Journeyman Plumber ExamFixtures, Faucets, and Other AppliancesHard
A plumber is installing a single-lever kitchen faucet with an integral sprayer. The local jurisdiction follows the Uniform Plumbing Code (UPC). What is the minimum required flow rate for this kitchen faucet, measured in gallons per minute (GPM)?
- A2.0 GPM
- B2.2 GPM
- C1.8 GPM
- D2.5 GPM
Show answer & explanationAnswer & explanation
Correct answer: C. 1.8 GPM
Federal regulations (Energy Policy Act of 1992) and most current plumbing codes (UPC, IPC) set the maximum flow rate for kitchen faucets at 1.8 GPM (gallons per minute) at 60 psi. Some codes allow for a temporary flow increase feature, but the default maximum is 1.8 GPM.
Why the other options are wrong
- A. 2.0 GPM was a common maximum in older standards, but has been superseded by stricter regulations.
- B. 2.2 GPM is the maximum for lavatory (bathroom sink) faucets and showerheads, not kitchen faucets.
- D. 2.5 GPM was a much older standard for faucets and showerheads, now considered inefficient.
Kitchen Faucet Flow Rate (GPM)
The maximum volume of water that can flow out of a kitchen faucet per minute, regulated by federal and local plumbing codes.
- Aims to conserve water and energy.
- Measured in gallons per minute (GPM) at a specific pressure (e.g., 60 psi).
- Current federal standard is 1.8 GPM for kitchen faucets.
Memory trick: Different fixtures have different 'speed limits' for water.