The rubber valve of the valve is made of steel plate, steel bar and reinforced nylon cloth, and the outer cover is made of rubber, and the service life of the valve is up to 1 million times. H44X (SFCV) series rubber valve check valve with full flow area design, with a small head loss, not easy accumulation of debris, easy maintenance and other characteristics. H44X (SFCV) series of rubber check valve is mainly suitable for horizontal installation of drainage system can be installed in the outlet of the water pump, to prevent backflow of water hammer and pump damage. H44X (SFCV) series of rubber by-pass valve check valve can be installed in the reservoir water pipe pipe, to prevent water back to feed system. Check valve is generally applicable to clean media, should not be used for containing solid particles and the larger viscosity of the medium.