When performing thermal tightening, is it necessary to tighten the gland of the wash water angle valve at the high-pressure area as well?
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This post was last edited by fjhuyuyang on 2011-5-27 at 18:39. Bolts in high-pressure areas should be tightened while they are hot; it is also necessary to tighten the gland of the small angle valve used for flushing water in high-pressure areas, in order to prevent leaks at those locations. . .
It’s best if it’s conditionally tight; if it’s not tight, it’s not a big problem either, as the temperature is lower than that of the pipe bolts.
Reply 1# Blade: The main purpose of thermally tightening the bolts of high-voltage equipment is to prevent the bolts on the sealing surface from deforming excessively when the temperature rises, which could lead to leakage at the sealing surface. For example, high-pressure wash water valves are recommended to be installed in reverse orientation during installation; that is, the valve head is under pressure while the gland bolts are not subjected to direct stress or heat, so there is no need to tighten them by heating.