water seal gate valves structure features and use: 1. The middle flange bolt connection, pipe ends for flange connection or butt welding. Stuffing box is designed for water seal structure. It has to do with 0. 6 to 1. 6 mpa water filling material. Small friction, good sealing, system and the atmosphere can be isolated, ensure good air tightness. 3, the opening and closing department adopts double plate elastic sealing, opening and closing is convenient, reliable sealing, good performance. 4. Stem through quenching tempering processing, surface nitriding treatment, with good corrosion resistance, scratch resistance and abrasion resistance. 5, the structure is simple, compact and reasonable, easy maintenance, long service life and good appearance. 6, work must be in the fully open or close the valve position, cannot be used as a control valve.

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