Product Description High-flow hydraulic one-way valve is usually used to block the high-pressure liquid in the lower cylinder cavity (piston cavity) of the large diameter cylinder of the large hydraulic support of the coal mine, so that the rack plays an auxiliary role: when the upper cavity of the column is introduced liquid, at the same time, hydraulically controlled liquid is fed, the lower cavity of the column is unlocked, so that the column is lowered. And by adjusting the opening pressure of the safety valve installed on the hydraulically controlled one-way valve, the working resistance of the hydraulic bracket is in the nominal value. Specifications Rated pressure: 50MPa Rated flow rate: 1000L/min Interface travel: interface in table or user needs interface material: carbon/stainless steel/Cr18Ni9