CBI - Certified Building Inspector Practice Test
CBI Plumbing & Mechanical Inspection 2
What is a backflow preventer and where is it required?
Select your answer
A
A device that prevents contaminated water from flowing back into the potable water supply, required at cross-connections
B
A filter on the kitchen faucet
C
A valve that increases water pressure
D
A check valve on the sewer line
Hint
