StacksVerified U.S. regulatory reference

49 CFR §178.255-6

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
  1. (a)When installed, gauging, loading and air inlet devices, including their valves, shall be provided with adequate means for their secure closure; and means shall also be provided for the closing of pipe connections of valves.
  2. (b)Interior heater coils, if installed, must be of extra heavy pipe and so constructed that breaking off of exterior connections will not cause leakage of tanks.