Differential pressure indicator

Details Differential pressure indicator Differential pressure indicator

1996-02-05

1999-03-09

Drodge, Joseph W.

Liquid purification or separation

With alarm, indicator, register, recorder, signal or...

Fluid pressure responsive

96421, 73744, 116268, B01D 35143, G01L 716, G01L 1908

Patent

active

058795448

ABSTRACT:
A differential pressure indicator has a piston across which inlet and outlet pressures are applied with a spring preventing movement of the piston until a predetermined differential pressure is exceeded. At this point, a port is opened to allow the inlet pressure to be applied to an indicator button to move the indicator button from a retracted position to an operative extended position to indicate that the pressure differential has been exceeded. The use of fluid pressure to operate the indicator button applies a large force to the indicator button and allows it to be securely held in the inoperative position to guard against accidental movement by high G-forces.

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