Stackable shuttle valve

摘要

A unitary stacked shuttle valve body assembly that may be used in a well drilling blow out preventer circuit. The assembly includes substantially similar shuttle valves that may be assembled and arranged in various configurations to accommodate the requirements and restrictions of the particular circuit in which the assembly may be used. Inlet ports and outlet ports are substantially coaxial and are assembled with central seal connectors that permit rotation of the valve bodies relative to one another. Feed passages, connector passages, and main passages are provided with plugs of different configuration to permit changing port configuration to accommodate the requirements and restrictions of the circuit in which the assembly is used.

主权项

1. A shuttle valve comprising: a body that is stackable with the body of another shuttle valve to form a stacked sequence shuttle valve body assembly, said body having an outer surface, a first inlet port, a second inlet port, an outlet port, said ports each having a center longitudinal axis in a flow direction, a cavity in said body, said cavity being connected by passages to said ports so that fluid flows through said cavity when passing from said first inlet port to said outlet port and when passing from said second inlet port to said outlet port; and only one valve member movably disposed in said body in response to fluid pressure, said valve member being a shuttle movably disposed in said cavity and having a first position closing one of said first and second inlet ports from said outlet port and enabling fluid flow from the other of said first and second inlet ports to said outlet port; said longitudinal axis of said outlet port being essentially coaxial with said longitudinal axis of one of said first and second inlet ports.