Set up by combining our variable displacement pumps and self-regulating pumps. They can either supply larger volume flows or feed different circuits. The rated size and the type of the pump for open or closed circuits are variable. The sequential arrangement is determined by the maximum torque which can be transferred. Due to their swashplate design our motors can also be combined to form double and tandem motors.tandem pumps: Pumps of the same type,high conversion range for smooth acceleration.