Installation and maintenance 1, during installation, to stop the valve in the closed position. 2. open position should the disc rotation angle to determine. 3, butterfly valve with a bypass valve, open the bypass valve opening should be preceded. 4, shall be the manufacturer's installation instructions for mounting flange Worm butterfly processing, the weight of a large butterfly, set a solid foundation. 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 in the art carbon steel flanges butterfly valve, 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. Handle clamp butterfly | Meizhou butterfly | Port valve provided by Ming Ming Port Valve Co., Ltd., Dongguan. Port Valve Co., Ltd., Dongguan Ming (www.gdmgfm.com) strong, credible, butterfly and other industries in Dongguan, Guangdong has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead the next port of the valve and you hand into the brilliant, for a better future!