Jiangshan Chongguang Bottom Valve Factory was established in 1993 and is engaged in all kinds of Plastic Pump Bottom Valves. Our products have high quality and low price. We gained the patent in 2002. Our products do not contain steel accessories. Using the national standard thread interface and socket-style interface, so that our products have the characters of corrosion resistance, light weight, big adaptability and watertightness and are energy-saving. Our products can be easily installed with an automatic device and can be used in freshwater, salt water, sea water, sewage and chemical. Our products can avoid the explosion caused by the wrong operations.