Pilot operated coolant control valves

An improvement in pilot operated coolant control valves in a manifold assembly for supplying a coolant under pressure, the improvement comprises in combination forming the coolant control valves as removable assemblies positioned within an apertured body member closing said manifold, independent pilot control valves positioned in a pilot valve mounting plate removably secured against said apertured body member, each of said coolant control valve assemblies consisting of a cylindrical valve body apertured inwardly of one end, a pilot valve chamber within said cylindrical valve body, a valve element movably positioned within said pilot valve chamber, a valve seat in said valve body, means for closing one end of said apertured valve body, sealing means on said valve element, a pilot air passageway and a vent air passageway within said cylindrical valve body member communicating with said pilot control valves and the atmosphere respectively, a coolant chamber in said manifold, apertures in said cylindrical valve body communicating with said coolant chamber, a solenoid coil in said pilot control valve for moving a solenoid plunger therein when energized, secondary valve elements on the ends of said solenoid plunger, a pilot air supply chamber within said manifold, means communicating between said pilot control valve and said pilot air supply chamber, oppositely disposed passageways communicating with said pilot air chamber to maintain said valve element closed against said valve seat stopping the flow of coolant when said solenoid coil is de-energized, a spring for moving said plunger to seal said pilot air passageway whereby coolant pressure moves said valve element supplying said coolant to a spray means in communication with said coolant supply valve, an electrical circuit in communication with said solenoid coil for energizing the same.