Butterfly valve called the flap valve is a simple structure of the control valve, butterfly valve can be used to switch control of the media refers to the low-pressure pipe closed parts (disc or disc) to the disc around the valve axis to achieve the opening and closing a valve, the valve can be used to control the flow of air, water, steam, corrosive media, mud, oil, liquid metals and radioactive fluids and other types of media. Cut off from the main pipe and the throttle effect. Butterfly is a disc-shaped opening and closing parts of the disc, in the valve body rotating around its own axis trench gate signal, so as to achieve the purpose of opening and closing or regulation. Electric actuator output torque valve operation should be 1.2-1.5 times the maximum torque. Electric butterfly valve operating thrust: the host structure electric valve actuators in two ways: one is not configured thrust plate. Output torque through the thrust plate stem nut is converted to output thrust. Direct output torque; the other is configured thrust plate. Output shaft rotation number: How many electric valve actuators and valve output shaft rotation number of the nominal diameter, stem pitch, thread the first few related. H is the valve opening height, according to M = HZS calculate the total number of turns (M is an electric device should satisfy .S to stem transmission thread pitch, Z for the first few stem threads. Flanged signal gate valve _ _ out of Hong Kong Dongguan that the valve is provided by Port Valve Technology Co., Ltd., Dongguan Ming Port Valve (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 innovation and continuous improvement philosophy will lead valve and you work out of Hong Kong into the brilliant, for a better future!