Pressure indicating device for indicating clogging condition of

Details Pressure indicating device for indicating clogging condition of Pressure indicating device for indicating clogging condition of

1985-11-18

1987-03-31

Sever, Frank

Liquid purification or separation

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

Fluid pressure responsive

210 91, 210222, B01D 3514

Patent

active

046541403

ABSTRACT:
A differential pressure indicator is provided for detecting and indicating a clogging condition of a filter element and subsequently an opening condition of a by-pass valve. The indicator also indicates when no filter element is installed in a fluid system. A thermal lockout effective even at high internal fluid differential pressure prevents false actuation of the indicating means at low temperatures due to increased viscosity of the system fluid. A positive locking feature prevents resetting of the indicating means after actuation. Servicing of the filter element is required in order to reset the indicator.

REFERENCES:
patent: 4498495 (1985-02-01), Worwood et al.

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