1.1 General Requirements pneumatic valve specifications and categories, shall meet the requirements piping design documents. 1.2 pneumatic valve models should be specified in accordance with the requirements of GB number. If the enterprise standards, instructions should indicate models. 1.3 pneumatic valve job pressure ≥ pipeline working pressure, without affecting the price of the premise, the valve can withstand working pressure should be greater than the working pressure of the pipeline actual pneumatic valve; pneumatic valve is closed on either side of situations should be able to withstand 1.1 times the value of the working pressure valve without leakage; under the valve open position, the valve should be able to withstand twice the working pressure valve requirements. 1.4 pneumatic valve manufacturing standards, should explain the basis of the national standard code, if the file should be attached to business enterprise standards, procurement contract. If the pneumatic valve buried deeper, the operating mechanism and display the distance from the ground ≥1.5m, pole should have added facilities Z641F pneumatic valve vendors, and fixed rate stability for the people observe and operated from the ground. That is, the pipe network in the valve opening and closing operation, should not go down operations. Valve Co., Ltd. Shandong Everbright valve manufacturer specializing in the production, welcome new and old customers to order our products! Consistent speed 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 need special tools available jobs. 3.4 Drive structural design is reasonable offer Z641F pneumatic valve, open and close valves can only drive shaft rotates, it does not move up and down Z641F pneumatic valve manufacturers, valve bite moderate transmission parts, does not produce the separation skid with a load hoist. 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. Weifang valve | valve manufacturers Everbright (certified) | gate valve provided by Shandong China Everbright Limited. 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.