LVS,
Searcing google for valve servicing you will find a number of leads.
In my experience (you are probably located in the US, my location is Scandinavia, Europe) you can roughly divede valve services in 'branches' as follows:
Service for advanced process valves, including control valves, including offshore as a separate branch, including testing, including repair and grinding.
Service for actuators and control equipment, pneumatic and /or electric.
Service for more advanced or larger valves for water mains, hydroelectrical water main valves, turbines and pumps, including blasting and recoating, including valves and pumps for waste-water.
Leakage searching at plant/in field as separate branch?
Some companies are independent, supplying complete maintenance packages for total factories/installations. Some companies owned by valve (or pump) suppliers are supplying services to limited number of brands.
Conclusion: The market and competition exists. The rest is a question about location, your acces to resources and what you can offer competitivly for this market in your location, and if this will give you an acceptable payback.
You could try asking existing suppliers with service departments if they would be interested in outsourching or selling out their service/repair departmens (??)
