New York Low Pressure Boiler COF Practice 2025 - Free Practice Questions and Study Guide

Question: 1 / 495

What is the purpose of installing a muffler on a safety or relief valve?

Reduce noise from the valve

Prevent back pressure on a boiler

Installing a muffler on a safety or relief valve primarily serves to reduce noise generated during the operation of the valve. When a relief valve opens to relieve excess pressure, it can create a loud noise due to the high-velocity steam or gas escaping. A muffler effectively dampens this sound, creating a quieter environment around the boiler.

While one may consider other factors like back pressure, efficiency, and durability, the muffler’s primary role is far more focused on noise reduction. Back pressure pertains more to the operational conditions of the system rather than the function of a muffler directly. Therefore, while the muffler can contribute to a more pleasant operational environment, it is not designed to directly influence back pressure, valve efficiency, or enhance durability, which involves other aspects of design and operation in these systems.

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Improve valve efficiency

Enhance valve durability

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