CPVC Piping System Resources

Codes, Standards & Approvals

HIGH-VOLUME SPRINKLER SYSTEMS AND LISTED ANTIFREEZE

By: Lainey Liotta September 28th, 2021

Before July 2021, a listed antifreeze approved for use in Ordinary Hazard 1 & 2 sprinkler systems larger than 40 gallons did not exist, even though many of these buildings require a system with significantly more antifreeze. This limitation made it difficult and expensive for antifreeze-based fire sprinkler systems in larger applications to maintain compliance with NFPA requirements.