雙法蘭蝶閥double flanged butterfly valve

該閥門適用于化工，石油，機械等行業(yè)。

The valve is suitable for chemical, petroleum, machinery and other industries.

特點（characteristic）：

結(jié)構(gòu)簡單，維修方便，阻力小，操作簡單，密封性能好，耐腐蝕，耐高溫，使用壽命長，易安裝，安裝時不受介質(zhì)的流向限制。

Simple structure, convenient maintenance, small resistance, simple operation, good sealing performance, corrosion resistance, high temperature resistant, long service life, easy installation, installation is not affected by medium flow restrictions.

法蘭能適用GB,DIN,JIS多個標(biāo)準(zhǔn)的管道連接，適用的介質(zhì)有水，蒸汽，粉體。

More than flange can apply to GB, DIN, JIS standard pipe connection, the applicable medium is water, steam, powder.

工作原理和結(jié)構(gòu)說明（The working principle and structure）：

本閥門主要由閥體，閥板，閥座，閥桿等零件組成。

This valve is mainly composed of body, disc, valve seat, valve stem and other parts.

本閥門依靠氣動執(zhí)行器，轉(zhuǎn)動閥桿，使閥桿帶動閥板在介質(zhì)里作旋轉(zhuǎn)動作，達到調(diào)節(jié)流速的目的。

This depend on the pneumatic valve actuator, turn the valve stem, the stem drive disc spins in the medium, to achieve the purpose of adjusting flow rate.