What must direct-fired vaporizers be permanently marked with?

Direct-fired vaporizers must be permanently marked with the markings required by the ASME (American Society of Mechanical Engineers) Code. This requirement ensures that the equipment complies with established safety and operational standards, which are crucial for maintaining safety in the usage of propane gas systems. The ASME Code provides regulations that govern the design, construction, and inspection of equipment to ensure its reliability and safety during operation.

While it may seem reasonable to include other markings such as the manufacturer’s name or the rated heat input, such details do not replace the need for compliance with ASME Code. Markings defined by this code often include important information necessary for safe operation, maintenance, and inspection processes, which are integral to preventing hazards associated with propane gas usage.