What is the main function of a pipe siphon in a boiler?

The main function of a pipe siphon in a boiler is to maintain a water seal between the steam and the Bourdon tube. The siphon is designed to create a barrier of water that prevents steam from directly entering the pressure measurement device, such as a Bourdon tube pressure gauge. This is essential because steam can cause inaccuracies in pressure readings, potentially leading to erroneous operational decisions. The water in the siphon acts as a protective layer, ensuring that only the water pressure is transmitted through the tube to the gauge, allowing for accurate measurements of steam pressure within the boiler system.

Other functions attributed to different components in boiler systems, such as excess water storage or enhancing combustion efficiency, do not involve the specific role of maintaining a seal for pressure measurement devices. Hence, the role of the siphon is distinctive and crucial for ensuring reliable operation and safety in relation to pressure monitoring in the boiler.