Plumber Red Seal · Question
A standard outdoor hose bibb is a common cross-connection hazard. What is the simplest device required to provide adequate back-siphonage protection?
A hose bibb vacuum breaker is a simple, self-acting device that screws onto the hose bibb's threads. It prevents contaminated water from a hose from being sipho
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Question: A standard outdoor hose bibb is a common cross-connection hazard. What is the simplest device required to provide adequate back-siphonage protection?
Answer options:
- A gate valve
- An in-line spring check valve ✅ A hose bibb vacuum breaker (HBVB)
- An air gap
Correct answer: A hose bibb vacuum breaker (HBVB)
Explanation: A hose bibb vacuum breaker is a simple, self-acting device that screws onto the hose bibb's threads. It prevents contaminated water from a hose from being siphoned back into the potable water supply if a pressure drop occurs. It is the standard protection for this application.
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