Which pressure test results must be included on installation tags?

• A. Temperature reading
• B. Static and flowing pressure of the main drain test taken at the riser or lead-in
• C. Building number
• D. License number

Answer: (B)

Critical hydraulic test data must be documented on installation tags so the system’s performance can be verified. Specifically, the static pressure and the flowing pressure of the main drain test taken at the riser or lead-in are recorded. The static pressure shows the pressure when no water is flowing, while the flowing pressure shows the pressure when water is actually being drawn through the system. Together, these readings demonstrate that the water supply and piping can deliver adequate pressure under demand and help confirm there are no significant leaks or blockages. Other items like a temperature reading or building and license numbers aren’t pressure-test results and belong on other documentation, not on the main installation tag.