Electric telescopic butterfly valve is suitable for regulating flow and intercepting media on water supply and drainage, gas pipelines in food, chemical, petroleum, power, textile, papermaking and other industries with temperature ≤ 80 ℃ and nominal pressure ≤ 1.6MPa. It has the function of compensating for pipeline thermal expansion and contraction. Its main features are as follows: reasonable design, structure, light weight, easy operation, and fast opening and closing; In addition to regulating and intercepting the flow, compensating for the thermal expansion and contraction caused by pipeline temperature differences, the telescopic butterfly valve can also provide convenience for valve installation, replacement, and maintenance. The sealing part can be adjusted and replaced, and the sealing performance is good< br/>

Manufacturing standards:

Design standards: GB/T12238-1989

Flange connection size: GB/T9113.1-2000； GB/T9113.2-2000； GB/T9115.1-2000； GB/T9115.2-2000

Pressure test: GB/T13927-1992； JB/T9092-1999