About This Unit

At NC Servo Technology, our shop is equipped to service the MOOG 631-175C. We use a consistent process to restore each unit to working condition.

About Our Shop

NC Servo Technology specializes in both valves and electronic controls, which lets us operate without the delays of OEM service centers.

Specializing in MOOG 631-175C servo valve technology for over five decades

Frequently Asked Questions

Most repairs are completed within 1 to 3 weeks, depending on workload and parts availability.

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

You can send it as-is. We handle all cleaning and preparation as part of our standard process.

In most cases, repair costs less than replacement, especially for legacy or OEM-specific models. We evaluate every unit and let you know what makes sense.

Part of our intake includes troubleshooting to determine the failure point. We report findings before proceeding.

Repair Process

Once a valve arrives, we tear it down fully, examine key surfaces, and replace worn or damaged parts using components we stock in-house, cutting out OEM lead times.

  • Final Performance Verification: After reassembly, each valve is bench-tested against published performance specifications.
  • Teardown: Every valve is disassembled for internal inspection.
  • In-House Parts Sourcing: Many repairs use components sourced from our inventory of 17,000+ units.
  • Seal and Gasket Replacement: Worn seals and gaskets are replaced with new components during every rebuild.

Leak and Performance Testing

NC Servo Technology operates over a dozen dedicated flow test stands, including setups for proportional and servo valves. Every valve goes through performance and leak testing using a range of hydraulic fluids like Skydrol and MIL-5606. Our functional testing verifies spec-level operation.

Where the MOOG 631-175C Is Used

Our professional repair services for the MOOG 631-175C are trusted across various sectors including Plastics & Injection Molding, Manufacturing, and Defense. We understand the unique demands of valves in these environments.

Additional MOOG 631-175C Services

Beyond standard maintenance, we offer specialized overhauls for your MOOG 631-175C unit. Our teardown process includes bench testing and flow verification, using only replacement replacement components.

Turnaround and Shipping

As a dedicated source for MOOG 631-175C services, NC Servo Technology targets quick resolution with typical lead times of 1 to 2 weeks. Benefit from our dedicated support team to keep your systems running smoothly.

Parts and Inventory

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.

Technical Information

For transparent insights into your MOOG 631-175C, we can provide access to repair records and service logs. This transparency offers you record-keeping and aids in long-term maintenance planning.

Maintenance Tips

  • Perform fluid analysis to detect contamination early and prevent system damage.
  • Replace inline filters according to maintenance schedules to maintain proper flow rates.
  • Check valve alignment carefully to prevent undue stress on internal components.

Start Your MOOG 631-175C Reconditioning Process

Request pricing, availability, and turnaround for your MOOG 631-175C. NC Servo Technology provides experienced repair with a 1-year warranty. Contact us to schedule 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.