Fluid handling – Convertible – Reversible check
Patent
1990-04-09
1991-04-02
Nilson, Robert G.
Fluid handling
Convertible
Reversible check
137584, 13761417, 251192, F16K 506, F16K 1503, F16K 1504
Patent
active
050040057
ABSTRACT:
A combination valve formed of a valve body having a flow passageway therethrough and an opening in the top communicating with the passageway. A rotating member is received in the body, within the flow passageway, the rotating member having a flow passageway therethrough which is alignable with the passageway in the body and having a top opening therein communicating with the passageway through the rotating member. A checking mechanism is supported within the rotating member and moveable from a closed position blocking the passageway therethrough to an open position. A bonnet removably closes the body top opening. A stem is rotatably received in the bonnet having the inner end connected to the rotating member, the member thereby rotatable to permit the flow of fluid in one direction, the checking mechanism blocking fluid flow in the opposite direction, and by rotating the member to permit the flow of fluid in the second direction, the checking mechanism blocks flow in the first direction and wherein the rotating mechanism may be rotated to a third position wherein fluid flow is blocked in either direction and in which the bonnet may be removed to provide access to the interior of the valve and the interior of the rotating member whereby the checking mechanism may be removed and replaced when the valve is in the closed position and subject to fluid pressure.
REFERENCES:
patent: 500944 (1893-07-01), Pickel
patent: 1019590 (1912-03-01), Beck
patent: 1175328 (1916-03-01), Wright
patent: 1238664 (1917-08-01), Groom
patent: 2151098 (1939-03-01), Greenwood
patent: 2589176 (1952-03-01), Wheatley
patent: 3344808 (1967-10-01), Cary
patent: 3348569 (1967-10-01), Frye
patent: 3363650 (1968-01-01), Scaramucci
patent: 3474818 (1969-10-01), Hartman
patent: 3565099 (1971-02-01), Huber
patent: 3851665 (1974-12-01), Coughlin
patent: 4928725 (1990-05-01), Graves
Kachigian Mark G.
Nilson Robert G.
LandOfFree
Combination valve does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Combination valve, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Combination valve will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-321947