日韩欧美一二区_亚洲无码 鲁 鲁 更健康_国产美女一区三区_中文欧美日韩无线码_中文字幕亚洲激情_国产成人精品男人的天堂538_毛片影院在线观看_很黄很湿18以免费视频_国产乱子伦精品中文_过程网站在线观看黄

The new AT/GT series pneumatic actuators are adopted for the O-type cut off ball valve, and the structure of the utility model has double action and single action (spring return), and the pinion and rack type structure is adopted to drive, which makes the performance more safe and reliable.
Large diameter valve using AW series pneumatic actuator, fork type structure transmission, reasonable structure, large output torque.Pneumatic O-type shut-off ball valve is equipped with one-second shut-off ball valve and explosion-proof device, which can be cut off by gas.It is composed of ball valves and single acting piston pneumatic actuators, widely used in natural gas, oil products, chemical industry, metallurgy, papermaking, mining, printing and dyeing, bio-pharmaceutical, daily-use chemical industry, food and beverage, water treatment and air treatment and other industries fluid cut off control, and automatic pneumatic instrument supporting use.