We have 2 alternatives for the 26503-1 by GT DEVELOPMENT:
GT Development® is a brand under IMI Group that focuses on the manufacture and distribution of custom on-board products for air management, brake and fuel systems, as well as seat and cab controls of heavy-duty trucks and commercial vehicles. Originally known as the Norgren GT Development, this brand has designed a line of solenoid air valves that can stand up to the rigors of high-temperature, severe-duty applications. This brand also offers a wide variety of dump valves, trailer brakes, fuel caps, pressure protection valves, switches, air valves, and many others. With IMI's Advanced Manufacturing Engineering (AME) capabilities, GT Development products are proven high-performance, reliable, and long-lasting.