The valve is due to the use of double cylinder structure compared with the single cylinder 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. Further, since the valve includes a buffer mechanism, can effectively slow down when the light valve is closed, due to the impact caused by the piston down the valve sealing surface and the valve body dray wear the sealing surface, while Z641F pneumatic valve supplier, the gate can be avoided board dead phenomenon. Department is equipped with a pneumatic cylinder head - manual conversion devices. Converting the handle clockwise to mention "pneumatic" positioning hole location, the valve is pneumatically operated state; on the contrary, it is converted to mention the handle counterclockwise to the "manual" is scheduled for hole positioning the valve, the valve can be manually operated. Change the direction opposite the handle with a bevel gear. Valve operation manual hand wheel rotation and manual valves, like the ordinary, that turned off clockwise, counterclockwise into the open. With bevel gears in reverse. Valve Co., Ltd. Shandong China Everbright production of such types of valves wide range of applications, 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, the best choice of food plants. Because of its advanced technology, reliable performance Z641F pneumatic valve price, the operating switch and easy maintenance, 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: 1.6,2.5.4.0.6.4MPa Operating 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 supplier, Everbright valve manufacturer (certified), gate valves Everbright Limited provided by Shandong. Valve Co., Ltd. Shandong China Everbright (www.sdgdfm.com) Shandong Weifang, ball leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Everbright valve leadership with the staff warmly welcome all inquiries negotiations to create a better future for China Everbright valve.