Movable valve operating mechanism 4.1 pneumatic valve opening and closing direction of the operation, all should be clockwise closing. 4.2 As the pipe network in the pneumatic valve, often manually opening and closing, 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, in the plumber pressure conditions, the steel valve manufacturers, the maximum torque should open and close 240N-m. 4.4 pneumatic valves open and close operation should end mortise and tenon, and the size standard, valves, and facing the ground so that people can be directly manipulated from the ground. With a wheel valve does not apply to underground pipe network. Consistent shift gearbox 3.1 external enclosure materials and corrosion requirements and body principles. 3.2 Measures should be sealed box after box assembly can withstand immersion three meters of water conditions. Opening and closing stopper 3.3 box on the adjustment nut should be in cabinets or located outside the box, but special tools need to work. 3.4 Drive structural design is reasonable, open and close valves can only drive shaft rotation, as not to traverse up and down, cast steel valves, bite moderate transmission parts, does not produce open and close with a load when the separation skid. 3.5 Transmission Box Office with the valve shaft seal leak can not be connected to the whole, or else there should be a reliable anti-leakage measures strings. 3.6 cabinets without debris, Shandong stainless steel valves, gear grease should bite protection. Pneumatic valve structural features 1, the valve consists of body, valve cover, gate, stem, seals, double cylinder and piston rod, partitions along with buffering mechanism, manual, pneumatic - manual conversion means and part of the bonnet packing devices. 2, the upper end of the piston stroke of the line to be on top of the back to the hearing so that the sender; the lower end of the piston stroke can be the top row to the hearing at the next time, so that the sender, as the valve opening and closing the information in the central operations room simulations performed on the dashboard display. Valve Manufacturers | Everbright Z641F pneumatic valve (Online) | Valve Co., Ltd. by Shandong Everbright valve. Shandong Everbright Valve Co., Ltd. (www.sdgdfm.com) adhere to the "people-oriented" business philosophy, with a professional staff, and strive to provide the best products and services to contribute to society, and to welcome new and old customers throughout the visit and sincere cooperation for a better future. Everbright valve - a reliable friend, Company Address: Cravens District, Weifang City, Shandong Province Bao Tong Street North Makers Industrial Park, Contact: Manager Ma.