New York Low Pressure Boiler COF Practice 2025 – All-in-One Guide to Exam Success!

Question: 1 / 495

What is the standard pipe size for a gage cock connection?

1/4"

1/2"

The standard pipe size for a gage cock connection is indeed 1/2". This size is typically used to ensure a proper and secure connection between the pressure gauge and the boiler system. The 1/2" size strikes a balance between allowing sufficient flow for accurate pressure readings and fitting the necessary equipment without creating excessive space or complexity in the piping layout.

Using a larger size, such as 3/4" or 1", could lead to potential inaccuracies due to the increased volume of liquid that may be held within the larger pipe, causing delays in responding to changes in pressure. On the other hand, a 1/4" connection may be too restrictive, potentially leading to blocked readings or mechanical issues. Therefore, 1/2" is considered the optimal choice for gage cock connections in low-pressure boiler systems.

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3/4"

1"

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