Castflow Valves SL

Special Dual Plate Check Valves


Pumping stations and networks for clean water distribution, irrigation (filtered water). Fire protection networks. Air-compressors. Applications with different fluids (to be consulted). Ensuring the protection of pumps against flow inversion.

Technical data

  • Design: EN14341(EN12516) / API594 (ASME B16.34).
  • Face to Face: EN558 series 16 / API594.
  • Range: DN 40 to DN 1400.
  • Connections: Wafer or Flanged PN6 to PN100 EN1092-1/PN6 to Pn40 ISO7005-1 / BS 4504 sect 3.2 ansi125# to 600# acc to ASME B16.1 / B16.5 / B16.47 (JIS to inquire).
  • Maximum working pressures depending on material construction (to be consulted).
  • Operating temperatures -20ºC +120ºC (for other temperatures inquire).
  • Testing: EN12266(ISO5208) or API598.
  • Minimum backpressure for tightness: 0,3 to 0,5 bar.
  • Marking: EN-19 / ASME B16.34 (MSS SP25).

Technical performances

  • Short Face To Face connection with good hydraulic performance.
  • Low pressure drop.
  • Compactness.
  • Seal vulcanized on the seat of the body.
  • Springs helping closing the plates (reducing waterhammer).
  • Two springs for equilibrated forces on the plates.
  • Stops on plates to reduce friction between ears of plates and shaft.
  • Symmetrical flow obtained by the centering pin when the plates are fully opened.
  • Horizontal and Vertical installation in pipeline.
  • Lifting rings from DN 250.

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