1.Vertical lift silent structure with fast closing action, effectively reducing water hammer impact and pipeline noise, excellent silencing performance.

2.Automatically operated by medium pressure difference to prevent backflow, protecting water pumps and pipeline system from damage caused by reverse flow shock.

3.Rubber soft seal delivers reliable sealing performance, achieving low or zero leakage.

4.Streamlined inner cavity brings low flow resistance and smooth medium transportation, widely applied in HVAC, circulating water and municipal water pump stations.

5.Ductile iron body features high strength and good toughness with complete anti-corrosion coating, long service life; stainless steel material available upon request.

6.Standard RF flanged ends for easy installation, specially suitable for vertical pipeline arrangement.

7.100% hydrostatic shell & seat test before delivery; NDT inspection for castings is available, complete MTC certificate supplied.

8.We provide customized solutions according to customers’ working conditions, drawings and parameter requirements.