Fixtures & Water HeatersQuestion 170 of 360
Which condition is required at the terminal end of a water heater relief valve discharge pipe?
a.It must not be threaded
b.It must have a threaded cap
c.It must include a shutoff valve
d.It must contain a trap
Explanation
The end of a relief discharge line must not be threaded so it cannot be capped or plugged, which would disable the relief path. No valve or trap may be installed in the line. The pipe must drain by gravity and point downward.
Law Reference: 2022 California Plumbing Code (CPC) §608.5Practice all 360 questions free — no signup required.
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