About This Unit

We handle a wide range of PEGASUS 121A units. Each one receives inspection, internal cleaning, and reconditioning before it ships.

Experience and Warranty

We stock common wear parts in-house, so most rebuilds don’t require outside sourcing. Less waiting, faster turnaround.

Specializing in PEGASUS 121A servo valve technology for over five decades

Frequently Asked Questions

If the main housing or board is intact, repair is usually the better option. We can restore most units to working condition with tested parts.

We confirm next steps with you if a unit can’t be rebuilt. No work proceeds without your approval.

We regularly work on units with missing labels. Send us a few images and any visible part numbers, and we can usually match it.

Rush and priority service options exist. Availability depends on current workload, so contact us early.

Yes. We diagnose first, then provide a repair recommendation with our findings. No work begins without your approval.

How We Rebuild This Valve

Each valve goes through teardown to expose wear and buildup. After mineral bath cleaning, we replace damaged parts and reassemble the unit to spec.

  • Cleaning: Units go through a mineral bath, with ultrasonic cleaning used for delicate internals.
  • Final Performance Verification: After reassembly, each valve undergoes bench-testing against published performance specs.
  • Seal and Gasket Replacement: Worn seals and gaskets are replaced with new components during every rebuild.
  • In-House Parts Sourcing: Many repairs use components sourced from our inventory of 17,000+ units.

Diagnostic Testing

With our 13-stand test facility and a Hagenbush proportional valve system, we verify flow curves, hysteresis, frequency response, and more. Performance reports and graphs are available for purchase on request. Our functional testing verifies proper functionality.

Additional PEGASUS 121A Services

Beyond standard maintenance, we offer specialized repairs for your PEGASUS 121A unit. Our disassembly process includes reassembly to spec and spool evaluation, using only new replacement components.

In-House Inventory for PEGASUS 121A

With over 17,000 valves in stock, we can often provide faster turnaround by sourcing parts in-house rather than waiting on OEM lead times.

Maintenance Tips

  • Schedule preventive maintenance intervals based on duty cycle, not just calendar time.
  • Flush the hydraulic system after any major repair to remove debris before reinstalling the PEGASUS 121A.
  • Use only manufacturer-recommended hydraulic fluids to protect internal valve surfaces.

Start Your PEGASUS 121A Reconditioning Process

Request pricing, availability, and turnaround for your PEGASUS 121A. NC Servo Tech provides experienced repair with a 1-year warranty. Contact us to schedule your repair.

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NC Servo Tech is an independent third-party repair facility. We are not affiliated with, endorsed by, sponsored by, or authorized by PEGASUS or any original equipment manufacturer (OEM), nor do we claim to be a PEGASUS service center. All brand names, trademarks, model numbers, and part numbers referenced on this page are the property of their respective owners and are used solely for identification and compatibility purposes.