This valve is installed in pipelines or at pump outlets as a safety device to prevent medium backflow and water hammer that could cause reverse pump rotation when the pump stops. It features a lightweight disc with a large opening angle, significant energy‑saving effect, low fluid resistance, a novel water hammer elimination mechanism, stable and reliable sealing performance, wear resistance, long service life, smooth operation, no vibration, and low noise. 

It is suitable for use in water supply and drainage, fire protection, HVAC, and other system pipelines or pump outlets to prevent damage to pipelines or pumps caused by water hammer from medium backflow.