Butterfly is reciprocating rotary disc hoist about 90 ° to open, close or adjust a valve medium flow. Butterfly not only simple in structure, small size, light weight, material consumption province, small installation size, small drive torque, easy operation, fast Tianjin Tanggu Valve Group, and also at the same time has a good flow regulation and closed sealing characteristics Tianjin First Valve Factory, is one of the fastest growing valve varieties last decade of development. Butterfly valve is widely used. Variety and quantity of its use continues to expand, and to high temperature, high pressure, large-diameter, high tightness, long life, excellent regulation characteristics, as well as the development of a multifunctional valve. Its reliability and other performance indicators have reached a high level. 1), the installation location, height, and export orientation must meet the design requirements, the connection should be firmly tight. Butterfly Works Figure 2), is installed on all types of pipe insulation manual valve valve plant in Tianjin Tanggu, shall handle down. 3), must be visually checked before the valve is installed, the valve plate should comply with the provisions of the current national standard GB 12220 "Universal Valve logo." For working pressure greater than 1.0 MPa and the role played off the main pipe valves should be installed before the strength and rigorous performance test valve, passing behind the prospective use. Strength test, the test pressure is 1.5 times the nominal duration of not less than 5min, the valve housing, packing should be no leakage as qualified. Tightness test, the test pressure of 1.1 times the nominal; test pressure in the test duration should be consistent with GB 50243 standards, with no leakage valve sealing surface is qualified. Tianjin Port gassy and ultra valve _ Ming valve (certified) _ valve valve 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.