Caproni4/3 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 family.

06: 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 position.

024: 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 the application. 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 behaviour suits a winch, a drum drive or a motor that must not stall, and does not suit a hoist or a press platen that must hold position. A closed centre with all ports blocked, or a tandem centre with P to T and A and B blocked, behaves differently and carries a different spool code.

Coil voltage is the other decisive spec. 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 AC voltage on a DC coil destroys it.

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

Published specifications

Function: 4/3, four-way three-position directional control.

Centre condition: float / motor spool, A and B connected to T in neutral.

Actuation: two solenoids, spring centred, with manual override.

Coil voltage: 24 V DC.

Interface: NG6 / CETOP 3, ISO 4401-03 subplate mounting.

Maximum 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 coil.

Fluid: mineral hydraulic oil.

Scope of supply

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.

Mounting data

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. Spool function, centre condition and coil voltage determine whether it is a functional replacement.

A float centre dumps both service ports to tank, so the return line carries full flow in neutral.

Filtration: 25 micron or better.

Quantity and configuration

One valve. New old stock, unused, from an opened carton.

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 bolts into the same station and behaves the same way. Any RH06041 with a different voltage suffix (012, 110, 220) is the same hydraulic valve with a different coil, and an RH06001 or RH06021 is a different spool; those are related parts rather than equivalents.