The Cost of a Poorly Performing Control Valve
A sticking, hunting, or dead-banded control valve doesn't just waste energy — it destabilises entire process loops, increases maintenance intervals, and can force costly unplanned shutdowns. M Expert Engineering's control valve service covers mechanical overhaul, positioner calibration, and digital valve diagnostics from a single source.
Service Scope
- As-found signature testing and condition report
- Body disassembly, trim inspection and replacement
- Packing replacement (live-loaded, low-emission options)
- Actuator overhaul: pneumatic, electric, hydraulic
- Positioner calibration and configuration (HART, FOUNDATION Fieldbus, Profibus)
- Partial stroke testing (PST) for on/off valves in SIL loops
- Seat leakage testing to ANSI FCI 70-2 or IEC 60534-4
- Reassembly and full stroke test before return
Brands & Types
We work with all major brands including Fisher/Emerson, Flowserve, Metso/Neles, Samson, Rotork, and others. Globe, ball, butterfly, rotary, and eccentric plug valves.
Quality & Standards
All M Expert Engineering services are performed to applicable international standards (API, ASME, EN ISO) with full documentation. Ask for a copy of our quality procedure for this service.