日本人真人姓交大视频_www精品视频_91看片网页_国产一级美女_三级男人添奶爽爽爽视频_av在线中文在线

Pneumatic valve ( Pneumatic valve ) is the use of compressed air energy, drive pneumatic gear driving, thereby opening and closing the valve, or regulating valve opening valve, comprising a pneumatic device and the valve body. Imports of pneumatic device ( pneumatic actuator ) is divided into single and double action, pneumatic actuators generally need pneumatic triple pieces ( air filters, pressure reducing valve, oil mist ), can be selected by a limit switch and a locator.

Pneumatic valve actuator disc, fork and a connecting pin components are made of alloy steel material, more resistant to abrasion, and the connecting parts are used in special material bushing, no metal contact between the switching frequency, service life can reach more than 1000000 times. But after running a small gas consumption, therefore in the initial and running cost are advantages. Quick response, the fastest response time could be as large as 3seconds to switch.