22 15 00 General Service Compressed-Air Systems
22 15 19.19 General Service Packaged Rotary-Screw Air Compressors
22 15 13 General Service Compressed-Air Piping 22 15 16 General Service Compressed-Air Valves 22 15 19 General Service Packaged Air Compressors and Receivers 22 15 19.13 General Service Packaged Reciprocating Air Compressors 22 15 19.16 General Service Packaged Liquid-Ring Air Compressors 22 15 19.19 General Service Packaged Rotary-Screw Air Compressors 22 15 19.23 General Service Packaged Sliding-Vane Air Compressors