Fluid handling – Systems – Multi-way valve unit
Patent
1979-12-31
1981-06-30
Rosenthal, Arnold
Fluid handling
Systems
Multi-way valve unit
251331, 137DIG4, F16K 702
Patent
active
042757657
ABSTRACT:
A direction control flush valve is described in which a hollow cylindrical valve stem that is mounted for rotation within a cylindrical cavity in a valve body is provided with a pair of openings through the wall that subtend a given angle between them and a circumferential groove in a surface of the stem between the openings, there being passageways entering said cavity that are separated by the given angle, whereby rotation of the stem connects adjacent passageways via the circumferential groove. An elastomeric projection is mounted within the hollow stem so as to normally block said openings and thereby prevent flush fluid introduced into the confined space between the inner wall of the stem and the outer wall of the projection from reaching the openings and hence the passageways, but permitting the fluid to reach the openings and passageways when the cross-section of the elastomeric member is reduced by elongation.
REFERENCES:
patent: 3548878 (1970-12-01), Brigandi
Hewlett--Packard Company
Rosenthal Arnold
Timbie Donald N.
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