F - Mech Eng,Light,Heat,Weapons – 16 – K
Patent
F - Mech Eng,Light,Heat,Weapons
16
K
137/44
F16K 31/00 (2006.01)
Patent
CA 1121692
A B S T R A C T A combination pressure regulating and flow control valve having a first fluid passage interconnecting an upstream port and a down- stream port. An adjustable pressure regulating valve is mounted in the first fluid passage to provide a reduced pressure at the downstream port. An adjustable flow control valve is mounted in said first fluid passage for selective provision of either a meter in or meter out action on fluid flowing through said first fluid passage. In parallel with said flow control valve is a spring biased check valve for selective provision of free flow in a direction opposite to the metering action of the flow control valve. A parallel second fluid passage in the valve interconnects the upstream port with the downstream port. Mounted in the second fluid passage is an adjust- able spring loaded pre-exhaust valve which is vented to the upstream port. When a meter out flow takes place from the downstream port through said first fluid passage to the upstream port the pre-exhaust valve is set to allow flow through the parallel second fluid passage until a pre-set pres- sure at the downstream port is reached and then it closes against flow.
340860
Borden Ladner Gervais Llp
Mac Valves Inc.
LandOfFree
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