Midwest Valve Services repairs all types and makes of valves for various process industries such as chemical, refinery, power, ethanol, oil & gas, and many others. Our certified technicians test, repair, and rebuild all type of valves including control valves, pressure relief, gate, globe, check, ball, butterfly, plug, knife gate, boot, diaphragm, shutter, and other types of valves, control valves, tank vent valves, and many others. Utilizing state-of the-art diagnostic, measurement, weld repair, and machining equipment, we provide comprehensive valve repair regardless of valve type, pressure class, or manufacturer. We are National Board certified for repair of safety and relief valves, regardless of manufacturer, media, or pressure class. We offer secure on-line records of survey, testing and repair available through our website. We feature a Mobile Valve Shop repair trailers, on-site rebuilding, and AccuTEST electronic pressure relief valve testing system. We offer OEM assembly available for Anderson Greenwood, and Crosby valves. Emerson LifeCycle certified control valve diagnostic evaluation, repair, and calibration. Valve Actuator Services: We offer local repair and exchange programs for pneumatic, electric, and hydraulic actuation. We offer valve seals, O-ring, and bearing upgrades available for most cylinders. Complete motor operator repair including control electronics, limit / torque switches, gear drives, and motors. Complete hydraulic operator repair including controls, servo valves, cylinders, accumulators, and motors. Trust Certified Technicians Quality Control Experience Code and Insurance Compliance Reliability Maintenance and Planning Expertise Turnaround Success Documentation Shutdown, Turnaround, Outage (STO) Process: Set the test and evaluation scope. Test and evaluate utilizing state-of-the-art equipment and software: Emerson FlowScannerTM and AMS ValveLinkTM