§ 45.153 Through-hull piping: General.
Current through Sep 25, 2026 · Read all of Part 45
(a) All through-hull pipes required by this subpart must be made of steel or material equivalent to the hull in strength and fatigue resistance.
(b) All valves used as shell fittings and all shell fittings on which such valves are mounted must be made of steel, or bronze or other ductile material approved by the Commandant.