The five DVDs in this series provide a thorough basic-training program in municipal water distribution system operation and equipment. Designed for new water distribution operators and students, the DVDs explain five primary distribution topics:
1. Water Mains and Fittings
Viewers learn about the many types of pipe currently in use and the advantages and disadvantages of each type. The video covers internal pressures and external load ratings, installation, joining, fittings, tapping, pipe handling safety, corrosion, pipe rehabilitation, pipe inspection, maintenance, and recordkeeping. 15 minutes (no. 64323).
2. Valves
Viewers learn the many types of distribution valves and where in a distribution system each valve type is chosen for use. The DVD covers correct procedures for safely opening and closing valves, valve connections, water hammer and backflow prevention, valve installation, inspection, maintenance, repairs, and recordkeeping. 16 minutes (no. 64324).
3. Hydrants
This DVD explains the importance of maintaining fire hydrant reliability. It describes hydrant uses, including flushing, flow testing, and filling water tank trucks. Viewers learn the different types of wet-barrel and dry-barrel fire hydrants and their operation, typical hydrant design, hydrant part names, correct procedure for opening and closing hydrants, auxiliary hydrant valves, inspection, installation, maintenance, repairs, and recordkeeping. 13 minutes (no. 64322).
4. Pumps and Motors
This DVD explains many types of pumps used in water distribution systems, with emphasis on centrifugal pumps. Viewers learn about volute, diffuser, single and double suction, axial flow, mixed-flow, vertical turbine, submersible, deep-well, in-line booster, jet, and other pumps. Operators are shown various types and operation of electric motors used for water pumps, plus installation, inspection, maintenance, and recordkeeping. 12 minutes (no. 64326).
5. Services and Meters
Viewers learn water service connections, service line sizing, commonly used pipe materials, meter types, meter sizing and installation, types of meter boxes and pits, and shutoff valves (or curb stops). The DVD also instructs in service line maintenance, repairs, how to thaw frozen service lines, locating leaks, manual and automatic or remote meter reading, meter inspection for damage or tampering, meter testing, and recordkeeping. 12 minutes (no. 64325).