NM CID MM-1 Practice Questions - New Mexico CID MM-1 Plumbing Examination Exam

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A pressure-reducing valve on the building water service creates a closed system. UPC 2021 Section 608.3 requires thermal-expansion control by:

Removing the water-heater T&P valve Installing a hose-bibb vacuum breaker only Raising the PRV setpoint above 80 psi A listed expansion tank or other approved device sized for the heated-water volume

Correct Answer:

A listed expansion tank or other approved device sized for the heated-water volume

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