1, the main control parameters for the valve size specifications. 2, a single butterfly valve plate professional valve, its simple structure, easy processing, low cost, easy to operate, but the regulation accuracy is poor, only for ventilation and air conditioning system for the switch or coarse adjustment occasions. 3, can be manual, electric or zip-operation of the valve can be fixed at any angle range of 90 °. 4, the uniaxial single valve plate to withstand limited power, when in the large pressure, large flow rates valve life short. The valve has closed and the general style of the points, holding and non-holding of the points. 5, only a two-position electric butterfly valve direct control, actuators and multi-leaf valve same. Typically, the throttle control and regulation of the media in the mud, requiring a short length of the structure, opening and closing speed (1/4 turn). Low pressure cut-off (pressure difference), recommended use butterfly. In the two-position adjustment, necking to channel, low noise, cavitation and gasification phenomenon, a small amount of leakage into the atmosphere, when the abrasive media has, you can use butterfly. Throttle under special working conditions, or require sealing strict, or badly worn, low temperature (cryogenic) under working conditions, etc. When using butterfly valves, use a specially designed metal seal with conditioner to three eccentric or double eccentric dedicated butterfly valve. _ _ Zhuhai valve valve Outlet valve out of Hong Kong, the Hong Kong valve provided by the Dongguan Science and Technology Co., Ltd. Valve Co., Ltd., Dongguan Ming Kong (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 valve and you work out of Hong Kong into the brilliant, for a better future!