Size 03 • Q_max 20 l/min (5 GPM) per section • Q_max 60 l/min (16 GPM) total inlet p_max 250 bar (3600 PSI)

• Compact modular valve assembly for the control of fluid flow, direction and pressure
• Horizontal integration of up to 8 modules with end inlet or 16 modules with center inlet
• Convenient compact solution for both mobile applications and small hydraulic power packs
• Solenoid operated directional control valves in sections enable vertical integration
• High block variability utilizing both vertical and horizontal modular integration
• Blocks with valve cavities C-08 (3/4-16 UNF) enable the use of wide range of screw-in cartridge valves from the production program
• Simple creation of a hydraulic circuit using stocked items without having to produce a custom block
• Optional inlet block with proportional flow control up to Q = 45 l/min and pressure drop stabilization
• End valve blocks help to save space and costs
• Connection threads of inlet ports P, T: 3/8“ BSPP or SAE 8 (3/4-16 UNF)
• Connection threads of output work ports A, B: 1/4“ BSPP or SAE 6 (9/16-18 UNF)
• Standard components are made from various materials. Refer to individual catalog sections
• Optional increased surface corrosion protection 520 h in NSS acc. to ISO 9227, e.g. for mobile applications

RPEK1-03

Solenoid Operated Directional Control Valve built into a modular block, intended for horizontal integration
› Applicable to a pressure of 250 bar and a maximum flow of 20 l/min per section
› Basic builing element for modular assembly RPEK1-03/B
› Optional blocks are ground on the top surface to enable vertical integration
› Range of control voltages, solenoid connections and types of emergency hand control
› Wide range of spools
› Ideal for smaller build-in space and assembly into control manifold or powerpacks
› Cost efficient due to high flexibily of construction soloutions
› In the standard version the valve body is phosphated. The steel parts are zinc coated for 240 h corrosion protection in NSS acc. to ISO 9227. Optional increased surface corrosion protection of the whole valve 520 h in NSS, e.g. for mobile applications.

Inlet blocks, plates and end cover plates
Inlet block has P,T ports with connecting threads to connect the modular block to the pressure and return branches of the hydraulic circuit. In
addition, valves can be integrated to the inlet block that together control the hydraulic paremeters of the whole circuit.
Modular blocks can be connected to the hydraulic circuit (P,T) on the left, right or in the middle.

– Modular block pressurized from the left by a block with valves or a plate with P,T inputs on the face. The right side of the block is closed
by the end plate or, alternatively by the housing of the directional control valve.
B – Modular block pressurized from the centre plate with inputs P,T on the upper surface or sides. Both ends of the block are closed using end plates
or, alternatively by the housing of the directional control valve.
C – Modular block pressurized from the right by a plate with inputs P,T on the face. The left side is closed by and end plate or by the housing
of the directional control valve.

Block HB03-RPEK-MAB2 with throttle or blocking valves in channels A, B
The MAB2 block is designed for the installation of throttle valves with bypass check valves. The valves are used to independently to adjust flow in
channels A,B of the actuator. The set flow rate will vary in conjunction with the pressure drop on the valve. If the input channels A,B are on the left,
flow is throttled in the direction of the actuator (A → T, B → T).
Alternatively, 2/2 directional control valves or poppet valves are built-in the channels A, B connecting to the actuator.
Using the Z4 plug will block flow through either channel A or B. Using the Z5 plug flow remains in the channel.
Caution:
The indirectly-operated poppet valve SD3E-A2 (Datasheet HA 4043) closes the channel only when pressurized fluid is transferred from the right.

Modular blocks and plates for vertical integration

The base element for vertical integration is the body of the RPEK1-03 directional control valve with the honed upper surface of the housing, having
unthreaded A, B outputs and 4 x M5 threads via which the integrated blocks are mounted to the body of the distributor. The first block
is the VJR5-03 pilot operated check valve, which ensures the load position when the pressure source is switched off. A variant is an extension plate
which raises the next block above the level of the directional control valve connecter sockets.
The Mx block is designed for a built-in throttle valve to control flow in channels A, B of the actuator.
The PMx block is designed for a built-in crossport pressure relief valve, insuring both A and B channels of the actuator against pressure overload.
The valve stack is closed by an end plate enabling connection to the actuator.

Pilot Operated Check Valve, Pilot to Open, Ball-Type, Bankable VJR5-03/M

Pilot operated check valve assures a position of the load connected to the actuator when the pressure source is disconnected. The check valve is closed by the fluid pressure induced by the load acting at the actuator. The fluid flows freely through the check valve to the actuator A(B)1 → A(B)2. In the opposite flow direction A(B)2 → A(B)1, the check valve is normally closed. To open it, pressure is required in the pilot channel that acts on the front of control piston. This mechanically opens the cone, thus releasing flow in the closing direction A(B)2 → A(B)1 from the actuator to the tank. The pilot ratio is 3:1, meaning a minimum of one-third of the load pressure is required to open the valve. The valve is spring closed