Consistent speed gearbox 3.1 external enclosure materials and corrosion requirements and body principles. 3.2 should be sealed box measures Z641F pneumatic valve manufacturers, box assembly can withstand immersion after three meters of water conditions. Pneumatic valve opening and closing stopper 3.3 box on the adjustment nut should be located in cabinets or pneumatic valve box Z641F outside vendors, but need special tools available jobs. 3.4 Drive structural design is reasonable, open and close valves can only drive shaft rotates Shandong valves, as not to traverse up and down, bite moderate transmission parts, does not produce open and close with a load when the separation skid. 3.5 Transmission box with the valve shaft seal leak can not be connected to the whole, otherwise the string should be a reliable anti-leakage measures. 3.6 cabinets no debris, grease should bite protection gear. 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. Weifang Z641F _ Everbright valve pneumatic valve manufacturers (certified) _ pneumatic valve provided by Shandong China Everbright Limited valve. 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.