- 05800 - Expansion Control
- 07 95 00 - Expansion Control
- 15180 - Heating and Cooling Piping
- 15190 - Fuel Piping
- 15210 - Process Air And Gas Piping
- 15550 - Breechings, Chimneys, and Stacks
- 15800 - Air Distribution
- 15810 - Ducts
- 22 15 13 - General Service Compressed-Air Piping
- 22 15 19 - General Service Packaged Air Compressors and Receivers
- 22 60 00 - GAS AND VACUUM SYSTEMS FOR LABORATORY AND HEALTHCARE FACILITIES
- 22 61 13 - Compressed-Air Piping for Laboratory and Healthcare Facilities
- 22 61 19 - Compressed-Air Equipment for Laboratory and Healthcare Facilities
- 22 62 13 - Vacuum Piping for Laboratory and Healthcare Facilities
- 22 62 19 - Vacuum Equipment for Laboratory and Healthcare Facilities
- 22 63 00 - Gas Systems for Laboratory and Healthcare Facilities
- 22 63 13 - Gas Piping for Laboratory and Healthcare Facilities
- 23 10 00 - FACILITY FUEL SYSTEMS
- 23 11 00 - Facility Fuel Piping
- 23 11 13 - Facility Fuel-Oil Piping
- 23 11 23 - Facility Natural-Gas Piping
- 23 11 26 - Facility Liquid-Petroleum Gas Piping
- 23 12 13 - Facility Fuel-Oil Pumps
- 23 20 00 - HVAC PIPING AND PUMPS
- 23 21 13 - Hydronic Piping
- 23 21 23 - Hydronic Pumps
- 23 22 13 - Steam and Condensate Heating Piping
- 23 22 23 - Steam Condensate Pumps
- 23 23 00 - Refrigerant Piping
- 23 25 00 - HVAC Water Treatment
- 23 30 00 - HVAC AIR DISTRIBUTION
- 23 31 00 - HVAC Ducts and Casings
- 23 31 13 - Metal Ducts
- 23 31 16 - Nonmetal Ducts
- 23 33 46 - Flexible Ducts
- 23 51 00 - Breechings, Chimneys, and Stacks
- 23 51 13 - Draft Control Devices
- 23 51 16 - Fabricated Breechings and Accessories
- 23 51 19 - Fabricated Stacks
- 23 51 23 - Gas Vents
- 23 51 33 - Insulated Sectional Chimneys
- 40 10 00 - GAS AND VAPOR PROCESS PIPING
- 40 12 00 - Compressed Air Process Piping
- 40 13 19 - Helium Process Piping
- 40 13 29 - Nitrogen Process Piping
- 40 16 36 - Nitrous-Oxide Gas Process Piping
- 40 18 00 - Vacuum Systems Process Piping