What are the pressure limits for a miniature boiler?

The correct choice regarding the pressure limits for a miniature boiler aligns with standard definitions found in boiler regulations and plumbing codes. Miniature boilers are typically classified based on their operational pressure and steam output.

The range of 15 to 100 psi is widely recognized in plumbing and mechanical engineering. This classification helps ensure safe operation and compliance with industry standards, which stipulate limitations to prevent hazardous conditions. In this context, when referring to miniature boilers specifically, the pressure range captures the operational characteristics that allow for efficient functioning while maintaining safety.

It's important to note that other ranges specified in the different options exceed typical operational pressures for miniature boilers or fall below the minimum operational requirements. Understanding these limits is crucial for ensuring the safety and efficiency of plumbing and heating systems using such equipment.