Orange dual weir type diaphragm valve
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Dual manufacture a full range of diaphragm valves. Both WO(Weir Orifice) and SO(Straight Orifice) type. The SO valve can safely handle a line pressure of up to 1600kPa(16 Bar) and they are tested to 2500kPa(25 Bar). All bodies and Bonnets are made from high grade SG42 cast iron and are suitable for lining with various rubber, urethane, ceramic, Halar and Fluorpolymers like PTFE and ECTFE.



  • Mining and mineral processing
  • Power generation
  • Sand and gravel
  • Chemical and soda ash
  • Pulp and paper
  • Valve can be installed in any position
  • Housing acts as a built in indicator
  • Long operating life
  • Full bore, low friction loss
  • 100% Drip tight closure even with solids in the medium
  • Light weight
  • Seals in both directions
  • High flexible diaphragm design reducing closing forces, improves recovery to full open position
  • Enclosed body protects diaphragm from the environment and contaminants in the event of diaphragm failure
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