Types of equipment
These cranes are divided into two types: with a floating or fixed ball. In the first case, the cork is not associated with the spindle and moves freely due to the influence of the pressure of the media. Cranes with a ball in the supports involve the installation of traffic jams on an axial protrusion located in the recess. The pressure presses the sealing rings to the surface of the ball. To control the devices, a mechanized drive is used, which can be of pneumatic, electrical or hydraulic types.
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