Nuclear reactor locking piston drive system and valve assembly

Details Nuclear reactor locking piston drive system and valve assembly Nuclear reactor locking piston drive system and valve assembly

1992-11-06

1994-07-12

Walsh, Donald P.

Fluid handling

With repair, tapping, assembly, or disassembly means

Removable valve with normally disabled supplemental check valve

376230, F16K 4300

Patent

active

053279301

ABSTRACT:
A locking piston drive system and valve assembly is provided for shutdown of a nuclear reactor. "Chatter" in a check valve assembly which occurs during charging and/or re-charging of control fluid within a control line is eliminated by providing a valve head and a resisting portion defined on the valve head to resist movement of the valve, head when it is urged from sealing engagement on its seat during the charging or re-charging procedure.

REFERENCES:
patent: 3347748 (1967-10-01), Olsson
patent: 3722545 (1973-03-01), Furlani
patent: 3893469 (1975-07-01), Baker
patent: 4090917 (1978-05-01), Jabsen
patent: 4227545 (1980-10-01), Augsburger
patent: 4468000 (1984-08-01), Smith
patent: 4489036 (1984-12-01), Jamrus
patent: 4863673 (1989-09-01), Carruth
patent: 4978494 (1990-12-01), Rinker
patent: 5085823 (1992-02-01), Gibo

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