Current label: Stacked relief valve
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The main factor affecting the sealing performance of hydraulic valves in hydraulic cylinder manufacturers is the impurities in the working fluid. These impurities grind between the sealing elements, causing the valve to leak. Therefore, foreign countries have proposed that hydraulic components of corresponding grades should use filters of corresponding accuracy. They think 5 μ M oil pump sealing element, if the filter precision is 3 / μ M's