StacksVerified U.S. regulatory reference

46 CFR §108.437

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
  1. (a)The minimum pipe size for the initial charge must meet table 108.441 and the discharge of the required amount of CO2 must be completed within 2 minutes.
  2. (b)The minimum pipe size for the delayed discharge must be at least 1.25 centimeters ( 1/2 inch) standard pipe.
  3. (c)The pipe used for the initial discharge must not be used for the delayed discharge, except systems having a volume of less than 57 cubic meters (2,000 cubic feet).