Moving the valve operating mechanism 4.1 operating pneumatic valves opening and closing direction, and all should be clockwise closing. 4.2 As the pipe network in the pneumatic valve, often manually opening Weifang valve, opening and closing rotation should not be too much, that 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 plumber pressure conditions, the maximum torque should open and close 240N-m. 4.4 pneumatic valve opening and closing operation should end mortise and tenon Z641F pneumatic valve price, 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 opening and closing levels of the display panel ① pneumatic valve opening and closing degree of scale line should be cast in the gearbox cover or change the direction of the display after the disc casing, all for the ground wire brush on the phosphor scale to show striking ; ② direct needle plate material in the better management of available stainless steel case, otherwise the painting of steel, do not use aluminum leather production; ③ direct drive needle eye-catching, stable fixation, accurate adjustment once the opening and closing, should be rivets locked. Because of its advanced technology, reliable performance, easy operation and maintenance switch has been petroleum, chemical, metallurgy, electric power, shipping and other departments as pipeline gas, liquid medium switchgear and widely used. The main performance parameters Nominal pressure: 1.6 Gate, 2.5.4.0.6.4MPa Temperature: -29 ~ 425 ℃ (steel) -40 ~ + 550 ℃ (stainless steel) Nominal diameter: DN50 ~ 800mm Body material: 304.306.316L. WCB.HT200 Flange: JB / T79. GB913. HG20592 Applicable medium: air, water, steam, oil and nitric acid, acetic acid and other corrosive fluid mode of action: cut-off, adjustable, manual control supply voltage: 220VAC, 24VAC input signal: 4 ~ 20mA / 1 ~ 5VDC 0 ~ 20mA / 0 ~ 10VDC Z641F pneumatic valve manufacturers, 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!