NM CID MM-2 Practice Questions - New Mexico CID MM-2 Natural Gas Fitting Examination Exam

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A house piping system operates at about 7 inches water column. Which statement is correct for UMC fuel-gas test and sizing language?

7 inches water column is the same as 2 psi 7 inches water column always requires a 60 psi welded-pipe test 7 inches water column is a low-pressure utilization pressure, well below the 14-inch water-column threshold used to trigger the higher test Water-column pressure is used only for hydronic boilers

Correct Answer:

7 inches water column is a low-pressure utilization pressure, well below the 14-inch water-column threshold used to trigger the higher test

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