How should a steam gauge be properly mounted to a boiler?

The proper mounting of a steam gauge to a boiler involves the use of a siphon tube, an isolation valve, and a test connection. The siphon tube is crucial because it helps to protect the gauge from high-temperature steam that could potentially damage it. The tube contains a liquid, typically water, which acts as a cooling barrier, allowing the gauge to accurately read the steam pressure without being directly affected by the extreme temperatures of the steam.

The isolation valve is also an important component as it allows for maintenance or replacement of the gauge without needing to drain the entire system. It also provides a way to isolate the gauge from the boiler pressure, ensuring that any work done does not affect boiler operations.

A test connection is essential for verifying the accuracy of the gauge by allowing for pressure checks to be done without removing the gauge itself. This contributes to the overall safety and reliability of the boiler system by ensuring that the readings from the gauge are correct and up-to-date.