Summary of Topics

The Seventh Edition of ANSI/CAN/UL/ULC 1091 dated April 20, 2022 has been issued to reflect the latest ANSI and SCC approval dates and to incorporate the proposal dated September 30, 2019.

1 Scope

1.1 These requirements cover butterfly valves intended for use in piping systems supplying water for fire-protection service.

1.2 The valves covered by these requirements are intended for installation and use in accordance with the Standards for:

1. a) Low, Medium and High Expansion Foam, NFPA 11;

2. b) Installation of Sprinkler Systems, NFPA 13;

3. c) Installation of Standpipe and Hose Systems, NFPA 14;

4. d) Water Spray Fixed Systems for Fire Protection, NFPA 15;

5. e) Foam-Water Sprinkler and Foam-Water Spray Systems, NFPA 16;

6. f) Installation of Stationary Pumps for Fire Protection, NFPA 20;

7. g) Water Tanks for Private Fire Protection, NFPA 22; and

8. h) Installation of Private Fire Service Mains and Their Appurtenances, NFPA 24.