickly close the valve disc before the water pump is completely shut down, avoiding the generation of water hammer and the occurrence of water impact sound to achieve silent effect. This valve is mainly used for clear water, sewage without impurities, water supply and drainage, fire protection, irrigation, air conditioning system, etc.
Check valve.pdf