Plumber Red Seal · Question
A plumber is installing a backflow prevention device on a cross-connection where the contaminant is considered a health hazard. Which type of device would be required at a minimum?
For cross-connections involving a health hazard, a Reduced Pressure Principle (RP) assembly is the minimum required backflow prevention device. DCV assemblies a
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Question: A plumber is installing a backflow prevention device on a cross-connection where the contaminant is considered a health hazard. Which type of device would be required at a minimum?
Answer options: ✅ Reduced Pressure Principle (RP) assembly.
- Double Check Valve (DCV) assembly.
- Atmospheric Vacuum Breaker (AVB).
- Pressure Vacuum Breaker (PVB).
Correct answer: Reduced Pressure Principle (RP) assembly.
Explanation: For cross-connections involving a health hazard, a Reduced Pressure Principle (RP) assembly is the minimum required backflow prevention device. DCV assemblies are for non-health hazards, and AVBs and PVBs are for direct connections to non-potable sources with specific air gap requirements and are not suitable for all health hazard situations.
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