午夜AⅤ不卡网站在线播放_尤物国产微拍精品一区91_大香蕉一区二区啪_成人精品福利午夜无码_你懂的中文字幕在线看_亚洲户外露脸在线观看_毛片大全网站_黄色激情小说另类av_色偷偷色噜噜狠狠网站种合_国产91午夜福利片

D973H/Y Electric wafer flange hard seal butterfly valve product description

D973H/Y Electric wafer flange hard seal butterfly valve product features

1, the butterfly valve structure is simple, compact, light weight, easy to install and disassemble, easy maintenance; 
2, the butterfly valve with stainless steel "U" ring, with a certain flexibility in both high temperature and low temperature, All have excellent sealing; 
3, the three-dimensional eccentricity of the butterfly valve, after rigorous calculations, "U" type ring and disc almost no friction, long service life 
4, The sealing surface of the plate is cladded with cobalt-based cemented carbide, and the sealing surface is resistant to abrasion and long service life. 
5, The butterfly valve has a unique structure and the "switch" can be completed by only rotating the valve stem by 90 °. Operation flexibility, convenience, effort, not affected by the level of media pressure, sealing performance and reliable; 
6, high temperature, low temperature, corrosion resistance.

D973H/Y Electric wafer flange hard seal butterfly valve main shape and connection dimensions