In the case of a Wedge Type disc, in high-temperature and high-pressure environments, there can be instances where the disc becomes stuck in the body seat due to thermal expansion or internal pressure while the valve is closed, rendering it inoperable. To prevent such occurrences, in recent times, in power plants,Parallel Gate Valve is primarily used in high-temperature and high-pressure pipelines for fluid isolation purposes. It is generally employed in pipelines where urgent or frequent opening and closing operations are not critical.
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