国产午夜福利短视频-国产精品刘玥久久一区-亚洲无线一二三四区手机-国产网站视频-成人av黄色-欧美城天堂网址-性色蜜桃臀x66av-免费无码观看的av在线播放-久久国产精品成人片免费-天天噜噜噜噜噜噜-中文不卡视频-人人妻人人爽人人狠狠-四虎成人久久精品无码-久草视频免费看-久久视精品

Pneumatic soft seat wafer butterfly valve has compact structure, easy 90° rotary switch, reliable sealing and long service life. It is widely used in water plants, power plants, steel mills, papermaking, chemical industry, food and other systems for water supply and drainage, as a regulation and cut-off use.

Product model: D671F
Nominal diameter: DN40-DN1000
Material of valve body: ductile iron, 304, 316
Connection: clamping, flanged, lug clamping
Pressure classes: PN1.0mpa, PN1.6mpa
Seat sealing: EPDM: -30℃ ~ 120℃ NBR: -30℃ ~ 80℃ PTFE: -30℃ ~ 140℃ VITON: -30℃ ~ 150℃
Valve plate quality: ductile iron nickel plating, nylon coating, aluminum bronze, 304, 316, 316L, 1.4529, 2507
Stem material: stainless steel 410, 304
Suitable medium: water, liquid, gas, oil, powder, steam, caustic medium.