Signal butterfly valve is suitable for petroleum, chemical, food, medicine, pharmaceutical, hydropower, ship, water supply and drainage, smelting, energy and other system pipelines, can be used in a variety of corrosive, non-corrosive gas, liquid, semi-liquid and solid powder pipelines and containers as regulating and intercepting equipment. It is especially widely used in high-rise construction fire fighting system and other pipeline systems that need to display the status of valve switch.

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