WALMART MAINTENANCE Plumbing and Facilities 5

Question 1

A Walmart restroom expansion tank on a water heater is required when the building has which type of valve on the main supply?

Accepted Answer

A pressure-reducing valve (PRV) creating a closed system

Answer

A pressure-reducing valve creates a closed system where thermal expansion has nowhere to go, requiring an expansion tank to prevent pressure buildup.

Question 2

During a facility walk, a maintenance technician notices efflorescence (white mineral deposits) on a concrete wall near a buried pipe. This most likely indicates:

Accepted Answer

A slow water leak saturating the surrounding soil and concrete

Answer

Efflorescence on concrete walls near buried pipes is a classic sign of water infiltration, indicating a possible underground pipe leak.

Question 3

A Walmart technician needs to join a copper pipe to a CPVC pipe. What is the correct method?

Accepted Answer

Use a copper-to-CPVC transition fitting designed for this connection

Answer

Copper and CPVC require a manufacturer-approved dielectric or transition fitting because they cannot be directly soldered or cemented together.

Question 4

What is the purpose of a vent stack in a Walmart store's plumbing system?

Accepted Answer

To allow air into the drain system, preventing siphoning of P-traps

Answer

Vent stacks allow air to enter the drainage system, maintaining atmospheric pressure so that P-traps are not siphoned dry.

Question 5

A high-traffic Walmart restroom uses flushometer valves instead of tank-type toilets. What is a key maintenance advantage of flushometer valves?

Accepted Answer

They reset faster and handle continuous heavy use better than gravity-tank toilets

Answer

Flushometer valves flush directly from the supply line and reset in seconds, making them ideal for high-traffic commercial restrooms.

WALMART MAINTENANCE Practice Test

WALMART MAINTENANCE Practice Test

WALMART MAINTENANCE Plumbing and Facilities 5