DN: DN20~DN500mm
PN: PN1.0MPa/PN1.6Mpa
Material: WCB+F46
Working Medium: Acid-base
Working Temperature: ≤80℃
Standard: GB/T 12235-2007 API JIS DIN
Face to face: GB/T 12221-2005 API JIS DIN
Flange End: GB/T 9113 API JIS DIN
Pressure Temperature Rating: GB/T 12224-2005 API JIS DIN
Testing and inspection: GB/T 13927-2008 API JIS DIN

PTFE lined check valve is specially used to control general corrosive medium. The inner surface of valve body is covered with various kinds of rubber, which has the characteristics of high strength and good corrosion resistance. It is suitable for different working temperature and fluid pipeline to prevent the unidirectional opening and closing of medium countercurrent on various pipelines or equipment. Check valve is a kind of automatic valve which can automatically open and close the valve disc depending on the flow of medium itself to prevent the reverse flow of medium.