An improved multi-position plug valve is disclosed which greatly facilitates fluid flow control. In the preferred embodiment, the valve is adapted for connection with three individual pipes or conduits, Plug Valves and another main pipe or conduit. The valve includes a rotatable valve plug positioned within a valve body which can be selectively positioned for effecting fluid communication between any selected one or ones of the three individual pipes and the main pipe. Globe ValvesThe present valve is suited for use in a very wide variety of applications, and provides significant fabrication, installation and maintenance savings when compared with equivalent multi-valve systems heretofore required to provide equivalent flow control.WATER POWER CONTROL VALVE A multi-position plug valve, comprising: a valve body having an interior bore and defining three valve ports communicating with said bore, said valve body further defining a main port conmunicating with said interior bore; a valve plug adapted to fit within the interior bore of said valve body for rotation with respect thereto, said valve plug including an upper portion and a depending skirt portion with the interior of said valve plug opening into said main port of said valve body, said skirt portion defining a plurality of plug ports each of which is adapted to provide communication between any selected one of said valve ports and the interior of said valve plug; and operating means connected to the upper portion of said valve plug and extending through said valve body adapted to be rotated for effecting selective rotation of said valve plug within said valve body to provide selective communication between any selected one and any selected ones of said valve ports and said main port, and to isolate said valve ports from said main port; said valve body defining first, second, and third valve ports spaced about the rotational axis of said valve plug, said first and third valve ports being diametrically opposed with respect to the rotational axis, and said second valve port being positioned intermediate said first and third valve ports and generally at right angles thereto, said valve plug defining first, second, third, and fourth plug ports spaced about the rotational axis of said valve plug, said first and fourth plug ports being diametrically opposed with respect to the rotational axis of the valve plug, said second plug port being positioned intermediate said first and fouth plug ports and at right angles thereto, and said third plug port being positioned intermediate said second and fourth plug ports. Thus, a greatly improved multi-position plug valve is disclosed which facilitates efficient and convenient control of fluid flow. Operation of the plug valve permits selective fluid communication between any selected one or ones of the valve ports of the valve body with the main port of the body, thus permitting any desired combination of flow routing. The present valve can be readily employed in place of typical spool and pilot valves, and is suited for use in hydraulic and pneumatic systems, as well as in some types of automatic transmission systems. The valve can further be employed in many other types of diverse applications. The valve is particularly suited for use in sewage, industrial, and petroleum pumping systems, providing more versatile flow control than heretofore known three-way or four-way valves. The present plug valve can be readily fabricated, installed, and maintained, providing both cost and space savings when compared with the typical installation of three, individual isolation valves and a common header.

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