Ductile Iron Di Dual Plate Wafer Check Valve Wafer end swing check valve is mainly composed of three parts: body, disc( stem), spring. The short closing stroke of disc and the spring force improve the closing effect, while also reduce the pressure surge and slamming noise. The valve body...
Dual plate check valve has retainer and retainer-less type design. Dual plate check valves have the advantage of zero leakage toward outside, cost saving. It can be installed in any line orientation, superior seal performance. Valves are designed in accordance to API 594 and have dual plate or single plate design and pin can be retainer-less type.
To API594 Face to face per ANSI B 16.10 Flange ends dimension ANSI B 16.5/ANSI B 16.47 Final inspection tests to API598.
Dual plate or single plate. Spring loaded disc Resilient or metal seated Retainer or Retainer Less Design Round, Full Lug or Double Flange Light-weight & compact design 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 Optional plug disc