Why can’t a normally open stop valve be closed completely?
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Why can’t a valve that remains open be closed permanently, and how can this be avoided? Is there any good solution? Thank you
Internal leakage is a phenomenon that exists in most valves and is inevitable
Internal leakage is an inevitable phenomenon for most valves
Prolonged scouring, corrosion, cavitation, and other factors acting on the valve core and valve seat will inevitably lead to leakage. Maintenance should be carried out regularly.
Internal leakage is an inevitable issue with most valves; regular maintenance and replacement are necessary, and the choice of material is also important.
Quality issues with the valves, or impurities in the materials.