A boiler operated at pressures not exceeding 15 PSI for steam is classified as what type of boiler?

A boiler that operates at pressures not exceeding 15 PSI for steam is classified as a low pressure steam heating boiler. This classification is based on the operating pressure, which determines the heat generation and distribution capabilities of the boiler.

In many plumbing and HVAC contexts, the distinction between high and low pressure is significant. Low pressure steam boilers are designed for residential and light industrial heating applications where temperatures and pressures remain relatively modest, making them safer and more efficient for those environments. The American Society of Mechanical Engineers (ASME) has defined low pressure steam as that which does not exceed 15 PSI, which aligns with this classification.

This understanding of pressure classifications is crucial for compliance with safety codes and regulations, ensuring that equipment is used within its operational limits and is appropriate for the specific applications intended. It helps plumbing contractors assess system needs correctly and select appropriate equipment for their projects, ensuring safe and reliable operation.