Butterfly butterfly valve installed in the pipe diameter direction. In the butterfly valve body cylindrical channel, the disc-shaped disc rotates about the axis, the rotation angle is between 0 ° ~ 90 °, when rotated to 90 °, the valve is fully open state card. Butterfly valve structure is simple, small size, light weight, only a few components. And just turn 90 ° to quickly open and close, easy to operate, while the valve has good fluid control features. When the butterfly valve is fully open, the thickness of the disc is the only resistance the media travels through the valve body, so the pressure drop across the valve is small and therefore has better flow control characteristics. Butterfly valve seal and metal seal two types of seal. Flexible sealing valves, seals can be embedded in the body or attached to the butterfly plate around. When the butterfly valve is at the opening degree, the shape of the opening formed by the valve body and the front end of the butterfly valve takes the valve shaft as the center and the two sides form different states. The front end of the butterfly plate on one side moves in the direction of flowing water while the other side flows in the direction of flowing water Therefore, one side of the valve body and the valve plate is formed like a nozzle-shaped opening, the other side is similar to the throttle-shaped opening, the nozzle side than the throttling side of the flow rate is much faster, and throttling side of the valve will produce negative pressure, often There will be a rubber seal off.  butterfly valve operating torque, due to the opening and opening and closing of the valve in different directions its value is different, horizontal butterfly valve, especially the large-diameter valve, due to the depth of the valve shaft, the difference between the head produced by the torque can not be ignored. In addition, the valve inlet side of the device elbow, the formation of bias current, the torque will increase. Valve in the middle of the opening, due to the role of water flow torque, the operating mechanism needs self-locking.
Outdoor Peacock Lights
Outdoor Peacock Landscape Lights,Outdoor Peacock Lawn Lights,Simulation Peacock Lights,Peacock Landscape Garden Lights
Sichuan Kangruntengpu Photoelectric Technology Co., Ltd. , https://www.tengpulighting.com