Z641 series pneumatic wedge gate valve with manual is a pneumatic actuator (double cylinder valve, Shandong, and with a shock-absorbing mechanism) and manual and Protection Agency (manual and pneumatic self-locking - manual conversion device) lower bracket next shot gate valve. The valve structure due to the use of double cylinder pneumatic valve Z641F vendors, as compared with the single-cylinder pneumatic valve, the lifting force increases doubled. Valve Co., Ltd. Shandong Everbright valve manufacturer specializing in the production, welcome new and old customers to order our products! Pneumatic valve is a device in the factory manual should indicate the following data: Valve specifications; Model; working pressure; manufacturing standards; body material; Stem material; sealing material; valve shaft packing material; stem sleeve material; internal and external corrosion Material; Operation Starting direction; hoist pressure in the working condition moment;; factory Make revolutions; the date of manufacture; serial number; weight; connecting flange apertures, number of holes, the center of the pitch; the manner shown marked overall length, width and height of the control dimension; valve flow resistance coefficient; effective opening and closing times; valve factory testing of the relevant data and installation, maintenance precautions. Z641F pneumatic valve pneumatic valve _ _ valve manufacturer 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!