... Pump &valveAdjustable suction pads, can be turned off individuallySuitable for lifting: Material properties, gastight,suface conditions: smooth, even,Advantages:Quick and ... pads are installed on the two sides of the cross beams, each cross beam is moveable on the main beam, and ... of vacuum reservoir.3) The suction pads and the cross beams are connected by spring cushion, if the aluminum board surface ...