A residential property is being constructed with a dual-check valve for backflow prevention. The installer is unsure about the installation height of the valve. What is the minimum installation height required for the dual-check valve according to the 2024 International Residential Code?
- A6 inches above the highest point of the backflow preventer
- 12 inches above the highest point of the backflow preventer
- C18 inches above the highest point of the backflow preventer
- D24 inches above the highest point of the backflow preventer
Exam tip
Always check the specific requirements for backflow prevention devices, as they can vary based on the type of device and the application.
Why B is correct
The 2024 International Residential Code requires that backflow prevention devices be installed at least 12 inches above the highest point of the backflow preventer. This ensures proper operation and prevents siphonage.