As a result of the double cylinder valve structure, as compared with the single-cylinder type pneumatic valve, the lifting force increases doubled. This solves some of the valve body the death of a single wedge gate valve pneumatic cylinder gas untapped fundamental ills. Moreover, since the valve includes a buffer mechanism, can effectively slow down when the light valve is closed, the piston downward impact caused by the wear of the sealing surface and the valve dray valve sealing surface, as well as temperature and pressure valves, but also to avoid the shutter plate the phenomenon of death. Because of its advanced technology, reliable performance, easy Weifang switching valve operation and maintenance, has been petroleum, chemical, metallurgy, electric power, shipping and other departments as pipeline gas, liquid medium switching device and widely used. The main performance parameters Nominal pressure: 1.6,2.5.4.0.6.4MPa temperature: -29 ~ 425 ℃ (steel) -40 ~ + 550 ℃ (stainless steel) Nominal diameter: DN50 ~ 800mm Body material: 304.306.316L.WCB .HT200 connecting flanges: JB / T79. GB913. HG20592 Medium: air, water, steam, oil and nitric acid, acetic acid and other corrosive fluid mode of action: cut-off, adjustment, manual control supply voltage: 220VAC, 24VAC input signal: 4 ~ 20mA / 1 ~ 5VDC0 ~ 20mA / 0 ~ 10VDC 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 at better management of available stainless steel case, otherwise the painting steel valve, do not use aluminum leather production; ③ direct drive needle eye-catching stainless steel valves are secure, when opening and closing adjustment After accurate, should rivet locked. Shandong valves, Shandong Everbright valves, valve by valve Shandong China Everbright Limited. Shandong valves, Shandong Everbright Valves Valve Co., Ltd. Shandong China Everbright (www.sdgdfm.com) this year introduced a new upgrade, the above picture is for reference only, please call the telephone or pictures on this page, for the latest information Contact: Manager Ma.