Repair & Services  National Utilities offers repair, calibration, and other services. Many are performed right in our facility. These services are available on brands we sell and do not sell. Evaluation is almost always free. Our Calibration capabilities include: Gauges - pressure transmitters and switches - temperature switches and transmitters  Our repair capabilities include: Heat exchangers - valves - pneumatic actuators - gauges - cylinders - flowmeters Our services capabilities include: Diaphragm seal and gauge filling - valve and actuator assembly/testing - limit switch and positioner assembly/testing - oxygen cleaning - heat exchanger cleaning |