Introduction

At KV Controls, precision, reliability, and technical expertise form the core of our service offering. Recently, our skilled team completed a full repair and service on a DN 250 Fisher Valve for an industrial client, restoring it to OEM-level performance. As a trusted supplier and service partner in South Africa, we ensure that every valve repair is handled with the highest industry standards — minimising downtime and maximising operational efficiency.

The Importance of Maintaining a DN 250 Fisher Valve

The DN 250 Fisher Valve, commonly used in demanding process control applications, plays a critical role in regulating flow, ensuring safety, and optimising plant performance. Without regular inspections and servicing, issues such as leakage, inefficient operation, or premature wear can lead to costly downtime.

KV Controls’ service team follows OEM repair procedures and uses only genuine Fisher parts, ensuring valves continue to perform reliably under harsh industrial conditions.

Our Recent DN 250 Fisher Valve Repair Project

Our repair process included:

Full disassembly and inspection of the valve body, trim, actuator, and sealing components.
Replacement of worn soft goods such as packing and gaskets.
Precision lapping of metal seats to restore sealing performance.
Calibration of the actuator and positioner to meet OEM specifications.
Comprehensive testing to verify performance before reinstallation.

The result? A fully restored DN 250 Fisher Valve, operating at peak performance and ready to withstand demanding process conditions.

Quick Reference: Maintenance Checklist for DN 250 Fisher Valve

Interval	Maintenance Task
Quarterly / Semi-Annual	Check valve stroke; calibrate positioner / I-P transducer as needed
Annually	Inspect actuator internals (diaphragms, seals); inspect trim and packing; lubricate if required
1–3 Years	Perform visual inspection: leaks, broken parts, corrosion
3–5 Years	Open and inspect: replace soft goods (packing, gaskets); inspect / overhaul trim
As Needed	Lapping of metal seats to restore sealing (if leakage observed)
Critical Applications	Engage OEM-certified repair for refurbishment or complex repairs

Why Choose KV Controls for Fisher Valve Repairs?

OEM Expertise: Our technicians are experienced with the full Fisher product range.
Quality Parts: We use genuine components to maintain reliability and warranty integrity.
Fast Turnaround: Our workshop is equipped for quick yet precise repairs.
Comprehensive Support: From diagnostics to testing and final commissioning, we handle the entire process.

Conclusion

When it comes to DN 250 Fisher Valve repairs and ongoing maintenance, KV Controls delivers unmatched expertise. Whether you need emergency repairs, routine servicing, or OEM-certified parts, we ensure your valves continue to operate at their best.