check valve is used for preventing the back flow of the medium in pipelines and equipments. it will open and close automatical.

Detailed description

Series:dual plate wafer check valve

Size:DN50-DN900

Design standard:MSS SP-67 ,API609,EN593

Pressure standard: PN10/PN16/PN20/PN25

Face to Face:API609/ISO5752 series20/BS5155

Top flange:ISO5211

Body:GG25/ductile iron /WCB/Al-bronze/SS304

Plate:GGG40+Epoxy/Al-bronze/CF8/CF8M/Cast iron

Spring:SS304/SS316

Seat:NBR/Hypalon/EPDM/Neoprene/NR/Wear-ResistantEPDM/Viton/Silicon/Heat-Resistant EPDM/White EPDM/EPDM/PTFE

Stem:SS316/Monel K500/SS416/SS304

Suitable temperature: -45~135

Medium :Fresh water, sewage, sea water, air, vapor, food, medicine, oils, alkalis, salt etc