Kelso Technologies Inc. designs, engineers, markets, produces and distributes various proprietary pressure relief valves in the United States. It offers rail transport equipment, such as pressure relief, vacuum relief, and bottom outlet valves; pressure cars; pressure relief; one-bolt manway; emergency response kit; pressure differential; service bulletins; and installation manual updates. The company also offers fueling valves; and equipment for tank trailers. Its products are used in rail, military, oil and gas, mining exploration, marine, and other heavy equipment industries. The company was formerly known as Kelso Resources Ltd. and changed its name to Kelso Technologies Inc. in July 1994. Kelso Technologies Inc. was incorporated in 1987 and is headquartered in West Kelowna, Canada.