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New 1550 Series Units & Repairs Available

STAR® servo valves are engineered and manufactured with jeweled inlet orifices and feedback ball using Star’s Sapphire Technology. The benefit to the operator is that the traditional inlet and ball wear erosion problems that have been seen in the past are now just that, a thing of the past. In addition to Star's sapphire technology, they have modernized many of the components within the valve, that coupled with every single spool and bushing being a hand matched pair enable Star servo valves to deliver and maintain higher performance for extended periods without failure. Units are in stock and available for immediate delivery.

Star's 1550 Series Servo Valves cross/interchange with:

  • Moog - 631 series
  • Rexroth - 4WS2EM10 series
Contact us for pricing & availability
Star Hydraulics 1550 Series Servo Valve on white background


  • Standard & high response versions
  • Maximum operating pressure 315 bar
  • ISO 4401-05 mounting pattern
  • Internal pilot supply
  • Suitable for 3-way or 4-way applications
  • Low hysteresis & zero point drift
  • High spool drive forces
  • Spool in bushing design
  • Dry torque motor with mechanical feedback
  • Long life Sapphire Technology
  • Comprehensive 18 month warranty

FREE Repair Evaluations & Quotes

We're not only an Authorized Distributor for Star Hydraulics servo valves, but we're also a Service Center for them as well. We can provide top-quality repairs on Star Hydraulics servo valves.

Contact us if you're interested in or in need of a repair on your Star Hydraulics servo valve.


Star Hydraulics 1550 Series Cut Sheet   Download/View
Star Hydraulics 1550 Series Data Sheet   Download/View