Water Supply & DistributionQuestion 20 of 360
A janitor's service sink has a hose thread faucet used with cleaning chemicals. What is the simplest code-recognized protection against back-siphonage at that outlet?
a.A gate valve upstream
b.A pressure regulator
c.A larger drain
d.A hose connection (hose bibb) vacuum breaker on the outlet
Explanation
A hose connection (hose bibb) vacuum breaker installed on the threaded outlet protects against back-siphonage where a hose could submerge in chemicals. A gate valve, pressure regulator, and larger drain do not provide backflow protection at the hose outlet.
Law Reference: 2022 California Plumbing Code (CPC) §603.0Practice all 360 questions free — no signup required.
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