Valve cover locking system

Details Valve cover locking system Valve cover locking system

2007-11-06

2007-11-06

Rivell, John (Department: 3753)

Fluid handling

Removable valve head and seat unit

Retained by bonnet or closure

C137S454400, C137S454200

Reexamination Certificate

active

10822906

ABSTRACT:
An apparatus and method to assemble and disassemble a valve cover locking screw assembly for a reciprocating pump module block. The module block has a bore, a removable valve cover closing the bore, and a valve cover locking ring securable to the block and surrounding the bore with internal threads. A valve cover locking screw has cylindrical walls with external threads, a closed top, and an open bottom. A plurality of threaded bolts engage a plurality of threaded openings through the cylindrical walls of the locking screw so that the bolts force the valve cover against the module block thereby creating a fluid tight seal.

REFERENCES:
patent: 3235272 (1966-02-01), Smith
patent: 4039003 (1977-08-01), Cheek
patent: 4187872 (1980-02-01), Freeman et al.
patent: 4508133 (1985-04-01), Hamid
patent: 4601304 (1986-07-01), Schobl
patent: 4661050 (1987-04-01), Deminski
patent: 4718444 (1988-01-01), Boelte
patent: 5362215 (1994-11-01), King
patent: 5605449 (1997-02-01), Reed

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