Argo-Hytos Valves and Solenoid Systems

Argo-Hytos makes hydraulic valves for mobile and industrial machinery, together with the coils, connectors and control electronics that operate them.

The range covers directional, check, pressure, flow, motion control, proportional and logic valves, plus explosion proof valves for hazardous areas. Valves come in subplate mounted and modular (sandwich) designs for ISO 4401 interfaces from DN04 (D02) to DN25 (D08), screw-in and slip-in cartridges, and in-line bodies.

Flow ratings run up to 600 l/min on pilot operated directional valves, with most subplate valves rated to 320 or 350 bar and selected screw-in cartridges rated to 420 bar.

Argo-Hytos Valve Range

Directional Control Valves

Directional control valves set the direction of flow in a circuit, starting, stopping and reversing actuator movement. Argo-Hytos valves are available with solenoid, manual (lever or cam), hydraulic, pneumatic and pilot operation.

  • Subplate mounted spool valves: 4/2 and 4/3 valves from DN04 (D02) to DN10 (D05), including the RPE3 and RPE4 solenoid valves (up to 140 l/min, 350 bar), RPR3 manually operated, RPH hydraulically operated and RPER3 versions with an auxiliary lever override. Options include spool position sensors, Lightline RPEL valves and the bankable RPEK1-03.
  • Pilot operated valves: RNEH5-16 (DN16, 300 l/min, 350 bar) and RNEH4-25 (DN25, 600 l/min, 320 bar).
  • Screw-in cartridge valves: 2/2, 3/2, 4/2 and 4/3 solenoid operated spool valves (SD2E), 2/2 solenoid poppet valves (SD1E, SD3E, ROE3) with very low internal leakage and ratings up to 420 bar, manually and hydraulically operated cartridges, and the SD2H-LA3 hot oil shuttle valve for hydrostatic drives.

Check Valves

Check valves allow flow in one direction only, protecting the pump from backflow and holding a load in position when the pressure source is switched off. Logic valves connect circuit branches depending on the pressure.

  • Range: Cartridge, modular and in-line check valves (VJ3 up to 400 l/min), load shuttle valves rated up to 500 bar, a logical 3-way check valve (SH1F-A3), one-way throttling check valves (VJS3) and pilot-to-open check valves in cartridge (SC5H, RJV1), modular (VJR, 2RJV1) and in-line (IC5H) designs.

Pressure Control Valves

Pressure control valves regulate system pressure to set the force on a cylinder or the torque on a motor. Relief valves set maximum circuit pressure, reducing valves hold a lower outlet pressure to protect the consumer, and sequence valves control the order of operations.

  • Range: Direct acting poppet relief valves (SR1A up to 420 bar, VPP), pilot operated spool relief valves (SR4A, VPN up to 250 l/min), PED certified relief cartridges, direct acting and pilot operated reducing-relieving valves (SP2A, VRP2, SP4A, VRN2), solenoid operated on/off relief and reducing valves, the DBV3 relief valve with reverse flow check (200 l/min, 480 bar), and SS3A and SS4A sequence valves.

Flow Control Valves

Flow control valves set the speed of a cylinder or motor by varying the flow cross-section. Valves with pressure compensation hold the set flow regardless of changes in load.

  • Range: Needle restrictor valves with or without reverse flow check (ST21A, ST2(C)1A, VSV2, VSO1-04/R), modular double throttle check valves (VSO1-04/M, 2VS3-06, VSO3-10/M up to 160 l/min), VSK in-line flow control valves, 2-way and 3-way flow regulators in cartridge and modular designs, and SFD2F flow divider-combiner valves up to 170 l/min. Ratings up to 350 bar.

Motion Control Valves

Motion control valves keep a load under control when a negative (overrunning) load would otherwise accelerate it, for example when lowering with lifting devices or winches.

  • Range: SO5A overcentre valves, SOB5A fully balanced overcentre valves and SOBD5A fully balanced valves with external drainage, in C-10-3S and 1-1/16-12 UN cavities, rated to 40 or 80 l/min and up to 420 bar.

Proportional Valves

Proportional valves give continuous, electrically adjustable control of flow or pressure. Pressure compensators hold the pressure drop across a proportional directional valve constant, so speed is independent of load. The whole Argo-Hytos proportional range can be controlled via CANopen.

  • Range: PRM2 and PRM6 direct acting proportional directional valves, PRM8 pilot operated valves (up to 210 l/min), PRMR2 with auxiliary lever override, PRMF2 with spool position sensor, PRM9 with internal feedback and PRL1 high dynamic response valves, plus proportional cartridges for direction, flow and pressure (relief and reducing-relieving), and 2-way and 3-way pressure compensators. Ratings up to 350 bar.

Logic Valves

Logic valves control pressure, flow and flow direction, including at flow rates beyond the limits of conventional cartridge valves. Depending on how they are piloted, they can act as a pressure compensator, a pilot operated pressure valve or a pilot operated directional valve, reducing the size, cost and complexity of a manifold block.

  • Range: SL2H spool type logic cartridges, normally open or normally closed, in C-10-3S and VC12-3S cavities, rated to 80 or 120 l/min and 350 bar.

Explosion Proof Valves

Argo-Hytos explosion proof valves are certified to ATEX and IECEx for use in potentially explosive atmospheres.

  • Range: Valves with encapsulation (Ex-m), flameproof enclosure (Ex-d) and dust protection by enclosure (Ex-t), including versions for Class 1, Division 1. Valve types include 4/2 and 4/3 solenoid operated and pilot operated directional valves, 2/2 and 3/2 spool and poppet valves, proportional directional valves and direct acting proportional pressure valves.

Electronics and Solenoid Systems

  • Coils and connectors: C* coils for valve solenoids and K*/KM* connectors to EN 175301-803 form A or M12.
  • Control electronics: EL6 plug-in digital control units, EL7-I units mounted on the valve connector, and EL7-E and EL8 DIN rail units for the control cabinet.

Further Argo-Hytos valve types, sizes and configurations are available beyond those listed here; our team can help with any Argo-Hytos valve, coil or control unit you need. Cartridge bodies, subplates and serial plates are covered on our Argo-Hytos Manifolds and Connecting Plates page.

Typical Applications

Argo-Hytos valves and solenoid systems are used in mobile and industrial hydraulics, including:

  • Agricultural machinery, such as tractors, sprayers and forage harvesters
  • Construction machinery, such as pavers and compactors
  • Industrial machinery, such as sawing machines
  • Wind power
  • Hydraulic power units and manifold blocks

Our website shows a selection of the Argo-Hytos valves we supply. If you can’t find what you need, or would like impartial advice on the right specification for your application, please contact our team; we source globally and will still be able to help.

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