Use of butterfly valves

The degree of opening of the butterfly valve and the relationship between the flow rate is substantially linearly proportional to the change. If you are used to control the flow
Its flow characteristics and pipe flow resistance is also closely related, such as the two pipe installation valve diameter, form full
Same, the pipeline loss coefficient valve flow difference will be large. If the throttle valve in the amplitude
The back of the larger state, the valve plate prone to cavitation, the possibility of damage to the valve, generally used in the 15 °
. ?
When the degree of opening of the butterfly valve is, the shape of the opening formed in the distal end of the valve body and the butterfly plate to the valve shaft as the center, on both sides of the shaped
Into a complete different side of the disc front Shun direction of running water moving to the other side of the water countercurrent direction,
Accordingly, the side than on the side of the valve body and the valve plate is formed similar to the nozzle-shaped opening, the other side is similar to the shaped opening of the orifice, nozzle
Throttle side flow speed, and the below the throttling side valve negative pressure will always be a rubber seal off
pneumatic fitting
Butterfly valve operation torque, the opening degree and the direction of valve opening and closing type, its value is different horizontal butterfly valve, especially large
Caliber valve, water depth, valve shaft, the torque generated by the water head difference can not be ignored. In addition, the valve into the
The mouth-side apparatus elbow formed when the bias torque will be increased. When the valve is in the intermediate degree of opening, due to the water flow
Torque is active, the operating mechanism is self-locking.

electric solenoid valve