Non-rotating stem valve

Details Non-rotating stem valve Non-rotating stem valve

1987-03-06

1988-10-18

Walton, George L.

Valves and valve actuation

Mechanical movement actuator

Particularly packed or sealed

251122, 251268, 251274, 277112, F16K 3150, F16K 4104

Patent

active

047781505

ABSTRACT:
A rising stem valve comprising a valve body, a two part valve stem and a stem guide washer. The valve body has a valve seat in a passage between an inlet and outlet port. The two part valve stem comprising a rotating stem and a non-rotating stem and the rotating stem has a threaded bore receiving a threaded end of the non-rotating stem. The non-rotating stem has a non-circular cross section external of the threaded bore and is adapted to carry a closure head to the valve seat. The stem guide washer has a bore positioned in mating relationship with the noncircular cross section of the non-rotating stem, whereby the stem guide washer prevents the stem from rotating when the upper stem is rotated.

REFERENCES:
patent: 272827 (1883-02-01), Zellers
patent: 682688 (1901-09-01), Hart
patent: 1495761 (1924-05-01), Moussette
patent: 2887293 (1959-05-01), Gasche
patent: 3049332 (1962-08-01), Webster
patent: 3204925 (1965-09-01), Montouri
patent: 3269698 (1966-08-01), Koch
patent: 3761053 (1973-09-01), Bedo et al.
patent: 3857410 (1974-12-01), Bedo et al.
patent: 3976279 (1976-08-01), Walker
patent: 4114851 (1978-09-01), Shivak et al.

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