New York Low Pressure Boiler COF Practice

What is the maximum size of the pipe used for surface blow off?

1. 2 inches

2. 2-1/2 inches

3. 3 inches

4. 4 inches

The correct answer is: 2-1/2 inches

The maximum size of the pipe used for surface blow off is 2-1/2 inches. This specification is important because surface blow off serves to remove impurities and floating debris from the surface of the boiler water, which can help maintain water quality and prevent issues like foaming or scaling. A pipe size of 2-1/2 inches strikes a balance between allowing sufficient flow to effectively perform this task and maintaining safe operational standards within a low-pressure boiler system. Larger pipes may inadvertently allow excessive water discharge or create safety hazards, while smaller pipes may not provide enough flow to adequately remove contaminants. Understanding this maximum size helps ensure the proper maintenance of boiler water quality, contributing to safe and efficient boiler operation.