SC Plumber Contractor Practice Questions - South Carolina Plumber Contractor Examination Exam

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A storage water heater supplied from the bottom of the tank, where the storage tank is above the fixture outlets it serves, requires which additional protection?

A vacuum relief valve An atmospheric vacuum breaker on every fixture A 2-inch vent through the roof from the tank A dielectric union on the T&P discharge

Correct Answer:

A vacuum relief valve

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