Backflow Prevention Practice Exam

What is a common consequence of chatter or noise during the operation of a pressure vacuum breaker?

1. Increased pressure stability

2. Undersized application

3. Potential system failure

4. Improved water flow

The correct answer is: Undersized application

The consequence of chatter or noise during the operation of a pressure vacuum breaker is commonly associated with undersized application. When a pressure vacuum breaker is not appropriately sized for the system, it can cause irregularities in the flow and create pressure fluctuations. These fluctuations may lead to the breaking of the vacuum, resulting in the characteristic noise or chatter. An undersized pressure vacuum breaker may not handle the flow demands of the system effectively, causing it to cycle on and off rapidly or produce noise as the diaphragm in the breaker moves excessively in response to pressure changes. This can not only lead to discomfort due to the noise but also impact the efficiency of the water distribution system. Understanding the correct sizing and application of backflow prevention devices is crucial to ensure smooth operation, avoid chatter or noise, and maintain overall system integrity.