Electrically adjustable butterfly valves are electric and electric control valve of a species. Connections are: flanged and wafer type. Industrial automation and control is an important execution units. Electric control valve installation points two analyzes: the installation location, altitude, direction and export must meet the design requirements, pay attention to the direction of flow of the medium should be consistent with the direction of the arrow on the valve body, the connection should be firmly tight. Electric control valve must be visually checked before installation, the valve plate should comply with existing national standards, "Universal Valve logo" GB12220's. For working pressure greater than 1.0MPa and the role played off valves on the main pipe before installing the strength and rigorous performance tests should be carried out. Passing behind the prospective use. Strength test Tianjin Tanggu Valve Company, 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. Electric control valve according to the structure can be divided into bias plate, vertical plate, inclined plate and leveraged. Press the seal can be divided into soft and hard seal sealed two. Soft sealing type commonly used rubber ring seal, seal type commonly used hard metal ring seal. Suitable for flow adjustment valve. Because of the pressure loss in the tube valve is relatively large, about three times the gate, so when choosing butterfly, should fully consider the affected piping system pressure loss should be considered to bear the disc media pressure pipeline shutdown strength . Furthermore Tanggu first valve plant, you must also consider the operating temperature limit at high temperatures endured elastic seat material. Typically valves, throttle control and regulate mud medium, requires a short length of the structure, opening and closing speed, low-voltage cut-off (pressure difference), recommended use butterfly. In the double-digit adjusted necking channel, low noise, cavitation and vaporization, a small amount of leakage to the atmosphere, when the abrasive media has, the choice of butterfly. Throttle, or require sealing strict, severe abrasion, low temperature (cryogenic) under working conditions, such as in special working conditions. Tanggu Watts Valve Factory | Ming Port 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.