How to choose the ball valve cylinder of the vacuum suction truck

Generally speakingSewage suction truckThe medium used is dirt, and the force of the selected cylinder is slightly larger.但是Sewage suction truckThe suction and discharge valve switch to achieve pneumatic, how to choose the valve cylinder？Want to use pneumatic device to achieve the ball valve switch and start,To determine the cylinder,First know the ball valve rotation torque is how much,Lever based on stem center to point of application,Find the desired force (torque/lever),This force is the small force acting on the cylinder,And depending on the pressure,You know the diameter of the cylinder,This allows you to select the cylinder。

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