Control Valve Specialists Industrial history kept alive by Ritter CNC - Computer Numeric Control Forums Control Valve Specialists, Inc. (CVS) became a reality in Houma, Louisiana in 1973 and has grown to become a leader in the field of control valve repair and parts fabrication. CVS has branches in Baton Rouge, Louisiana and in Theodore, Alabama. CVS has a reputation as being a company with many different facets and unending possibilities. CVS offers a pick-up and delivery service that can be used for large turnarounds. CVS has a fleet of trucks and drivers ready to make pick-ups or deliveries 24 hours a day 7days a week.