Kelso Technologies Inc. develops, produces, and distributes proprietary equipment used in transportation applications in the United States and Canada. The company offers railway equipment, such as bottom outlet, pressure relief, vacuum relief, and check valves, as well as one-bolt manways, pressure cars, pressure differential parts, tank gauges, laboratory test equipment, and wheel cleaners; emergency response kits; and fueling valves. It also provides trucking components, including one-bolt manways and pressure/vacuum safety valves for tank trailers; and suspension systems for fleet vehicles to access wilderness worksites. 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 Surrey, Canada.