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Pre-tensioned, floating seat bi-directional all-metal hard seal butterfly valve

Note: the technical performance table, installation structure data table, design standard and test standard of this product are the same as those of multi-level hard seal butterfly valve.

DN1200 Pneumatic Butterfly Vapor Suction Check Valve

This pneumatic butterfly type steam pumping check valve is installed in the steam pumping horizontal pipeline leading from the low-pressure steam guide pipe in the turbine, mainly to prevent the steam in the pumping pipeline from backing up in case of accidents, which may cause the turbine to overspeed.
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