NV C-1 Plumbing And Heating Practice Questions - Nevada C-1 Plumbing And Heating Contractor Examination Exam

The pressure relief valve on a hot-water heating boiler must be which of the following?

A hose-bibb vacuum breaker piped to a floor sink An ASME-rated relief valve set at or below the boiler’s maximum allowable working pressure A temperature-only relief valve set at 140°F A check valve in the boiler feed line

Correct Answer:

An ASME-rated relief valve set at or below the boiler’s maximum allowable working pressure

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