Customer-specific closed-loop functions
Leslah Garland 3 June 2026 
Parker Hannifin, a global leader in motion and control technologies, has announced it has launched the next variation of its innovative DFplus Gen IV valve range.
The company says expanding the platform with a D-version option, this product supports customer-specific closed-loop functions and enables direct connection and power supply of analogue sensors. It is therefore suitable, for example, for pressure control in paper machines as well as for rapid pressure control and relief in high-speed presses.
The new D-version valve adds a second, freely configurable control loop to the direct-operated DFplus platform, enabling customised pressure control or position control. For these closed loop functions, analogue pressure or displacement measurement systems can be connected directly to the valve electronics, with sensor power supplied by the valve electronics. The DFplus valves have been in use over several generations and this option is being introduced as part of the fourth generation.
The D-version includes the DFplus pilot valve performance with a high-resolution sensor signal interface and selectable setpoint type for an analogue setpoint signal. It supports a freely configurable second control loop and uses standard IO-Link Class A, with an optional IO-Link Class B variant that can provide a switchable controller. Sensors are connected via an M12 socket on the valve electronics and powered via the valve electronics. The option is available for the valve series D1FP, D3FP, and D30FP. Configuration can be carried out using Parker ProPXD software or through an IO-Link connection.
“The DFplus D-version valves offer a cost-effective solution for high dynamic closed loop-controlled applications such as volume flow control in pumps or highly precise pressure control in demanding applications”, Frank Henschke, Product Manager at Parker’s Hydraulic Valve Systems Division Europe. They are available now in selected sizes and configurations.
For detailed technical data, configuration options, and local availability, please visit: https://ph.parker.com/gb/en/product-list/direct-operated-proportional-dc-valve-series-d1fp-d3fp
