Code of Federal Regulations · Section
§ 153.368 — Pressure-vacuum Valves
46 C.F.R. § 153.368
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(a) The pressure side of a required pressure-vacuum relief valve must begin to open only at a pressure exceeding 3.5 kPa gauge (approx. 0.5 psig).
(b) A pressure-vacuum relief valve must meet the requirements of Subpart 162.017 of this chapter.
Authorizing Statute
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Administration and enforcement33 U.S.C. § 1903
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General regulatory authority49 U.S.C. § 5103
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Regulations46 U.S.C. § 3703