Taiwan Rong brand valves offer: Germany HANK Hank valves, valve US CRANE Crane, Taiwan Rong brand valves, valve US FITOK, Japan Yoshitake, Spirax Sarco UK, Germany Rop valves, Taiwan Long Sheng valves, valve Ding Taiwan, Taiwan Toyama valve, Germany Proudly valves, butterfly valves, Germany Eric is a circular disc for opening and closing pieces and rotate with the stem to open, close and adjust a valve fluid channel. Butterfly butterfly plate installed on the pipe diameter direction. Cylindrical channel in the valve body, disc-shaped disc around the axis of rotation, rotation angle between 0 ° ~ 90 °, rotated to 90 °, the valves are open all license conditions. Butterfly called the flap valve is a simple structure of the control valve, but also can be used for low pressure pipeline medium switch control. Butterfly (English: butterflyvalve) refers to the closure member (valve or disc) to the disc around the valve axis to achieve the opening and closing a valve in the main pipeline from the off and throttling. Butterfly is a disc-shaped opening and closing parts of the disc, in the valve body rotating around its own axis, so as to achieve the purpose of opening and closing or adjusting. Valve fully open to fully closed is usually less than 90 °, butterfly and butterfly stroke itself is not self-locking capability, in order to position the disc to install the worm gear on the stem. Using worm reducer, not only can make the disc has a self-locking capability, so that the disc stopped at any position, but also to improve the operating performance of the valve. Industry-specific characteristics of butterfly valves to high temperature, higher pressure range, the valve nominal diameter large, carbon steel valve body, valve plate seal with a metal ring to replace the rubber ring. Large temperature valve welded steel plate manufacturing, mainly for duct smoke and gas pipelines hot medium. The advantage of butterfly valves open and close easily and quickly, saving, fluid resistance, can often operate. 2, simple structure, small size and light weight. 3, can carry mud accumulation of fluid in the pipe mouth least. 4, low pressure, can achieve a good seal. 5, regulated performance. Disadvantages of a butterfly, the use of a small range of pressure and temperature. 2, sealing poor. Butterfly form of the structure can be divided into bias plate, vertical plate, inclined plate and leveraged. Press the seal can be divided into relatively sealed and hard seal type two. Soft sealing type commonly used rubber ring seal, seal type commonly used hard metal ring seal. By connection type can be divided flange connections and clamp connections; can be divided according to the manual transmission, gear transmission, pneumatic, hydraulic and electric several. Installation and maintenance of a butterfly, during installation, the valve to stop in the closed position. 2, the open position the disc rotation angle should be determined. 3, with a butterfly bypass valve, open the bypass valve opening should be preceded. 4, shall be the manufacturer's installation instructions for installation, the weight of a large butterfly, set a solid foundation. 5, butterfly butterfly plate installed on the pipe diameter direction. Cylindrical channel in the valve body, disc-shaped disc around the axis of rotation, rotation angle between 0 ° -90 °, rotated to 90 °, the valves are open all license conditions. 6, if the requirement to use as a flow control valve, the main thing is the right size and type of valve. Butterfly structure principle is particularly suitable for the production of large diameter valves. Butterfly not only widely used in the oil, gas, chemical, water treatment and other general industries, but also for the thermal power plant cooling water system. 7, there are common butterfly butterfly clip and flange type butterfly in two pairs. Wafer type butterfly valve with stud connection between two pipe flanges, flanged butterfly valve is a valve with a flange with bolt flanged ends of the valve on the pipe flange. 8, butterfly butterfly plate installed on the pipe diameter direction. Cylindrical channel in the valve body, disc-shaped disc around the axis of rotation, rotation angle between 0 ° -90 °, rotated to 90 °, the valves are open all license conditions. Contact: Deng Zhicheng, Taiwan Rong brand valves offer: HANK Hank valve Germany, the United States CRANE Crane valves, Taiwan Rong brand valves, valve FITOK US, Japan Yoshitake, Spirax Sarco UK, Germany Rop valves, valve Long Sheng Taiwan, Taiwan tripod valves, valve Toyama Taiwan, Germany Proudly valves, valve Ereli Germany Tel: 021-51870531 Fax: 021-57470266 Mobile: 18221492586