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Weiss Instruments Diaphragm Seals

Watts Regulator
Diaphragm Seals

The Weiss Series DS Diaphragm Seals are utilized to protect pressure indicators from harmful process fluids. Diaphragm seals isolate pressure gauges and prevent the medium being measured from entering the internals of the pressure gauge.

Some instances which require utilization of a diaphragm seal are:

• Process fluid is corrosive to pressure gauge Internees.

• Process fluid is viscous and would clog gauge internals.

• Process fluid would solidify within the pressure gauge.

The Weiss line of diaphragm seals, in conjunction with Weiss pressure indicators, offers instrumentation that's rugged and carefully calibrated to withstand the most severe industrial, process or OEM service. Weiss diaphragm seals are available in a variety of metal housing materials and process connection sizes to fit most requirements.

OPERATION
The pressure gauge and the instrument side (top housing) of the diaphragm seal are solid liquid filled. When pressure is applied, displacement of the liquid fill in the pressure element, through movement of the diaphragm, transmits process pressure changes directly to the gauge.

FILLING
Fill fluids must be compatible with process medium being measured. Common fill fluids are glycerine and silicone. Consult factory for specific applications and other fills.