Check valve, also known as non-return valve which is designed with round flap, is used for preventing the medium from flowing back through the action resulted from its own gravity and medium pressure to protect the pump from starting or prevent motor from running backward, or leakage of medium in the container due to back flow of the medium. It includes lifting type and swivel type from the point of view of flap movement mode, or plastic and steel lined check valves regarding the material. It features small and simple structure, reliable action, and easy maintenance, and is widely used in corrosive medium piping systems and water drainage systems of chemical, metallurgical, petroleum, electric power, light and textile industries, or used in the cases where installation space is limited.
-- Material: PPH, RPP, PE, PVDF, CPVC, UPVC or steel
-- Lining material: PTFE, PFA, FEP, PVDF, PPH, PE or PO
-- Nominal diameter: DN 25~300 (for full plastic type), DN 40~1200 (for steel lined type)
-- Service temperature: -40~+180℃
-- Maximum working pressure: 1.0MPa
-- Connection: wafer connection, hot melt socket connection, threaded connection or flanged connection