High performance butterfly valve, for the eccentric construction of the disc and the sealing ring ,the valve has a compact construction, small volume, light weight, reliable sealing, long service life and other feature, and it has both regulating and shut-off function. This kind of valve is widely used for cutting off the medium such as air ,water, sewage, oil, liquid, gas, natural gas and steam or controlling the pressure and flow in metallurgy, chemical industry, electric power, textile, food, medicine, paper and other departments of industrial, municipal engineering, water plant and other pipelines. This series products are divided into PTFE seat and PTFE + metal seat sealing constructions, both of them are zero leakage in pressure testing. The flow characteristic of this kind of valve is approximate equal percentage.More...
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