22 00 00 Plumbing 22 00 50 Pipe & Pipe Fittings 23 09 13 HVAC Instruments & Controls 23 09 14 Valves 23 22 16 Steam & Steam Condensate Specialties

22 30 00 Plumbing Equipment 23 05 48 Vibration & Seismic Controls for HVAC 23 20 01 Pumps 23 21 16 Hydronic Specialties 23 22 16 Steam & Steam Condensate Specialties 23 52 10 Boilers 23 57 00 Heat Exchangers for HVAC 23 65 00 Cooling Towers 26 29 23 Variable Frequency Drives