HP ON/OFF VALVE @On/off Valve designed by the USA; @Air Actuated valve can carry out high pressure water sudden open and close, consumedly reduced Water back; @CNC assistance function to carry out the automatic control of the high pressure water; @Holding pressure adjustable, reduce the time of piercing; @Act intelligent credibility. CUTTING HEAD @Imported DP2000 style cutting head @The American type Orifice Assembly; @From corrected function to reduce time of assemble; @Spare parts replaces very conveniently.