Direction of the valve opening and closing movement of the operating mechanism 4.1 Z641F pneumatic valve operation of pneumatic valve manufacturers, all should be clockwise closing. 4.2 As the pipe network in the pneumatic valve pneumatic valve, often manually opening and closing, opening and closing rotation should not be too Weifang valve is large diameter valves should be transferred within 200-600. 4.3 In order to facilitate opening and closing operation of a person under the pressure of the situation plumber pneumatic valve manufacturer, the maximum torque should open and close 240N-m. 4.4 pneumatic valve opening and closing operation should end mortise and tenon, and the size standard, and facing the ground, so that people can be directly operated from the ground. With a wheel valve does not apply to underground pipe network. Pneumatic valve Classification [main types of pneumatic valves way] 1) pneumatic regulating valve V-2) O-off valve pneumatic 3) of torque type cylinder valve 4) Electromagnetic Diaphragm 5) pneumatic diaphragm program straight 6) electric valve Shandong Everbright Valve Co. produced a wide range of applications of this type of valve, reliable quality, no internal leakage, leakage phenomenon, frequent switching is not stuck, rust, the majority of chemical plants, thermal power plants, steel mills, printing and dyeing, food the best choice for plants. Z641F manufacturer of pneumatic valve, pneumatic valve, valve type Everbright Everbright Limited provided by Shandong valve. Valve Co., Ltd. Shandong China Everbright (www.sdgdfm.com) strong, credible, Shandong Weifang ball industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Everbright valve into the brilliant and you work for a better future!