F - Mech Eng,Light,Heat,Weapons – 16 – K
Patent
F - Mech Eng,Light,Heat,Weapons
16
K
137/44
F16K 17/18 (2006.01)
Patent
CA 1091127
A B S T R A C T A combination pressure regulating and flow control valve which includes a valve body and cover means having an upstream port and downstream port, and a fluid passage interconnecting said ports, An adjustable pressure regulating valve means is operatively mounted in said fluid passage for regulating the pressure of fluid which enters from the upstream port. In parallel with said pressure regulating valve means is optionally mounted a spring biased check valve means to allow free flow back to the upstream port if the pressure regulating valve is closed to such flow. An adjustable flow control valve means is operatively mounted in said fluid passage downstream of said regulating valve means for providing a metering action on fluid flowing through said fluid passage. In parallel with said flow control valve means is a spring biased check valve means. Said last named check valve means can be interchangeably mounted to either allow free flow from said regulating means to said downstream port and prevent reverse flow except through said flow control valve means, or to prevent flow from said regulating means to said downstream port except through said flow control valve means and to allow free flow from said downstream port to said regula- ting valve. A parallel second fluid passage may be incorporated in the valve body from said upstream port to said downstream port. Operatively mounted in said parallel second fluid passage is an adjustable spring load- ed check valve means. This check valve is mounted so as to prevent flow from said upstream port to said downstream port. When flow takes place from said downstream port to said upstream port the adjustable spring means can be set to allow no flow through said parallel passage, or to allow flow until a preset pressure at the downstream port is reached then to close against flow, or to allow free flow from said downstream port to said upstream port.
326539
Borden Ladner Gervais Llp
Mac Valves Inc.
LandOfFree
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