The 1” Complete Repair Kit 375 is a comprehensive rubber replacement solution for Zurn double check backflow preventers (model 375 and 375XL). Designed to restore all rubber components in the 1” assembly, this kit ensures proper sealing and performance of both check valves, maintaining safe operation and compliance with ASSE® 1015 and CSA® B64.5 standards. Ideal for routine maintenance or minor repairs, it allows users to refresh system performance without replacing metal parts.