Shutoff and regulating valve

Details Shutoff and regulating valve Shutoff and regulating valve

1989-07-24

1990-06-05

Fox, John C.

Valves and valve actuation

With means to increase head and seat contact pressure

With positive reduction

251214, 251312, F16K 502

Patent

active

049307487

ABSTRACT:
A shutoff and regulating valve contains, in a housing (2), a shutoff element which is designed especially as a stopcock (8) and which is arranged to be rotatable by means of a stem (26). The stem (26) is guided outward through a housing cover (20), a first sealing element (50) being provided for sealing purposes. The valve is designed for a minimized leakage rate and high safety requirements. The first sealing element (50) is supported on the underside of the housing cover (20) by an annular disk (54), and a second sealing element (60) is arranged on the upper side of the cover (20), so as to be adjustable, particularly by means of an axially movable bush (62).

REFERENCES:
patent: 1741983 (1929-12-01), Ellberg et al.
patent: 4101113 (1978-07-01), Plessing
patent: 4111392 (1978-09-01), Edelmann
patent: 4126295 (1978-11-01), Natalizia
patent: 4235418 (1980-11-01), Natalizia
patent: 4475712 (1984-10-01), Defoger
patent: 4640305 (1987-02-01), Johnson

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