Heater valves control the flow of water through the heater core and therefore control the amount of heat introduced into the cab space of a truck. MEI Airsource offers many different types of heater valves including air operated heater valves, cable operated heater valves, electric operated heater valves, manual operated heater valves and vacuum controlled heater valves.
Many different styles of universal heater valves can be retrofitted into vehicles when needed. However MEI Airsource, AC Delco and Motorcraft make many direct replacement of original equipment heater valves. The correct heater valve can be found for your need by lookup in the application guide or by cross reference of the original maker's part number.