What Are the Causes of the Failure That 315 Tons, Hydraulic Press Cartridge Valve Cannot Be Closed and Maintained?

1.315 Tons of Hydraulic Valve Body Or Integration Block Body Internal Casting Quality (Such as Air Hole, Crack, Shrinkage, Etc.) Is Not Good, Causing Leakage and Integration Block Joint Surface Leakage.

2. the O-Ring Seal on 315 Tons Hydraulic Valve Sets of Outer round Cylinder Is Invalid.

3. The Four-Column Hydraulic Press Valve Core Does Not Fit with the Valve Sleeve Cone, Resulting in Internal Leakage between Chamber A and Chamber B.

4. When Using the Solenoid Valve as the Plug-in Pilot Valve to Maintain the Pressure, the Liquid Control One-Way Valve Solenoid Valve Cannot Be Well Closed Due to the Inevitable Internal Leakage of the Sliding Valve Solenoid Valve.

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