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:

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.