Structural Feature Short structural length,only 1/4~1/8 of that of traditional flanged check valve; Low volume,light weight,only 1/4~1/20 of those of traditional flanged check valve; Quick valve disc closedown,low water hammer pressure; Applicable for and easily installed for vertical or...
Check Valve is applicable for various pipelines with nominal pressure of PN1.0MPa~42.0 MPa,Class150~2500 and nominal diameter of DN15~1200mm,NPS1/2-48 and working temperature of -196~540℃ to be used for protecting from medium back flowing. The different materials selection can apply to the medium involving water, steam, oils, nitric acid, strong oxidizing medium and urea etc.
Stem: Stainless Steel
Spring: Stainless Steel
Seat: EPDM, NBR, Stainless Steel
Size: DN40-DN600mm PN1.0-1.6MPa
Body: Cast Iron, Ductile Iron, Carbon Steel, Stainless Steel
Flange Connection: DIN, ANSI, BS, JIS, UNIVERSAL FLANGE
Disc: Ductile Iron with Nickel Coating, Ductile Iron with Nylon Coating, Stainless Stee 304/316l, Alu-Bronze
Resilient Buna-N or EPDM Seat
Upper and lower PTFE thrust washers
Wafer body style fit between FF or RF flanges
Torsion springs assist valve closure, preventing flow reversal
Thrust washer reduce friction and wear of valve plate hinges
Dual plate valves give maximum strength with minimum opening time
Main Parameter Specification
BW end Dimension：ASME B16.25
Face to Face and End to End：ASME B16.10
Pressure-temperature ratings：ASME B16.34
Wall Thickness Dimension：API 600,BS 1868
Inspection and Test：API598,API600 or API 6D
Design and Manufacture：Cast Steel Check Valve to BS 1868,ASME B16.34,API 6D
Equipped with a professional factory, Naibang Valve is a professional manufacturer and supplier of Rptfe Seat Wafer Dual Check Valve in China. If you want to buy quality product of various beautiful bags, you can get it at a cheap price from us.