- pneumatic ball valve The opening of the adjustment of the pneumatic valve and flow relationship

pneumatic butterfly valve opening and flow, the relationship between the linear basically percentage changes. If is used to control the flow, the flow characteristic and pipe flow resistance have close relationship, such as two pneumatic valve diameter pipe installation, forms, etc. All the same, and the pipe loss coefficient, pneumatic valve flow will be a big difference. If the throttled the larger state of pneumatic butterfly valve, pneumatic valve plate on the back of the easy cavitation occurs, the possibility of damage pneumatic valve, are generally used on outside °. Pneumatic butterfly valve in the opening, the pneumatic valve body and disc front of mouth shape with pneumatic valve shaft as the center, on both sides of the form a complete different state, the butterfly plate on one side of the front end of downstream water direction, the other side of the upstream water direction, therefore, on one side of the pneumatic valve and pneumatic valve plate form like opening nozzle shape, on the other side is similar to throttle aperture openings, nozzle side of more quickly than the throttling velocities, and side below will produce negative pressure pneumatic valve, throttle rubber seals often can appear fall off. Pneumatic butterfly valve, operating torque for the opening and the direction of pneumatic valve opening and closing its different values, different horizontal pneumatic butterfly valve, especially large diameter pneumatic valve, due to water depth, pneumatic valve shaft, the torque developed by the water head difference also nots allow to ignore, general large diameter pneumatic butterfly valve to be installed into the pneumatic butterfly valve, pneumatic butterfly valve has the switch is rapid, large output torque, etc. In addition, pneumatic valve inlet side bend, form the bias current, torque will be increased. Of the opening of the pneumatic valve in the middle, because the water flow torque, operators need to be self-locked.
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