About This Unit

Whether the issue is age, wear, or contamination, the SLI 334?? can often be restored. NC Servo Tech applies the same structured approach to every rebuild.

Experience and Warranty

Unlike OEM shops, we use our own inventory to handle most rebuilds. That cuts down on lead time and gets your unit back faster.

50+ years of expertise in SLI 334?? Valve Repair

Frequently Asked Questions

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

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.

Even if the tag is worn off, we can often match the unit based on shape, size, and internal configuration.

We confirm next steps with you if a unit can’t be rebuilt. No work proceeds without your approval.

Warranty coverage of our standard 1-year parts and labor warranty is included with every repair we complete.

Repair Process

We rebuild every valve from the inside out: cleaning, inspection, parts replacement, reassembly, and bench testing.

  • Leak and Pressure Testing: The reassembled unit is leak-tested and pressure-tested to verify it meets published specs.
  • Complete Disassembly: The unit is disassembled and all parts are laid out for individual inspection.
  • 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.

Testing and Bench Verification

Each SLI 334?? is tested on a dedicated flow bench before it ships. We check pressure, flow, leakage, and response characteristics against published specifications. Our functional testing verifies spec-level operation.

Industries We Serve

Our professional repair services for the SLI 334?? are trusted across various sectors including Paper & Pulp, Automotive, and Marine. We understand the unique demands of valves in these environments.

Technical Specifications

Every SLI 334?? we service is tested under typical applications. Our diagnostics verify performance against published specifications. Performance data and Cycle life data are available for purchase upon request.

Additional SLI 334?? Services

Beyond standard maintenance, we offer specialized repairs for your SLI 334?? unit. Our teardown process includes pressure testing and spool evaluation, using only replacement replacement components.

Stock Availability

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.

Maintenance Tips

  • Replace inline filters according to maintenance schedules to maintain proper flow rates.
  • Store spare SLI 334?? valves in a clean, dry environment to prevent corrosion and contamination.
  • Keep a spare SLI 334?? on hand to minimize downtime during unplanned failures.

Get a Free Evaluation for Your SLI 334??

Request pricing, availability, and turnaround for your SLI 334??. NC Servo Tech provides independent repair with a 1-year warranty. Contact us to request 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 SLI or any original equipment manufacturer (OEM), nor do we claim to be a SLI 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.