Primary and secondary check valve group of ultra-high pressure water generator

The invention relates to a primary and secondary check valve group of an ultra-high pressure water generator. The check valve group comprises an ultra-high pressure water outlet joint body, a water outlet check valve, a water inlet check valve, a left-hand thread pipe pad, a connecting nut, an ultra-high pressure tee joint body, an ultra-high pressure water tank cylinder, a plunger, a water inletjoint body, a flared water inlet nut, a flared water inlet pipe sleeve, a low-pressure water inlet copper pipe and the like. In the invention, a two-grade dual sealing way is adopted, so that the positive conduction and reverse stop of ultra-high pressure water under an ultra-high pressure can be guaranteed effectively; and the opening and closing actions of a valve core are smooth and quick and the time response speed is high, so that the building of the ultra-high pressure of the whole system can be guaranteed and relatively high volume efficiency and relatively high power utilization rate of an ultra-high pressure