Overhanging upper hand wheel rise and fall of the indicator rod pneumatic valve, gate valve is marked in the promotion state or down state. When the valve is closed, the indicator lever extended in the lowest position; on the contrary, when the gate open, extended indicator lever in the highest position. Namely, the state of the scene based valve opening and closing instructions. Valve Co., Ltd. Shandong Everbright produce such a wide range of application types of valves, reliable, no endoleak, Weifang Z641F pneumatic valve leakage phenomenon, frequent switching is not stuck, rust, the majority of chemical plants, thermal power plants, steel mills , dyeing, food plants the best choice. 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 manufacturers, and fixed rate stability for the people observe and operated from the ground. That Shandong valves, 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! Pneumatic valve, Everbright valve manufacturer, pneumatic valve provided by Valve Co., Ltd. Shandong China Everbright. 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.