What is the maximum connection for a surface blow-down?

The maximum connection size for a surface blow-down is 2 1/2 inches. This specification is crucial in the design and operation of boiler systems, as it pertains to the proper removal of sediment and impurities from the surface of the water. The surface blow-down helps to maintain water quality and the efficiency of the boiler by removing foam and other contaminants.

Using a connection size larger than 2 1/2 inches could lead to excessive flow rates, which may not be conducive to the effective operation of the blow-down system, potentially causing turbulence and reducing the efficiency of the blow-down process. Therefore, the 2 1/2-inch maximum is established to ensure optimal performance and safe operation.