37mm bourdan pressure gauge of fire extinguisher
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a) Bourdon tube
b) 37mm diameter, or by customize.
c) Selectable scope of threads: M10 x 1, 1/8"NPT for different usages
d) If required, the dial design can be made by your need.
e) Every indicator undergoes the following tests:
1) Over pressure
2) Water resistance
3) Pressure resistance
4) Visual inspection
We have been a leading manufacturer and exporter of Fire Extinguisher Pressure Gauge in China