Plug valve

Details Plug valve Plug valve

1988-10-31

1990-05-22

Fox, John

Valves and valve actuation

Rotary valves

Plug

251287, F16K 504

Patent

active

049271164

ABSTRACT:
A quarter-turn, on-off plug valve having a valve body provided with a recess opening through a first portion of the body and closed at the opposite end by an integral portion of the body. A pair of stops are provided on a stem portion of the plug for accurately limiting the rotation of the plug to the 90.degree. different open and closed positions of the valve. The stops are defined by flat surfaces engaging a cylindrical retaining pin extending chordally through an upstanding annular wall portion of the body so as to provide improved accurate positioning of the plug in the open and closed positions of the valve.

REFERENCES:
patent: 3563512 (1971-02-01), Hauffe
patent: 3889923 (1975-06-01), Saville et al.
patent: 4262880 (1981-04-01), Danko et al.

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