The sealing ring of rubber flap check valve adopts inclined design, short closing time, which can reduce the water hammer pressure.The flap is made of nitrile rubber and steel plate, which is resistant to scouring and has good sealing performance.The structure of rubber flap check valve is simple, and it is convenient for maintenance, repair and transportation. Mainly used in horizontal installation of water supply and drainage systems, can be installed in the pump outlet to avoid backflow and water hammer damage to the pump. Rubber flap check valve can also be installed in the reservoir inlet and outlet pipe bypass pipe, so as to avoid backflow of pool water into the water supply system.

The rubber flap of rubber flap check valve is made of steel plate, steel rod and reinforced nylon cloth as backing, and the outer layer is covered with rubber, which has a long service life. Rubber flap check valve adopts the design of full flow area, with small head loss, not easy to accumulate debris, easy maintenance and other characteristics. Mainly applicable to horizontal installation of water supply and drainage systems, can be installed in the pump outlet to prevent backflow and water hammer damage to the pump. Check valve is generally applicable to clean media, should not be used for solid particles and viscosity of the media.

Rubber flap check valve has the characteristics of small head loss, not easy to accumulate debris, easy maintenance, etc. It adopts full-flow area type design, has the characteristics of small head loss, not easy to accumulate debris, easy maintenance, etc. It is mainly suitable for water supply and drainage system, and it can be installed at the outlet to prevent backflow and water hammer damage to the pump, and the rubber flap is made of steel plate, steel rod and reinforced nylon cloth as the liner, and the outer layer is made of cloaked rubber with a long flap switch.