- Control and Valve Installers and Repairers, Except Mechanical Door
- Water Meter Installer
- Water Meter Mechanic
- Water Plant Maintenance Mechanic
- Water Valve Mechanic
- Water Valve Repairer
- Heating, Ventilation, and Air Conditioning Control Technician
- I and E Technician
- Instrument and Controls Technician
- Instrument and Electrical Technician
- Instrument Control and Electrical Technician
- Valve and Regulator Repairer
- Cut seats to receive new orifices, tap inspection ports, and perform other repairs to salvage usable materials, using hand tools and machine tools.
- Record maintenance information, including test results, material usage, and repairs made.
- Cut materials according to specifications or needs.