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Pneumatic Weir Type Diaphragm Valve

Pneumatic Weir Type Diaphragm Valve

    The SV Diaphragm valve is a new type globe valve has a diaphragm in material of rubber as close element to control the medium.

    The rubber diaphragm separates the lower body and the upper bonnet so that the stem and bonnet above the diaphragm won’t be corroded by corrosive medium.

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  • Features
  • Specification

  • Packing seal is no need;
  • No leakage of medium;
  • Rubber diaphragm with good seal performance;
  • Only suitable for low pressure applications duo to the materials of diaphragm;
  • The diaphragm valve can be classified into weir type, straight type, angle type, wedge type and globe type according to the structure;
  • The pneumatic diaphragm valve can be classified into fail closed type, fail open type and reciprocal type;
  • Body without lined, rubber lined body and fluorine lined body are available;
  • Small pressure loss duo to streamline flow passage;
  • Replaceable diaphragm;
  • Low maintenance cost;
  • Suitable for slurry with solid particles;
  • Suitable for corrosive medium

Product range:

Size: DN15DN400, 1/2’’ 16’’

Pressure rating: PN6, PN10, PN16

End connection: Flanged RF

Body materials: WCB, Cast Iron, Ductile cast iron, PVC, Stainless steel

Lined materials: Rubber: NR, BR, IIR, CR; Fluorine: PP, ETFE, PFA, PTFE

Diaphragm: EPDM, VITON, NBR, CR, Natural rubber,

Technical standards:

Design: GB12239, BS5156

Face to Face: GB12221, BS5156

Flanged ends: GB4216.4, BS4504

Test and inspection: GB/T13927, BS5156