Ball valve

Details Ball valve Ball valve

1984-03-29

1986-03-04

Schwadron, Martin P.

Fluid handling

Systems

Multi-way valve unit

251315, F16K 11087, F16K 520

Patent

active

045734984

ABSTRACT:
A ball valve is provided which has a ball stem machined to have a through hole connecting the inlet and outlet port of the valve body when the stem is in a first rotational position. The valve body has a drain port which is aligned with the axis of the stem. When the stem is rotated 90.degree. the drain is connected to both the inlet and outlet ports. This connection is provided by a slot extending over 180.degree. of the periphery of the ball end of the stem in a plane normal to the axis of the through hole.

REFERENCES:
patent: 1685330 (1928-09-01), Maroney
patent: 2000552 (1935-05-01), Zaikowsky
patent: 2475702 (1949-07-01), Funke
patent: 2698731 (1955-01-01), Koehler et al.
patent: 3684241 (1972-08-01), Hartmann et al.
patent: 3976102 (1976-08-01), Crocker
Pearson, G. H., "The Design of Valves and Fittings", p. 9, FIG. 2.2, Sir Isacc Pitman & Sons, Ltd., London (1953).

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