Circuit for operating a valve closure system

Details Circuit for operating a valve closure system Circuit for operating a valve closure system

2005-03-29

2005-03-29

Lopez, F. Daniel (Department: 3751)

Valves and valve actuation

Fluid actuated or retarded

Pilot or servo type motor

C060S399000

Reexamination Certificate

active

06871834

ABSTRACT:
A circuit (10) for operating a bi-directional air motor (12) of a valve closure system for enabling a tank valve to be discretionally operated to either open or closed condition either at the tank by attending personnel or from a remote location, with the capability of closing the tank valve in the event of emergency from a remote location in the absence of attending personnel. The circuit can be constructed using two commercially available valve assemblies ((24, 26).

REFERENCES:
patent: 3279484 (1966-10-01), Brinkel
patent: 4872482 (1989-10-01), Jarrett
patent: 6053202 (2000-04-01), Cunningham

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