10 44 00 Fire Protection Specialties 21 00 00 Fire Suppression 21 01 00 Operation and Maintenance of Fire Suppression 21 09 00 Instrumentation and Control for Fire-Suppression Systems 21 11 00 Facility Fire-Suppression Water-Service Piping 21 13 00 Fire-Suppression Sprinkler Systems 23 23 00 Refrigerant Piping

21 00 00 Fire Suppression 21 01 00 Operation and Maintenance of Fire Suppression 21 10 00 Water-Based Fire-Suppression Systems 21 12 00 Fire-Suppression Standpipes 21 13 00 Fire-Suppression Sprinkler Systems 21 16 00 Fire-Suppression Pressure Maintenance Pumps 21 30 00 Fire Pumps 21 31 00 Centrifugal Fire Pumps 21 32 00 Vertical-Turbine Fire Pumps