Wafer butterfly valve signal applied to the fire system control valve, normally open occasion requires, when the valve is open or closed to the specified location, signal device on the valve can be signaled to the Fire Testing Center can open or close the butterfly exhibit, Close the valve to prevent misuse and the impact sprinkler function. Product Features 1. Compact and lightweight insulation valve, easy installation and maintenance, and can be installed anywhere on the threaded forged steel valve 2. Simple structure, compact 90 ° operation open and close rapidly 3. cryogenic valve operating torque, energy light 4. completely sealed, gas leak test zero zero total 5. Choose different pieces of material, suitable for a variety of media 6. Flow curve tending to straight line, adjust the number of tests the performance of a good opening and closing as many as 7 million times, long life 8. Where the use of gate valves, globe valves, cocks, valves and hose diaphragm pipeline valve, especially on the high-rise building fire safety systems and need to show the status of the pipeline system valve switch, can be replaced with the valve. The butterfly as a piping system used to implement off and flow control components have been in many fields of petroleum, chemical, metallurgy, water, electricity and very widely used. Has been known butterfly technique, seal forms enclosed structure, sealing material for rubber, PTFE and so on. Due to restrictions structural characteristics, suitable for high temperature, high pressure and corrosion resistance, abrasion resistance and other industries. Flange Forged Steel Gate Valve Port _ Ming (certified) _ gate valve is provided by the Hong Kong Science and Technology Co., Ltd., Dongguan Ming. Port Valve Co., Ltd., Dongguan Ming (www.gdmgfm.com) is Dongguan, butterfly leaders, over the years, the company implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In the next port of the valve leading the staff warmly welcome all inquiries negotiations to create the next port of the valve a better future.