... voltage controlled Zhengzhou Gou's New Quenching machine tool For Valve, Cylinder Main configuration:1, CNC system control;2, ... motor drive screw, screw the top down;7, Solenoid valve control water;8, With a heating device control plug. ... reduce the transport, saving manpower, increase production efficiency. 6) multi-usage. Complete quenching, annealing, tempering, normalizing, quenching and other ...