Description:Cat® Water Actuator Valve is used for opening and closing a valve. The type of valve used will depend on the size of the pipe, the overall pressure that the system operates, the flowing media, process conditions, and other factors. The heater control valve is used to allow hot coolant into the heater core so that the heater can operate. If the heater does not have hot coolant the AC system will not be able to blow hot air, and the front defroster may not work. Cat® Parts are designed and tested to deliver the quality you expect from your equipment.Application:Cat® Water Actuator Valve are used in air conditioning and heater lines from the operator cab of Cat® Machines. Consult your owner's manual or contact your local Cat® Dealer for more information.