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Kelso provides components for rail tank cars and trucking tank trailers. The company is an AAR-certified supplier of high-performance rail tank car equipment *MADE IN THE USA* for the safe transportation of commodities. Located near Dallas, Texas, Kelso designs and sells pressure relief valves, vacuum relief valves, pressure car relief valves, angle valves and more. Kelso also supplies truck tanker valves and a fast filling fuel valve system. Contact us today for your valve needs!