StacksVerified U.S. regulatory reference

40 CFR §1090.1565

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
  1. (a)Except for pumps dedicated to heavy-duty vehicles, any pump installation used for dispensing liquefied petroleum gas into motor vehicles must have a nozzle that has no greater than 2.0 cm 3 dead space from which liquefied petroleum gas will be released when the nozzle disconnects from the vehicle.
  2. (b)Determine the volume of the nozzle cavity using calculations based on the geometric shape of the nozzle, with an assumed flat surface where the nozzle face seals against the vehicle.