Plumbing Fixtures and Appliances Flashcards
7 cards from real Master Plumber Exam practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Plumbing Fixtures and Appliances flashcards as text
What is the minimum water closet compartment width required by most US plumbing codes when a wall-mounted toilet is installed?
Answer: 30 inches
Most plumbing codes require a minimum 30-inch wide water closet compartment to allow proper access and use.
A pressure-balancing valve in a shower is required to limit hot water outlet temperature to a maximum of:
Answer: 120°F
Per ASSE 1016 and most plumbing codes, pressure-balancing valves must limit outlet temperature to a maximum of 120°F to prevent scalding.
Which fixture requires a trap with a minimum 3-inch seal depth under most plumbing codes?
Answer: Floor drain subject to evaporation
Floor drains in infrequently used areas may require a 3-inch deep seal trap or a trap primer to prevent seal evaporation.
An interceptor is required ahead of a kitchen sink when the sink serves:
Answer: A commercial kitchen in a food service establishment
Grease interceptors are required before drainage from commercial food service establishments to prevent grease from entering the public sewer.
What type of flush valve mechanism is typically used in a flushometer-valve water closet?
Answer: Direct-flush valve with diaphragm or piston
Flushometer valves use a direct-pressure diaphragm or piston mechanism that opens directly to supply pressure, requiring no tank.
When installing a bidet, the supply fitting must include which protection device to prevent backflow?
Answer: Pressure vacuum breaker or atmospheric vacuum breaker
Bidet supply fittings require a vacuum breaker because the outlet may be submerged, creating a cross-connection risk that requires backflow prevention.
A lavatory installed in a healthcare facility must have a minimum basin size of:
Answer: 17 inches × 14 inches
Healthcare lavatories typically require a minimum basin area of 17 × 14 inches per fixture standards to accommodate hand-washing procedures.