Hydraulic slow-closing butterfly check valve is mainly used in the pump outlet of industrial water supply and sewage treatment plants to prevent the backflow of media in the pipe network, automatically eliminate destructive water hammer and ensure that the pump and pipeline are not damaged. Hydraulic slow-closing butterfly check valve is mainly composed of valve body, valve flap, buffer device and miniature adjustment valve. Hydraulic slow-closing butterfly check valve has novel structure, small volume, low fluid resistance, smooth operation, reliable sealing, wear resistance and good buffer performance. It is the best product for industrial water and urban sewage discharge.
The double-disc wafer body check valve adopts a flange body design and has a relatively short face-to-face dimension. Double disc spring loaded to provide low cracking pressure. Every Wafer Style Double Door Check Valve with Retainerless Valve that we ship is tested to API 598 and must meet or exceed all applicable API, ANSI and ASTM standards.
Size: DN40-DN1200 End Flange: ANSI B 16.1 EN1092 AS2129 Face to Face: ANSI B 16.10 Top Flange: ISO 5211 Normal Pressure: PN1.0/1.6Mpa(150/200PSI) Body: Cast Iron/Ductile Iron/WCB/ALB/CF8/CF8M Disc: Cast Iron/Ductile Iron/ALB/CF8M/CF8 Stem: SS416/304/316/431 Seat: Hypalon/EPDM/Neoprene/NBR/Viton/Silicon/PTFE Suitable Temperature: -45C to 150C
