What is the minimum water pressure required at a fixture in most plumbing codes?

8 psi is the minimum static pressure required at any fixture under most plumbing codes.

What is the maximum static water pressure allowed in a building's water supply system before a pressure-reducing valve is required?

80 psi is the maximum allowable static pressure; a pressure-reducing valve (PRV) must be installed if pressure exceeds this.

What is water hammer, and what device is used to prevent it?

Water hammer is the hydraulic shock caused by a sudden stop of water flow. It is prevented by installing air chambers or water hammer arrestors.

What term describes the loss of pressure caused by friction as water travels through a pipe?

Friction loss (or head loss) is the reduction in water pressure due to resistance as water flows through pipes, fittings, and valves.

For every 1 psi of pressure, how many feet of vertical elevation can water be lifted?

1 psi of pressure can lift water approximately 2.31 feet of vertical elevation.

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Water Supply – Plumber Journeyman Exam

Master water supply concepts tested on the Plumber Journeyman Exam with 28 targeted flashcards. Topics include pipe sizing, pressure requirements, fixture units, backflow prevention, and water distribution fundamentals essential for passing your journeyman licensing exam.

28 cards Intermediate Pressure & Flow Pipe Sizing & Materials Fixture Units & Demand Backflow Prevention Water Distribution Components

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