What is the minimum size of a connection point required for a gage glass?

The minimum size of a connection point required for a gage glass is established at 1/2 inch. This specification ensures that the gage glass can accurately reflect the water level within the boiler. A connection point of this size is necessary to allow for sufficient flow and pressure, enabling the gage glass to provide reliable information about the boiler's water levels.

Larger connection points could potentially lead to increased costs and space requirements without significant benefits in terms of performance for typical applications. Therefore, a 1/2 inch connection is a balanced choice, meeting safety and functionality standards essential for proper boiler operation.