Teardown and Rebuild Steps

We specialize in the overhaul of your Proportion Air X-ACT-4, including the replacement of all necessary seals and worn components.

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.

Frequently Asked Questions

Yes, a 12-month warranty on parts and labor is standard on all repairs. Details are provided with your service report.

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

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

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

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

Rebuild Steps

Every Proportion Air X-ACT-4 gets a controlled teardown on our bench. We document condition, replace what’s needed, and reassemble to proper operating condition.

  • Leak and Pressure Testing: The reassembled unit is leak-tested and pressure-tested to verify it meets published specs.
  • Final Performance Verification: After reassembly, each valve undergoes bench-testing against published performance specs.
  • In-House Parts Sourcing: Many repairs use components sourced from our inventory of 17,000+ units.
  • Cleaning: Units go through a mineral bath, with ultrasonic cleaning used for delicate internals.

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 operational testing verifies consistent performance.

Performance Data

Every Proportion Air X-ACT-4 we service is tested under operating environments. Our diagnostics verify performance against published specifications. Specification sheets and Technical diagrams are available for purchase upon request.

Turnaround and Shipping

As a specialist for Proportion Air X-ACT-4 services, NC Servo targets quick resolution with typical lead times of 1 to 2 weeks. Benefit from our direct access to our technicians to keep your systems running smoothly.

In-House Inventory for Proportion Air X-ACT-4

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.

Data Sheets & Reports

For documented insights into your Proportion Air X-ACT-4, 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 valve alignment carefully to prevent undue stress on internal components.
  • Flush the hydraulic system after any major repair to remove debris before reinstalling the Proportion Air X-ACT-4.
  • Check system pressure regularly to verify it stays within the Proportion Air X-ACT-4 rated operating range.

Request a Quote for Your Proportion Air X-ACT-4 Maintenance

Request pricing, availability, and turnaround for your Proportion Air X-ACT-4. NC Servo provides experienced repair with a 1-year warranty. Contact us to set up your repair.

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