国产全肉乱妇杂乱视频,久久日产一线二线三线品,无套内谢少妇毛片A片樱花,日本激情特黄三级激情视频

Home / Product

Product

Rubber

Rubber sealed gas gate valve

Nominal pressure:≥PN1.6
Nominal diameter:DN40~400mm

Application characteristics

It can only be fully opened and fully closed, and can not be adjusted and throttled. The dark rod elastic seat seal gate valve uses the whole valve package to produce deformation compensation to achieve a good sealing effect, which overcomes the phenomenon of poor seal, leakage medium and rust of the general gate valve, and more effectively saves installation space. The valve plate is fully coated and fully vulcanized with oil and gas resistant NBR synthetic rubber due to the compression resilience of the rubber, the double-layer bonding vulcanization process and the robust valve plate design, these characteristics give the valve excellent durability. The triple-safe stem seal system can be replaced with pressure, ultra-high strength stem and comprehensive anti-corrosion properties ensure unmatched valve reliability.


Elastic seat seal

The main sealing part is the integral ram covered by rubber, which produces a small amount of adaptive elastic deformation under the action of operating force and medium pressure, and forms an excellent sealing effect with the precision cast valve seat.

      <center id="vudui"></center>

      <center id="vudui"></center>

      • <u id="vudui"><listing id="vudui"><pre id="vudui"></pre></listing></u>
      • 主站蜘蛛池模板: 欧美牲交作爱在线aav| 日本高清不卡在线观看播放| 少女视频哔哩哔哩免费| 婚后1v1啪啪做H高甜| 欧美黑人肉体狂欢大派对| 玉山县| 中文字幕AV无码一区二区三区| 日本无码免费爽快片| 化德县| 盐山县| 好爽毛片一区二区三区**| 小娇妻初尝禁果H| 高H粗口调教羞辱SM文女王动画| 塘沽区| 青草青在线视频在线观看| 日本在线高清不卡免费播放| 欧美一本大道高清视频| 欧美精品99久久久**| 康定县| 成全视频在线观看免费高清| 日本三级香港三级人妇迅雷| 欧美牲交a欧美牲交aⅴ免费| 丰满少妇乱A片无码| 亚洲国产成人无码AV在线| 国产午夜精品一区二区三区嫩草| 日本无码sm凌虐视频| 日本高清道一区二区免费| 河北区| 普安县| 欧美曰本—本道免费无码dvd | 东丰县| 成全电影大全在线观看第二季| 申扎县| 日本高清免费视频www色| 日韩精品极品视频在线观看免费| 山外人精品影院| 栾城县| 国产亚洲精品久久久久久快乐8| 亚洲精品国**自产在线观看蜜桃| 华安县| 莱芜市|