For fire protection systems, which backflow assemblies may be used?

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Multiple Choice

For fire protection systems, which backflow assemblies may be used?

Explanation:
In fire protection, backflow prevention must stop water from the sprinkler system from flowing back into the potable supply. An air gap provides a simple, fail-safe physical separation with no moving parts, which makes it a very reliable option in many installations. A reduced-pressure-zone (RPZ) assembly offers higher protection for cross-connections that pose a greater contamination risk; it uses two check valves and a relief valve to prevent backflow and requires regular testing. The Reduced-Pressure Detector Assembly (RPDA) is a detector variant used with RPZ systems to monitor and alarm if backflow or leakage occurs. Therefore, the allowed options for fire systems include either an air gap or RPZ/RPBA, and the RPDA can be used with fire systems as well. This combination covers the common, code-acceptable backflow prevention approaches for fire protection. Options that would limit to only one type don’t reflect the range of permissible devices for fire protection backflow prevention.

In fire protection, backflow prevention must stop water from the sprinkler system from flowing back into the potable supply. An air gap provides a simple, fail-safe physical separation with no moving parts, which makes it a very reliable option in many installations. A reduced-pressure-zone (RPZ) assembly offers higher protection for cross-connections that pose a greater contamination risk; it uses two check valves and a relief valve to prevent backflow and requires regular testing. The Reduced-Pressure Detector Assembly (RPDA) is a detector variant used with RPZ systems to monitor and alarm if backflow or leakage occurs.

Therefore, the allowed options for fire systems include either an air gap or RPZ/RPBA, and the RPDA can be used with fire systems as well. This combination covers the common, code-acceptable backflow prevention approaches for fire protection.

Options that would limit to only one type don’t reflect the range of permissible devices for fire protection backflow prevention.

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