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Telescopic butterfly valve Overview: Telescopic butterfly valve for temperature ≤ 80 ° C, the nominal pressure ≤ 1.6MPa food, medicine, chemicals, petroleum, electricity, textile, paper and other water supply and drainage, gas pipeline for regulating the role of flow and interception of the media , With the compensation pipeline thermal expansion and contraction functions. Retractable butterfly valve main features: 1. Innovative design, reasonable, unique structure, light weight, easy operation, quick opening and closing. 2. Retractable butterfly valve in addition to the role of regulation and closure, compensation for pipe temperature difference caused by thermal expansion and contraction functions, but also for the installation of replacement, maintenance of the valve to provide convenience. 3. Sealing parts can be adjusted replacement, sealing and reliable performance.