What is the typical operating pressure for low-pressure steam boilers?

In the context of low-pressure steam boilers, the typical operating pressure is 15 PSIG. This standard is established because low-pressure steam systems typically operate at pressures below 15 PSIG to ensure safe and efficient operation for various applications, including space heating and domestic hot water production.

Operating at this pressure allows for the safe management of steam output, ensuring that the system can effectively transfer heat without risking overpressure scenarios that could lead to equipment failure or safety hazards. The 15 PSIG designation also aligns with regulatory definitions for low-pressure steam, which often specifies a maximum of 15 PSIG to classify a system as low-pressure.

Understanding this operating pressure is crucial for gas technicians, as it helps them in the installation, maintenance, and troubleshooting of low-pressure steam systems within the established safety guidelines and operational parameters. It is also important to note that higher pressures, such as those represented by the other choices, typically categorize systems as medium or high-pressure boilers, which have different operational characteristics and safety requirements.