Rhode Island Journeyman Plumber Practice Exam

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Study for the Rhode Island Journeyman Plumber Exam. Prepare with flashcards and multiple choice questions with detailed explanations. Ace your exam!

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How many gallons of water does a 60 PSI pressure system typically provide to a bathroom sink?

2.5 GPM
3.0 GPM
4.5 GPM
7.0 GPM

The correct answer is: 4.5 GPM

In a typical plumbing scenario, a 60 PSI pressure system generally provides a flow rate that can vary based on several factors, including the fixture type and the system's design. For a bathroom sink, the expected flow rate aligns with the chosen answer of 4.5 gallons per minute (GPM). Many modern faucet fixtures are designed to deliver around 1.5 to 2.2 GPM at 60 PSI, which means that the capacity of the entire system can effectively produce a higher water flow rate. This is particularly relevant in the context of plumbing codes and water efficiency standards that allow fixtures to be rated for higher flow rates in certain conditions. Understanding the specific design and specifications of the plumbing system is crucial. For example, while an individual faucet may limit its flow rate, the overall system's pressure can allow for increased water delivery, confirming that a 4.5 GPM flow is within the realm of possibility for a well-designed and adequately pressurized bathroom sink.