Rubber Duckbill valve 
 Rubber discharge check valve commonly known: Duckbill valve, also known as: sewage rubber valve http://www.jkyzf.com. The main products are: XH81, XH81A, XH41, XH41A rubber Sewage Check Valve (Spain called "duckbill check valve flexible"; the United States known as the "duckbill valve rubber flat mouth") http://www.jkgssb .com/Info-2010106.html ROSS valve company in Spain, the United States produced the red valve on the basis of summary, exemplary, revolutionary re-design. We are committed to continuous improvement (duckbill check valve flexible) rubber discharge check valve function, improve performance, so that the valve of the strength, toughness, sealing greatly improved, the valve does not have any active components, the avoidance of maintenance. The valve can give straight pipe, flange pipe, concrete pipe, glass pipe support, the valve is widely used in coastal, beach, docks, reservoirs, municipal drainage, sewage, can be described as environmentally friendly green valve, http:// www.jkgssb.com replace the valve check valve door, door easily solve the sand, silt, rocks, vegetation, marine life blocking problems. Sewage Check Valve Flanged rubber products use: used in waterproofing system, drainage system, water pump outlet, pump stations and submerged aeration systems. Main features: rubber flange and valve body into one very easy to install . All-rubber body design, does not cause siltation and things stuck phenomenon, reducing maintenance costs, and allow solid particles smoothly through.