The Control Plate is used to vary the angle of the swash plate, which in turn varies the stroke of the pistons and the amount of fluid pumped per revolution. This allows the pump to be operated at a constant speed while varying the flow rate, or to be operated at a constant flow rate while varying the speed.Attributes:• Helps to keep the piston in place and prevents them from moving out of alignment• Manufactured to precise specifications and are built for durability and reliabilityApplications:The Control Plate helps to protect the pistons from wear by providing a smooth surface for the pistons to slide against.