Pilot controlled blanketing valve

Details Pilot controlled blanketing valve Pilot controlled blanketing valve

1997-12-23

1999-03-23

Michalsky, Gerald A.

Fluid handling

Diverse fluid containing pressure systems

Gas pressure storage over or displacement of liquid

137489, 251282, G05D 701

Patent

active

058846557

ABSTRACT:
The blanketing valve has a diagnostic port to aid in analyzing the valve's operation. A pressure gauge is connectable or permanently connected to the diagnostic port. The diagnostic port measures the pressure above a main valve in a passageway connecting a pilot inlet chamber and a main valve piston chamber. This pressure controls the main valve and is an indicator of pilot valve action. Comparing this pressure to inlet pressure indicates pilot response and is a valuable aid in determining what problems may exist.

REFERENCES:
patent: 3087705 (1963-04-01), Hamilton
patent: 3283772 (1966-11-01), Ensign
patent: 3837358 (1974-09-01), Zieg et al.
patent: 4585021 (1986-04-01), Belknap
patent: 5067522 (1991-11-01), Ligh
patent: 5660204 (1997-08-01), Piotrowski

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