Servo Valves

  • Overview
  • Documents

Optimal closed loop control

Precise and reliable, Vickers by Danfoss servo valves provide closed-loop control with exact positional accuracy, repeatable velocity profiles, and predictable force or torque regulation, outperforming the competition in even the most demanding applications.

Contact us to learn about our servo trade-up program, with incentives for replacing competitors’ valves.

  • Frequency response over 100 Hz at the 90-degree phase lag
  • Pressure up to 350 bar (5,000 psi)
  • Flow up to 151 L/min (40 gal/min)
  • Optimal closed loop control

The ultimate in system control

Subplate or manifold mounted, SM4 and SX4 servo valves have a symmetrical design that provides inherently dependable metering of control flow with minimum null shifts for more consistent machine operation. These two-stage modular flow control valves provide infinite cylinder position control to within 0.025 mm (0.001 in) or better, as well as infinite proportional flow control for real-time velocity/acceleration profiles when applied with servo hydraulic motors tachometers, and electronics.

Made to last

The spool and sleeve are hardened stainless steel to minimize wear and erosion. High-strength aluminum alloy parts are extremely durable yet lightweight. An integral 35-micron absolute filter reduces sensitivity to contamination.

The perfect fit and features

Our SM4 line features more variation to help you find the perfect fit for your application. The SX4 is our highest performance servo valve, which offers the following advantages:

  • Extended frequency response and improved stability in closed-loop systems
  • Greater stability in high-shock environments due to the six-screw mounting
  • The jeweled feedback ball receiver virtually eliminates the wear that can lead to loss of control
  • Jeweled openings extend valve life
  • Standardized port circle and mounting pattern, with available adapter manifolds

Trade up to Vickers by Danfoss and save

Need a new servo valve? Trade up to Vickers by Danfoss. Send us a qualifying competitor's servo valve to receive a discount on your order. In addition, order a back-up valve and save when ordering with any of the trade-up incentives. Download the brochure to learn more about the servo valve trade-up program.

Learn more

Don’t forget the subplates and bolt kits

To install industrial valves, you need subplates and bolt kits. This hardware is engineered especially for valves and manifolds to give your systems the flat surfaces and stiffness required for a reliable seal.


Type Name Language Valid for Updated Download File type
Catalog Vickers by Danfoss industrial valve portfolio catalog English Multiple 07 Sep, 2023 1.9 MB .pdf
Brochure Vickers® by Danfoss Servo valve trade-up program - SM4 English Multiple 19 Jul, 2023 1.7 MB .pdf
Fact sheet Vickers® by Danfoss Servo valve tradeup program - SM4 English Multiple 21 Aug, 2023 491.4 KB .pdf


  • Tilting trains
  • Presses
  • Primary metals
  • Plastic injection molding, blow molding
  • Pulp and paper
  • Test equipment and simulation
  • Turbine control (steam)
  • Wood processing

Designed to perform, built to last​​

A leader in hydraulics for over 100 years, the Vickers by Danfoss portfolio of industrial solutions deliver legendary performance, even under the most extreme conditions. 

Learn more​

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In our digital catalog you can find product specifications, literature and helpful tools like product configurators, 2D/3D models, cross reference, crimp specs and many more.