The valve is opened/closed by the valve disc moving in a direction parallel to the valve seat hole axis and can only be installed on horizontal pipelines with the major function of preventing medium backflow when shutting down the pump and maintaining the water column required by pumping. 

Design Features 

Design standard as per: BS1868,ASME B16.34, GB/T 12235. 

Compact and reasonable product structure, reliable tightness and good performance;

Lift piston type disc;

Applied widely; 

Rapid closing and flexible actions of the valve disc  

Small closing impact, water hammer is not liable to be generated;  

Product Range 

Body material: carbon steel, stainless steel, alloy steel

Nominal diameter: 1/2"～16"（DN15~DN400） 

Pressure range:Class150～2500（PN10~PN420） 

End connection: RF, RTJ, BW 

Working temperature:-196℃～+560℃