New York Low Pressure Boiler COF Practice

What is the minimum face size of a non-mercury gage?

1. 3 inches

2. 2-1/2 inches

3. 2-1/4 inches

4. 2 inches

The correct answer is: 2-1/4 inches

The minimum face size of a non-mercury gauge is established to ensure accurate readings and visibility. A face size of 2-1/4 inches offers a good compromise between size, practicality, and readability in most boiler applications. It allows users to easily observe the pressure levels without straining, which is critical for maintaining safety and operational efficiency in boiler systems. Choosing a face size smaller than this could lead to difficulties in reading the gauge accurately, especially in environments where visibility may be compromised. Additionally, gauges that are too small may not comply with regulatory standards for equipment used in boiler operations, potentially leading to safety hazards or operational inefficiencies. Thus, the 2-1/4 inch standard is selected to ensure both ease of use and adherence to safety regulations.