Boilers are required to have how many pressure gauges?

Boilers typically require at least one pressure gauge to measure the internal pressure of the boiler system accurately. This gauge serves a critical role in monitoring the safety and efficiency of the boiler operation by providing real-time readings that help prevent potentially hazardous situations due to overpressure.

In many installations, particularly for low-pressure boilers, a single pressure gauge is sufficient to ensure that operators can effectively monitor the system. It's designed to offer clear visibility into the operational pressures and can help in performing maintenance and troubleshooting.

While there are scenarios where more than one gauge might be beneficial—such as for high-pressure systems, where two gauges may be installed for redundancy and accuracy—the standard requirement for most boilers, particularly those operating at low pressure, is just one gauge. The necessity of multiple gauges often depends on specific code requirements or operational practices within particular facilities, but the simplest requirement is one gauge.