ASME BPVC Section IV, 2025 Edition provides comprehensive rules for the construction of heating boilers, including requirements for materials, design, fabrication, welding, brazing, inspection, testing, marking, controls, installation, and overpressure protection.
The publication covers boilers constructed from wrought materials, cast iron, cast aluminum, and other approved materials, as well as potable-water heaters, modular boilers, vacuum boilers, feedwater economizers, and related certification requirements. It includes mandatory and nonmandatory appendices with referenced standards, manufacturer forms, terminology, quality control guidance, unit conversion guidance, and calculation examples.
Application Scope: Use by boiler manufacturers, engineers, inspectors, fabricators, contractors, certification personnel, and organizations involved in the design, construction, inspection, testing, installation, and regulatory compliance of heating boilers and potable-water heating equipment.
