Parker Pushes Control Logic Onto the Valve With New DFplus Gen IV Variant

What happened: Parker Hannifin has added a D-version to its DFplus Gen IV valve line. The model carries a second, freely configurable control loop on the direct-operated platform, handling pressure or position control on its own. Analog sensors connect straight to the valve electronics, which also power them.

Why it matters: Because the control loop sits inside the valve, machines can run closed-loop functions without a separate external controller. Pressure or displacement sensors plug into an M12 socket on the valve and draw power from it directly, cutting the need for extra supply lines. Provides a lower-cost route to high-dynamic control in jobs like pump flow regulation and precise pressure management.

Industry context: The option spans the D1FP, D3FP and D30FP series and builds on DFplus pilot-valve performance, a high-resolution sensor interface and a selectable analog setpoint. It uses IO-Link Class A as standard, with a Class B variant offering a switchable controller. Parker points to paper-machine pressure control and rapid pressure relief in high-speed presses as fits. Setup runs through ProPXD software or over IO-Link.

Our take: Smarter valves reduce system complexity while bringing intelligence closer to the machine.