Overview

We handle a wide range of MOOG D691-702B units. Each one receives inspection, internal cleaning, and reconditioning before it ships.

About Our Shop

We’ve built our shop around one thing: industrial repair. With decades of hands-on experience and deep product knowledge, we deliver consistent results.

Factory-level test stands dedicated to MOOG D691-702B performance verification

Frequently Asked Questions

We give you a straight assessment after inspection. If repair doesn’t make sense, we’ll let you know and discuss alternatives.

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

Yes. Send us photos of the unit from multiple angles. Our team has serviced thousands of models and can often ID them visually.

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

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

How We Rebuild This Valve

The repair process for the MOOG D691-702B includes disassembly, diagnostic review, and replacement of failed seals, spools, or other elements. Final assembly includes leak and function testing.

  • Final Performance Verification: After reassembly, each valve undergoes bench-testing against published performance specs.
  • Cleaning: Units go through a mineral bath, with ultrasonic cleaning used for delicate internals.
  • In-House Parts Sourcing: Many repairs use components sourced from our inventory of 17,000+ units.
  • Teardown: Every valve is disassembled for internal inspection.

Hydraulic Testing Process

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 pre-shipment testing verifies spec-level operation.

Industries We Serve

Our reliable repair services for the MOOG D691-702B are trusted across various sectors including Manufacturing, Oil & Gas, and Plastics & Injection Molding. We understand the unique demands of valves in these environments.

Performance Data

Every MOOG D691-702B we service is tested under real-world conditions. Our diagnostics verify performance against published specifications. Performance data and Specification sheets are available for purchase upon request.

Repair, Rebuild and Exchange Options

Beyond standard refurbishment, we offer specialized overhauls for your MOOG D691-702B unit. Our overhaul process includes spool evaluation and seal replacement, using only replacement replacement components.

Lead Times and Support

As a specialist for MOOG D691-702B 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.

Maintenance Tips

  • Store spare MOOG D691-702B valves in a clean, dry environment to prevent corrosion and contamination.
  • Inspect MOOG D691-702B seals regularly to prevent leaks and maintain performance.
  • Replace inline filters according to maintenance schedules to maintain proper flow rates.

Get a Free Evaluation for Your MOOG D691-702B

Request pricing, availability, and turnaround for your MOOG D691-702B. 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.