Pressure indicator

Details Pressure indicator Pressure indicator

1983-12-21

1985-07-09

Woodiel, Donald O.

Measuring and testing

Fluid pressure gauge

Piston

116272, G01L 716

Patent

active

045274290

ABSTRACT:
A pressure gauge is provided for use with a swimming pool filter system to indicate the condition of the swimming pool filter and advise when changing of the filter element is necessary. The pressure gauge is also useful to remove trapped air within the filter system and relief any vacuum that may be built up within the system by permitting bleed air to pass into and out of the filter system.

REFERENCES:
patent: 4193295 (1980-03-01), Curran

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