Fixtures & Water HeatersQuestion 173 of 360
The material used for a water heater T&P relief valve discharge pipe must be:
a.any flexible plastic tubing on hand
b.copper only, never plastic
c.cast iron for durability
d.rated for the temperature and pressure of the relief discharge
Explanation
The discharge pipe material must be listed and rated to handle the hot water and pressure that a relief event produces. Ordinary low-temperature tubing can soften or fail. Approved materials include those permitted for hot-water distribution, such as CPVC or copper.
Law Reference: 2022 California Plumbing Code (CPC) §608.5Practice all 360 questions free — no signup required.
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