ANSI/CAN/UL/ULC 1091:2022

1.1 These requirements cover butterfly valves intended for use in piping systems supplying water for fireprotection service. 1.2 The valves covered by these requirements are intended for installation and use in accordance with the Standards for: a) Low, Medium and High Expansion Foam, NFPA 11; b) Installation of Sprinkler Systems, NFPA 13; c) Installation of Standpipe and Hose Systems, NFPA 14; d) Water Spray Fixed Systems for Fire Protection, NFPA 15; e) Foam-Water Sprinkler and Foam-Water Spray Systems, NFPA 16; f) Installation of Stationary Pumps for Fire Protection, NFPA 20; g) Water Tanks for Private Fire Protection, NFPA 22; and h) Installation of Private Fire Service Mains and Their Appurtenances, NFPA 24.