Only clear specifications, type, working pressure of pneumatic valve procurement practices to meet the procurement requirements in the current economic environment, market is imperfect. Because the pneumatic valve manufacturers under competitive products for the respective pneumatic valves are unified design concept, with different innovations, they formed their own company standards and product personality. Therefore, when the pneumatic valve procurement more detailed technical requirements, valve manufacturers, coordinating with manufacturers to reach a consensus, as an annex to the pneumatic valve procurement contract is necessary. In order to meet users to achieve automatic operation, the company in addition to the supply of the product, also available separately including stents, including the cylinder block, helping users to the existing wide range of manual valve to transform part of the cylinder actuator manual valve body mounted on a large cover, the valve manufacturer, can constitute a pneumatic cylinder - manual dual gate. Because of its advanced technology, reliable performance, easy valve vendors, operation and maintenance of the switching valve has been petroleum, chemical, metallurgy, electric power, shipping and other departments as pipeline gas, liquid medium switching device and widely used. 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. Shandong Everbright valve (Figure) | valve manufacturers | Valve Co., Ltd. by Shandong Everbright valve. Shandong Everbright Valve Co., Ltd. (www.sdgdfm.com) located in Weifang City, Shandong Province, Cravens District Bao Tong Street North Makers Industrial Park. Scraps and development in the wave of market economy, the current Everbright valve has a high profile in the ball, and enjoys a good reputation. Everbright valve made whole network business alliance certification, marking our service and management level has reached a new height. Everbright valve staff willing to work with all people of insight and common development, for a better future.