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A hydraulic-metering, multiple-valve device for use primarily in a sprinkler system associated with large parcels of land. The valve device comprises a valve housing having an inlet and a plurality of outlets, wherein each outlet is controlled by corresponding valve means disposed within said housin

A hydraulic-metering, multiple-valve device for use primarily in a sprinkler system associated with large parcels of land. The valve device comprises a valve housing having an inlet and a plurality of outlets, wherein each outlet is controlled by corresponding valve means disposed within said housing and each valve means communicates with a flow channel having a drive means operably disposed therein and in direct alignment with the inlet of the housing. There is a timer-sequential metering means having a gear train interconnected between a sequencer drum and the drive means for controlled rotation of the drum, the drum being provided with a plurality of pins positioned and mounted to the surface thereof which cooperate with individual valve-actuating mechanisms, to selectively open and close the individual valve means as the drum rotates. By selecting the number and location of the pins, the sequence and time of operation of each valve may be readily selected.

대표청구항 ▼

A hydraulic-metering, multiple-valve device comprising: a valve housing having an inlet port and a plurality of outlet ports, and a fluid-flow channel common to all outlet ports disposed therebetween having communicating ports arranged therein to allow fluid flow between said inlet and outlet ports;

A hydraulic-metering, multiple-valve device comprising: a valve housing having an inlet port and a plurality of outlet ports, and a fluid-flow channel common to all outlet ports disposed therebetween having communicating ports arranged therein to allow fluid flow between said inlet and outlet ports; a plurality of piston bores intersecting said flow channel and said outlet ports; a cover plate having a plurality of passageways communicating between each piston bore and the atmosphere, whereby fluid in said bore is allowed to discharge when said piston valve is moved to an open position; a plurality of valve means positioned between said flow channel and said outlet ports, whereby fluid flow from said flow to said outlet ports is controlled, and wherein each of said valve means comprises: a valve piston slidably disposed within each of said piston bores to provide a closed or open valve position therein: a gasket removably secured to said valve piston; a valve seat positioned adjacent said channel adapted to accommodate said gasket when said valve piston is in a closed position; biasing means connected to said piston valve whereby said valves are held in a normally-closed position; a drum rotatably mounted to said valve housing; a plurality of valve-actuating means connected between said drum and corresponding valve means for selectively opening and closing each of said valve means as said drum rotates; wherein each of said valve-actuating means comprises: a rocker arm rotatably supported to said valve housing, said arm having a vertical tongue integrally formed thereon; a gasket secured to the undersurface of said rocker arm for direct sequential engagement with said cover-plate passageway, thereby controlling the position of said piston valve within said valve housing; and a spring positioned between said rocker arm and said cover plate, whereby said rocker arm is biased to close said cover-plate passageway to the atmosphere; a drive means for rotating said drum, said drive means being positioned down stream of said inlet port of said valve housing and disposed in said fluid flow channel and being operably connected to said drum, wherein said drive means comprises: an impeller rotatably mounted within said flow channel, the impeller being positioned adjacent said inlet port, whereby fluid flow therethrough rotates said impeller; a drive shaft having said impeller affixed at one end thereof and rotatably mounted within said valve housing; and a drive gear affixed to the opposite end of said drive shaft for direct engagement with said gear train means; and a gear-train means operably connected between said drum and said drive means.