Key Details

At NC Servo Tech, our shop is equipped to service the HARTMANN ROLVANE HT22. We use a consistent process to restore each unit to working condition.

About Our Shop

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

Specializing in HARTMANN ROLVANE HT22 servo valve technology for over five decades

Frequently Asked Questions

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

Expedited options are available depending on current scheduling. Contact us to discuss your timeline.

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

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

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.

Rebuild Steps

The process begins with disassembly and visual evaluation. We then clean, replace worn pieces, and reassemble the valve to restore its function.

  • Final Performance Verification: After reassembly, each valve is bench-tested against published performance specifications.
  • 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.
  • 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 performance testing verifies spec-level operation.

Turnaround and Shipping

As a dedicated source for HARTMANN ROLVANE HT22 services, NC Servo Tech targets quick resolution with typical lead times of 1 to 2 weeks. Benefit from our dedicated support team to keep your systems running smoothly.

Documentation on Request

For detailed insights into your HARTMANN ROLVANE HT22, we can provide access to reports 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.
  • 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 HARTMANN ROLVANE HT22.

Let Us Repair Your HARTMANN ROLVANE HT22

Request pricing, availability, and turnaround for your HARTMANN ROLVANE HT22. NC Servo Tech provides independent repair with a 1-year warranty. Contact us to start 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 HARTMANN or any original equipment manufacturer (OEM), nor do we claim to be a HARTMANN 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.