StacksVerified U.S. regulatory reference

49 CFR §178.255-7

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
  1. (a)All valves, fittings, accessories, safety devices, gauging devices, and the like shall be adequately protected against mechanical damage by a housing closed with a cover plate.
  2. (b)Protective housing shall comply with the requirements under which the tanks are fabricated with respect to design and construction, and shall be designed with a minimum factor of safety of four to withstand loadings in any direction equal to two times the weight of the tank and attachments when filled with water.