Several different types of diaphragm pressure gauges and diaphragm connectors.

Diaphragm Pressure Gauges: Safe and Accurate Pressure Measurement Solution

The diaphragm pressure gauge is a closed system composed of a diaphragm and a pressure gauge, filled with sealing fluid. When pressure acts on the diaphragm, the diaphragm deforms. The sealing fluid transmits the force to the elastic component in the pressure instrument head, and the pressure value is displayed by the pressure gauge head. The force transmission of the diaphragm pressure gauge is completed by the liquid filled between the inside of the diaphragm and the Bourdon tube. The elastic component is still the Bourdon tube, and the diaphragm isolates the corrosive fluid from the pressure gauge, thereby protecting it from corrosion.

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Specification
Several different types of diaphragm pressure gauges.

Diaphragm pressure gauge

Several different types of diaphragm connectors.

Diaphragm connector

Table 1: Size Table of Diaphragm Pressure Gauge
Model Diaphragm Body Material Diaphragm Material D (mm) H1 (mm) H2 (mm) Caliber G
786-U UPVC FPM / PTFE 79 84 161 DN15, DN20, DN25 socket
G1/2", G1/4", G3/8" (Female)
M20×1.5 (Male)
786-P PP FPM / PTFE 79 84 161 G1/2", G1/4", G3/8" (Female)
M20×1.5 (Male)
786-V PVDF PTFE 79 84 161 G1/2", G1/4", G3/8" (Female)
M20×1.5 (Male)
786-S 304/316 PTFE 74 77 155 G1/2", M20×1.5 (Male)
A dimension drawing of diaphragm pressure gauge.
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