Valve override system

Details Valve override system Valve override system

2006-05-09

2006-05-09

Jacyna, J. Casimer (Department: 3751)

Fluid handling

Processes

Cleaning, repairing, or assembling

C137S015080, C137S015230, C251S264000, C251S326000

Reexamination Certificate

active

07040337

ABSTRACT:
A valve override system for allowing a user to restore flow through a gate valve that has failed in the closed position. The valve override system includes an engagement assembly being designed for engaging a gate of the gate valve assembly whereby the engagement assembly is for urging the gate of the gate valve assembly into an open position to allow fluid to pass through the gate valve assembly.

REFERENCES:
patent: 997038 (1911-07-01), Brummer
patent: 1675986 (1928-07-01), Lyall
patent: 1753524 (1930-04-01), Mawby
patent: 2843152 (1958-07-01), Laird et al.
patent: 2930577 (1960-03-01), Bredtschneider et al.
patent: 3583416 (1971-06-01), Nebesnik et al.
patent: 4205704 (1980-06-01), Benson
patent: 4230299 (1980-10-01), Pierce, Jr.
patent: 5320003 (1994-06-01), Ely et al.
patent: 6244138 (2001-06-01), Campbell

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