Motors: expansible chamber type – With motive fluid valve – To provide unequal inlet and exhaust flow rates to single...
Patent
1976-12-03
1980-04-01
Nilson, Robert G.
Motors: expansible chamber type
With motive fluid valve
To provide unequal inlet and exhaust flow rates to single...
91447, 1374938, 137512, 137599, F16K 1718
Patent
active
041955528
ABSTRACT:
A combination pressure reducer and flow control valve which includes a valve body and cover means having an upstream port and a downstream port, and two parallel fluid flow passages interconnecting said ports. An adjustable differential pressure valve means is operatively mounted in a first one of said two parallel fluid flow passages for reducing the upstream pressure of fluid entering the upstream port to provide a reduced downstream pressure at the downstream pressure port. A check valve means is operatively mounted in the second one of said two parallel fluid flow passages and it is operative to check the flow of fluid through said second one of said two parallel fluid flow passages when fluid is flowing through said first one of said two parallel fluid flow passages, and to allow flow of fluid through said second one of said two parallel fluid flow passages when fluid is exhausted into said downstream port and out the upstream pressure port. An adjustable fluid flow control valve means is operatively mounted in either one of said two parallel fluid flow passages to provide either a meter in or a meter out action to the flow of fluid through the passage in which the adjustable fluid flow control valve means is mounted. The function of the check valve means and the adjustable fluid flow control valve means may be incorporated in a single valve means for a meter out action. An adjustable pre-exhaust valve means may be included for quickly exhausting downstream pressure simultaneously with the exhaust of fluid flow through the check valve means.
REFERENCES:
patent: 840876 (1907-01-01), Steedman
patent: 1210891 (1917-01-01), Blanchard
patent: 2495785 (1950-01-01), Stephens
patent: 2499262 (1950-02-01), Stoudt
patent: 2501483 (1950-03-01), Taylor
patent: 2570937 (1951-10-01), Gash
patent: 2881793 (1959-04-01), Lee
patent: 3186307 (1965-06-01), Ellenbogen
patent: 3213886 (1965-10-01), Pearne
patent: 3621867 (1971-11-01), Johnson
Mac Valves Inc.
Mentag Robert G.
Nilson Robert G.
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