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Size shrinkage of gate valve
If the channel diameter in a valve body is different (usually the seat size is smaller than the flange connection size), it is called size shrinkage.
Diameter shrinkage can reduce the size of parts, reduce the force required for opening and closing, and expand the application range of parts. But after the diameter shrinks. The fluid resistance loss becomes greater. Tianjin gate valves
In certain operating conditions in certain sectors, such as oil sector pipelines, size reduction valves are not permitted. On the one hand, this is to reduce the resistance loss of the pipeline, and on the other hand, to avoid the obstruction caused by the shrinkage of the diameter to the mechanical cleaning of the pipeline.