Introduction :
Ruber back valve is also named Pipe rubber back valve ,rubber dirt dischage back valve ,ruber micro resistance back valve ,duck bill valve ,pipe back valve . whole rubber structure ,with duck bill shape ,with character of "Forward flow, reverse Check" new type water drainage product.Depend on pressure analysis and stress calculatioin,for different conditions,use different design mechanism,use different rubber foumulations,according to special technology to produce.Forward working ,the water flow form the inlet,small water pressure could open the valve ,the larger of the water pressure ,the greater the valve opening.reverse work,the valve close automatically,sealed stop,the back pressure is higher,valve port is more tightly.sealing better ,it is widely used for municipal ,irrigation ,sewage and other effuent discharge to prevent back flow,back is the ideal replacement of door.
Rubber back valve is out patent product Patent Number :ZL200320113496.0
Material : NR,EPDM,NBR,NEOPRENE
Rubber back valve,rubber micro slow close valve ,duch bill valve,pipe check valve

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