Product Range
Diaphragm Sealed Pressure Gauges
MASS make Diaphragm Sealed Pressure Gauges are designed to measure the corrosive fluids pressure, where suitable material for bourden tube is not available.

The Diaphragm assembly withstand various corrosive actions encountered and seals the Bourdon tube from the process fluid. The displacement of the liquid filled in the Bourdon tube, through movement of the diaphragm, transmits the process pressure to the gauge. The Diaphragm sealed connections are available with threaded type, flanged type and capillary type mountings.

Specification :
Dial Size 63mm, 100mm & 150mm
Accuracy 11% of thef.s.d.
Bourdon material Phosphor bronze / AISI 316 SS
Socket Brass/S.S. 304/S.S. 316
Movement material Brass/S.S. 304/S.S. 316
Case & Bezel Die Cast Aluminium Weatherproof housing, with screwed outer bezel, stoved enamel black finish. AISI 304 SS / AISI 316 SS Polished case and snap action bezel.
Extra fitments Micro Zero Adjustment Pointer Neoprene blow out disc.
Upper Chamber Material Mild steel painted in black / S.S. 304 / S.S. 316
Diaphragm Material S.S. 316 / MONEL / HASTELOY - C / TENTALUM or any special material, if needed teflon sheating can be provided.
Lower Chamber Material S.S. 304 / S.S. 316 / MONEL / HASTELOY - C / TENTALUM or any special material.
Connection Threaded or flanged or flexible SS capillary can be provided.
Sealing liquid Silicone Oil or suitable liquid as desired by the user. DC-704, 710, FS 1265, Halocarbon.
Temp. Limit 45° C to 250°C Max.
For high temp, go for cooling tower assembly - impulse tubing or capillary extension.
Different type of Chemical Seals can be provided such as :
  • Flange-type diaphragm seals
  • Cell-type (sandwich) diaphragm seals
  • Flange-type seals with extended diaphragm
  • With hygienic-type connection
    - SMS standard
    - Tri clamp fitting
  • Pulp and paper industry design
  • High pressure diaphragm seals, homogeniger flange
  • Welded body, male thread
  • Capsule-Type Chemical Seals
Chemical Seals Accessories can be provided such as :
  • Block flanges for plain pipe
  • Block flanges for jacketed pipe
  • Saddle flanges to be welded on to pipe wall
  • Cooling tower, Capillary extension
  • Flushing ring

All Diaphragm seal models start with suffix " DS ". Follow decodification sheet for detail.

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