Gas PipingQuestion 102 of 120
A line pressure regulator is installed on a 2 psi system serving a residence. Which requirement applies to that regulator?
a.The shutoff valve must be installed downstream of the regulator only
b.The regulator vent must terminate outdoors where it cannot be blocked, and a shutoff valve must be accessible upstream of the regulator
c.The vent may terminate in any concealed space as long as it points down
d.No overpressure protection is needed because the utility regulator handles it
Explanation
A line regulator that requires venting must have its vent piped to the outdoors, terminated to prevent water and insect entry, and an accessible shutoff valve must be located upstream so the regulator can be isolated for service. Venting into a concealed space would discharge gas inside the building on a diaphragm failure, and downstream overpressure protection is required in addition to any utility regulator.
Law Reference: IFGC §410Practice all 120 questions free — no signup required.
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