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

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A water-supply isometric lists 62 psi at the meter, a 6 psi meter loss, a 10 psi reduced-pressure backflow-preventer loss, 30 feet of elevation to the highest flushometer closet, and a 15 psi residual requirement at that closet. How much pressure remains to overcome pipe friction?

5.0 psi 18.0 psi 31.0 psi 44.0 psi

Correct Answer:

18.0 psi

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