A new range of hydraulic piston pumps has been launched to help reduce the size of fan drive systems for both on- and off-highway vehicles. Developed by Parker Hannifin, and based on the company’s proven P1 piston pump, the new system features a dedicated proportional pressure control valve, built directly into the pump assembly. This effectively minimises system size and weight, without affecting overall performance or functionality, and enables design engineers to make best use of the space available on each vehicle; additionally, as part of the hydraulic fan drive system, the new system contributes to improved fuel efficiency and emission reduction.