BUTTERFLY VALVES WITH LINER

BUTTERFLY VALVES WITH LINER

Double flanged butterfly valve with liner, for on/off or regulating service.


Description

  • Low head loss.
  • Bubble tight shut off.
  • Compact design.
  • Wafer type.
  • Replaceable elastomere liner, isolating body and stem from the flow.
  • Liner is fixed on the body by anchorage grooves.
  • Extra thickness elastomere for better endurance.
  • Disc with spherical machining improving liner’s resistance.
  • Stainless steel stem, isolated from the fluid.
  • Anti-ejection operating stem device.
  • Bearing ensuring the guidance of operating stem and reducing friction.
  • Top seal preventing moistures penetrating in stem area.
  • Flanged connection tight without additional gaskets.
  • Shaft mounting plate according to standard ISO 5211.
  • Symmetrical design allowing a bi-directional flow.
  • Anticorrosion protection by epoxy coating.
  • Large choice of materials for disc and liner.
  • Reduced and easy maintenance.
  • Multi-turn worm gear actuator.
  • French approval for drinking water.

Applications

  • Pumping stations for water distribution and irrigation (filtered water).
  • Treatment plant.
  • Drinking water networks.
  • Irrigation networks (filtered water).
  • Fire protection networks.

Characteristics

  • Range: DN 300 to 1600.
  • PN 10, 16.
  • Temperatures of use: -10°C to +60°C with EPDM liner (for NBR liner, lower / higher temperatures, please consult us).
  • Maximum speed: 3 m/s for PN 10 and 4 m/s for PN 16 valves.
  • Sealing: class A according to standard ISO 5208.
  • Face-to-face dimensions according to standards EN 558-1 series 20 and ISO 5752 series 20.
  • Assembly between flanges according to standards EN 1092-2 and ISO 7005-2:

  - ISO PN 10 or 16 for DN 300 to 1600 or on request according to standard:
  - ANSI B16.5 Class 150 for DN 500 to 1600.