Description
Objectives
Learning Objective 1 – Determine the factors that affect the sizing of water supply systems.
- Determine how temperature and density affect water supply systems.
- Determine how flow and friction affect water supply systems.
Learning Objective 2 = Size a given water supply system for different acceptable flow rates and calculate pressure drops in a given water system.
- Determine how to establish system requirements for a given water supply system.
- Determine how to calculate demand for a given water supply system.
- Determine the correct pipe size based on system and supply pressures in a given water supply system.
- Determine how to calculate system losses in a given water supply system.
Learning Objective 3 – Describe the six basic backflow-prevention devices and the hazards they are designed to prevent.
- Describe the principle of backflow due to back siphonage and back pressure.
- Describe when and how to install air gaps.
- Describe when and how to install atmospheric vacuum breakers.
- Describe when and how to install pressuretype vacuum breakers.
- Describe when and how to install dual-check valve backflow preventer assemblies.
- Describe when and how to install doublecheck valve assemblies.
- Describe when and how to install reduced- pressure zone principle backflow preventer assemblies.
- Describe when and how to install specialty backflow preventers.
- Describe when and how to troubleshoot and repair backflow preventers.
Performance Tasks
Performance Task 1 (Learning Objective 2) – Using design information provided by the instructor, lay out a water supply system and calculate developed lengths of branches.
Performance Task 2 (Learning Objective 3) – Install common types of backflow preventers
