Dual straight through diaphragm valve (DSTDV)

Dual’s Straight-Through Diaphragm Valve consists of the valve body and a diaphragm. The valve is closed mechanically via movement of a compressor gate which is located above the diaphragm. The valves are well suited for on/off throttling control applications involving slurries, powders, liquids, granulated materials and applications where scale build is a problem.


  • 240 Psi (16 Bar).
  • Thrust bearing for ease of opening and closing (handwheel type).
  • Long operating life.
  • Full bore, low friction loss.
  • 100% drip tight closure even with solids in the medium.
  • Light weight.
  • Seals in both directions.
  • All types of actuators can be fitted.
  • Visable spindle indicator.
  • Fast and easy diaphragm change.
  • Single wearing part.
  • Replaceable Urethan diaphragm and body lining.
  • No glands which require regular adjustment.
  • Flexible reinforced diaphragm.
  • Open/closed indicator (Non rising spindle type).
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