Valve Overview

The MOOG 85-422 is one of many models we routinely service. Our process includes disassembly, cleaning, and reassembly using reliable components.

Independent Repair Facility

NC Servo Technology operates independently, so we’re not tied to manufacturer delays or restrictions. That means more flexibility when your system is down.

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.

Yes, our standard 1-year parts and labor warranty is standard on all repairs. Details are provided with your service report.

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

It depends on the unit and scope of work. We provide an estimated timeline after initial evaluation.

Yes. Photos of the nameplate and overall unit let us begin identification before it arrives, which speeds up the process.

Rebuild Steps

Our team disassembles each valve to assess internal wear. After ultrasonic cleaning, we install replacements and reassemble and verify operation.

  • Cleaning: Units go through a mineral bath, with ultrasonic cleaning used for delicate internals.
  • Seal and Gasket Replacement: Worn seals and gaskets are replaced with new components during every rebuild.
  • Leak and Pressure Testing: The reassembled unit is leak-tested and pressure-tested to verify it meets published specs.
  • Teardown: Every valve is disassembled for internal inspection.

Leak and Performance 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 consistent performance.

Performance Data

Every MOOG 85-422 we service is tested under real-world conditions. Our diagnostics verify performance against published specifications. Performance data and Cycle life data are available for purchase upon request.

Repair, Rebuild and Exchange Options

Beyond standard sales, we offer specialized reconditioning for your MOOG 85-422 unit. Our overhaul process includes spool evaluation and bench testing, using only new replacement components.

Turnaround and Shipping

As a focused repair facility for MOOG 85-422 services, NC Servo Technology targets quick resolution with typical lead times of 2 to 3 weeks. Benefit from our direct access to our technicians to keep your systems running smoothly.

Stock Availability

With more than 17,000 valve units in inventory, we can often provide faster turnaround by sourcing parts in-house rather than waiting on OEM lead times.

Data Sheets & Reports

For documented insights into your MOOG 85-422, we can provide access to service logs and reports. This transparency offers you peace of mind and aids in long-term maintenance planning.

Maintenance Tips

  • Check system pressure regularly to verify it stays within the MOOG 85-422 rated operating range.
  • Check valve alignment carefully to prevent undue stress on internal components.
  • Monitor operating temperatures to identify potential issues before failure occurs.

Get an Expert Repair for Your MOOG 85-422

Request pricing, availability, and turnaround for your MOOG 85-422. NC Servo Technology provides warrantied repair with a 1-year warranty. Contact us to start your repair.

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NC Servo Technology is an independent third-party repair facility. We are not affiliated with, endorsed by, sponsored by, or authorized by MOOG or any original equipment manufacturer (OEM), nor do we claim to be a MOOG 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.