New York Low Pressure Boiler COF Practice

What is the maximum allowable gage magnitude of 3 psig not to exceed?

1. 1/4" increments @ 4.5 psig to 6 psig

2. 1/8" increments @ 0 psig to 3 psig

3. 1/10" increments @ 4.5 psig to 6 psig

4. 1/2" increments @ 3 psig to 5 psig

The correct answer is: 1/10" increments @ 4.5 psig to 6 psig

The correct answer involves understanding the specifications for pressure gage increments and ensuring they provide accurate measurements within a specified range. The choice that indicates "1/10" increments @ 4.5 psig to 6 psig" is appropriate for high precision and is relevant for low-pressure boiler applications, where it is crucial to maintain accuracy given that small fluctuations in pressure can affect safety and performance. Maintaining small increments, like 1/10", allows for a more precise reading of pressure that is critical when operating near maximum allowable limits. This precision is vital as it helps operators monitor the system closely, ensuring the pressure does not exceed safe operating thresholds. In the context of low-pressure boilers, adhering to these specifications is paramount to avoid overpressure situations, which can lead to equipment failure or safety hazards. The other choices do not offer the same level of refinement or are broader ranges that may not adequately ensure precision in monitoring boiler pressure within the critical low-pressure parameters.