Throttling and shut-off valve

Details Throttling and shut-off valve Throttling and shut-off valve

1974-10-21

1976-04-27

Rosenthal, Arnold

Valves and valve actuation

Sequential opening or closing of serial ports in single flow...

251332, 251333, F16K 2500

Patent

active

039529940

ABSTRACT:
A throttling valve which includes a stem having a shoulder thereon. The lower end of the valve stem extends into a valve seat. The stem includes a shoulder which forces the seat downwardly. The seat mechanism incorporates a seal which encircles the stem. The shoulder on the stem engages a wedge-shaped member driven into a softer member, causing radial expansion to tighten snugly about the stem. A fixed seat member is also incorporated. This enables throttling without erosion of the components when the flow is cut to a trickle, particularly in high pressure circumstances.

REFERENCES:
patent: 1301278 (1922-04-01), Labus
patent: 2692750 (1954-10-01), Davis, Jr.
patent: 3071344 (1963-01-01), Banks
patent: 3145010 (1964-08-01), Karr, Jr.
patent: 3153421 (1964-10-01), Webster
patent: 3428076 (1969-02-01), Lowe
patent: 3809362 (1974-05-01), Baumann

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