欧美A级毛欧美一级A大片视频|国产亚洲精品亚我不卡电影院|亚洲成AV人片在线观看无码|日韩三极片一区二区三区在线播放|在线观看免费人成视频播放|色哟哟国产精品免费观看,日韩毛片免费看九九久久精品国产_欧美线人一区二区三区_欧美精品午夜久久久伊人_日韩欧美人妻一区二区三区_国产不卡视频一区二区在线观看_国产日韩精品亚洲二区视频 ,四川少妇搡BBW搡BBBB,少妇厨房愉情理伦BD在线观看,无套内谢的新婚少妇国语播放,少妇AAA级久久久无码精品片,丰满少妇被猛烈高清播放,熟妇女人妻丰满少妇中文字幕,东北少妇不戴套对白第一次,四川少妇BBW搡BBBB槡BBBB,少妇荡乳情欲办公室456视频 ,安徽妇搡BBBB搡BBBB,四川少妇BBB凸凸凸BBB,另类老妇性BBWBBW,四个熟妇搡BBBB搡BBBB,四川少妇BBW搡BBBB槡BBBB,欧美BBBWBBWBBWBBW,四川少妇搡BBW搡BBBB,老太奶性BBWBBW免费看,妖小槡BBBB槡BBBB槡

The plug valve is an indispensable and important component to connect the high pressure manifold during the cementing and fracturing operation of the oil field. It is also used with similar high pressure liquid control.The product is compact, easy maintenance, small torque, open quickly, operation effort, cementing, fracturing manifold is the best valve.
Working principle and structure characteristic:
■ plug valve mainly by the valve body, hand wheel, plunger and other components.
■ Plug inlet and outlet are 1502 by the form of connection (also can be customized according to customer demand), the valve body and the liner for the cylindrical tie between, and through the lining of the outer ring inlaid into the seal seal.
■ liner and plunger for the cylindrical metal with the seal, which is characterized by high precision, reliable sealing.
■ Note: 15000psi high pressure, but also easier to open or close the valve.