CaproniRH06041024/00F4/3 Solenoid Directional Control Valve, NG6 / CETOP 3, Float Centre, 24 V DC, 315 bar, 60 L/min

Product Description

What this part is

A four-way, three-position solenoid-operated hydraulic directional control valve in the NG6 / CETOP 3 (ISO 4401 size 03) subplate-mounted pattern. Two solenoids, spring centred, with 24 V DC coils. It is the standard building block for controlling a double-acting cylinder or a bidirectional hydraulic motor from a PLC or relay output.

Decoding the order code

RH – Caproni solenoid-operated directional valve family06 – NG6 / CETOP 3 interface size (ISO 4401-03)041 – spool code: 4/3 with the float or “motor” centre, A and B both connected to T in the neutral position024 – 24 V DC coil voltage/00F – build and connector variant, retained as an ordering reference

What these specs mean in practice

The centre condition is the spec that decides whether this valve suits your machine. A float (motor) centre vents both service ports A and B to tank when the valve is de-energised, so the actuator is left free: a cylinder can be pushed by its load and a hydraulic motor coasts to a stop instead of being braked hydraulically. That is exactly what you want on a winch, a drum drive or a motor you must not stall, and exactly what you do not want on a hoist or a press platen that must hold position. A closed centre (all ports blocked) or a tandem centre (P to T, A and B blocked) behaves entirely differently — different spool code, different valve, not a substitute.

Coil voltage is the other one to get right, and it is the most common ordering mistake on these valves. This is a 24 V DC valve. The same body is built with 12 V DC, 110 V AC and 220 V AC coils, and putting AC voltage on a DC coil destroys it. Check the coil label before wiring.

Both solenoids carry a manual override pin, so the valve can be shifted by hand for commissioning or to move a machine with the power off.

Published specifications

Function: 4/3, four-way three-position directional controlCentre condition: float / motor spool — A and B connected to T in neutralActuation: two solenoids, spring centred, with manual overrideCoil voltage: 24 V DCInterface: NG6 / CETOP 3, ISO 4401-03 subplate mountingMaximum operating pressure: 315 bar (approximately 4,570 psi)Maximum flow: 60 L/min (approximately 15.8 US gpm)Electrical connection: DIN 43650 (Hirschmann) plug pattern on each coilFluid: mineral hydraulic oil

What is in the box

One valve with both solenoid coils fitted. No subplate or manifold, no DIN 43650 connector plugs, no mounting bolts and no seal kit are included. The four O-rings that seal the valve to its subplate and the connector plugs are the two items most often needed alongside it — order them if you do not have them.

Installation and setup notes

The valve bolts onto a standard ISO 4401-03 / CETOP 3 subplate or manifold station, so it interchanges mechanically with any other NG6 valve regardless of maker — but only the spool function, centre condition and coil voltage make it a functional replacement. Fit fresh subplate O-rings, torque the four mounting screws evenly, and keep the T line unrestricted: a float centre dumps both service ports to tank, so the return line sees full flow in neutral. Filtration to the usual 25 micron or better protects the spool.

Interchange guidance

Because the mounting pattern is an ISO standard, an equivalent 4/3 float-centre NG6 valve with 24 V DC coils from Bosch Rexroth (4WE6J..G24), Duplomatic, Atos, Hydronit or Northman will bolt into the same station and behave the same way. Any RH06041 with a different voltage suffix (012, 110, 220) is the same hydraulic valve with the wrong coil for a 24 V DC circuit, and an RH06001 or RH06021 is a different spool — related parts, not equivalents. Supplied as new old stock: unused, from an opened carton.