SD641X, SD643H pneumatic telescopic butterfly Industrial Valves and ball valve flange type difference is large, we can distinguish from the function to go up and ball valve and pneumatic telescopic butterfly valve with flange SD641X, SD643H different effects, from ball valve and SD641X, SD643H pneumatic telescopic butterfly valve flange type structures. 【 Functional difference between 】 SD641X/SD643H pneumatic pipe flange telescopic butterfly valve with automatic compensation function of heat bilges cold shrink convenient loading and unloading, use at temperature below 425 ℃, nominal pressure in 1. Under 6 mpa petroleum, chemical, electric power, papermaking, water supply and drainage and municipal construction and other industries for adjusting traffic and load on pipe cut-off body the best device. Ball valve and pneumatic telescopic butterfly valve with flange SD641X, SD643H difference is bigger, ball valve, 球阀) Opening and closing is a sphere, driven by the valve stem, and for ball valve axis rotate 90 & deg; Open or closed. Can also be used on regulation and control of fluid, mainly used for cutting in line, distribution, and change the flow direction of medium, good sealing, convenient operation, opening and closing fast, simple structure, small volume, small resistance, light weight, etc. 【 Physical difference between 】 【 SD641X, SD643H pneumatic telescopic butterfly valve with flange ball valve Summary 】 SD641X, SD643H pneumatic flange telescopic butterfly valve and ball valve and the use function, the difference is very different in application, in the selection of a certain need to pay special attention to diameter, pressure, material and use of media, whether at design time, or in the purchase, must be in strict accordance with the relevant technical requirements.
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