UL 1091

Standard for Butterfly Valves for Fire-Protection Service

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:

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.


  • Edition Number: 6
  • Edition Date: 06/03/2004
  • Price Code: A
  • Type: ulstd
  • ANSI Approved:
  • DOD Approved: