5704.2.7.5.7 Protection against vapor release.
FC § 5704.2.7.5.7
Tank openings provided for purposes of vapor recovery shall be protected against vapor release by means of a spring-loaded check valve or dry-break connections, or other approved device, unless the opening is a pipe connected to a vapor processing system. Openings designed for combined fill and vapor recovery shall also be protected against vapor release unless connection of the liquid delivery line to the fill pipe simultaneously connects the vapor recovery line. Connections shall be vapor-tight.













