Reconditioned sprinklers are allowed in new or existing systems?

• A. Allowed in existing systems
• B. Not allowed in new or existing systems
• C. Allowed in new systems only
• D. Only for temporary use

Answer: (B)

Reconditioned sprinklers are not allowed in NFPA 13R systems because the listing and performance of a sprinkler are tied to factory-new components. Each sprinkler’s temperature rating, discharge characteristics, and reliability depend on its original, unaltered factory construction. Reconditioning can change critical features (such as sealing, orifice size, or heat-responsive elements) and may void the listing, leading to unpredictable response and hydraulic behavior. To ensure the system behaves as designed and remains compliant, only new, listed sprinklers may be used in either new installations or existing systems. If a sprinkler needs replacement, choose an identical model that matches the original listing and install it according to NFPA 13R and the authority having jurisdiction.