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Originally established in 1929 as the General Valve Service Co., founder Joseph Heinen first came up
with the idea to start his own valve company while repairing valves in the oil fields of the Los Angeles
Basin, where he continually encountered valves failing due to seal scoring (or, the scratching of the seal
due to small particulates in the stream flow). Today, the brand offers a full product line of fire-safe plug and diverter valves for a variety of
applications maintained by global aftermarket support