Includes
Truck Mounted and Trailer Mounted Compressors.

Excludes
Refrigeration Compressors (FSC 4130).

Possible NAICS Codes
333912 – Air and Gas Compressor Manufacturing
333310 – Commercial and Service Industry Machinery Manufacturing
332722 – Bolt, Nut, Screw, Rivet, and Washer Manufacturing
333618 – Other Engine Equipment Manufacturing
333914 – Measuring, Dispensing, and Other Pumping Equipment Manufacturing
333120 – Construction Machinery Manufacturing
333998 – All Other Miscellaneous General Purpose Machinery Manufacturing
336413 – Other Aircraft Parts and Auxiliary Equipment Manufacturing
332999 – All Other Miscellaneous Fabricated Metal Product Manufacturing
333996 – Fluid Power Pump and Motor Manufacturing

Excludes
Laboratory Jet Pumps (FSG 65 and 66).

Possible NAICS Codes
333996 – Fluid Power Pump and Motor Manufacturing
333914 – Measuring, Dispensing, and Other Pumping Equipment Manufacturing
336413 – Other Aircraft Parts and Auxiliary Equipment Manufacturing
333618 – Other Engine Equipment Manufacturing
332722 – Bolt, Nut, Screw, Rivet, and Washer Manufacturing
326299 – All Other Rubber Product Manufacturing
333310 – Commercial and Service Industry Machinery Manufacturing
333991 – Power-Driven Handtool Manufacturing
333120 – Construction Machinery Manufacturing
333998 – All Other Miscellaneous General Purpose Machinery Manufacturing

Includes
Automatic Nonpowered Valves; Gate, Globe, Angle, Check, and Relief Valves; Cocks.

Excludes
Fire Hydrants (FSC 4210) Sprinkler Heads (FSC 4210); Valves specifically designed for use with fire fighting equipment (FSC 4210); plumbing equipment and the like (FSC 4540)

Possible NAICS Codes
332911 – Industrial Valve Manufacturing
332919 – Other Metal Valve and Pipe Fitting Manufacturing
336310 – Motor Vehicle Gasoline Engine and Engine Parts Manufacturing
332912 – Fluid Power Valve and Hose Fitting Manufacturing
336413 – Other Aircraft Parts and Auxiliary Equipment Manufacturing
333618 – Other Engine Equipment Manufacturing
336411 – Aircraft Manufacturing
332722 – Bolt, Nut, Screw, Rivet, and Washer Manufacturing
333310 – Commercial and Service Industry Machinery Manufacturing
332510 – Hardware Manufacturing

Includes
Hand Grease Guns; Centralized Lubrication Systems; Hydrostatic Lubricators; Oil and Gasoline Dispensing Pumps; Fuel Oil Dispensing Pumps; Hand Oilers; Grease Dispensers; Pressure Gun Attachments; Sight Feed Lubricators.

Excludes
Alemite and Lubrication Fittings (FSC 4730).

Possible NAICS Codes
333914 – Measuring, Dispensing, and Other Pumping Equipment Manufacturing
333618 – Other Engine Equipment Manufacturing
331318 – Other Aluminum Rolling, Drawing, and Extruding
339993 – Fastener, Button, Needle, and Pin Manufacturing
333912 – Air and Gas Compressor Manufacturing
333310 – Commercial and Service Industry Machinery Manufacturing
336413 – Other Aircraft Parts and Auxiliary Equipment Manufacturing
332919 – Other Metal Valve and Pipe Fitting Manufacturing
333998 – All Other Miscellaneous General Purpose Machinery Manufacturing

Description
Maintenance, Repair and Rebuilding of Equipment: Pumps and Compressors

Possible NAICS Codes
811310 – Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance
238220 – Plumbing, Heating, and Air-Conditioning Contractors
333912 – Air and Gas Compressor Manufacturing
561210 – Facilities Support Services
221310 – Water Supply and Irrigation Systems
333914 – Measuring, Dispensing, and Other Pumping Equipment Manufacturing
237110 – Water and Sewer Line and Related Structures Construction
811210 – Electronic and Precision Equipment Repair and Maintenance
541330 – Engineering Services
336611 – Ship Building and Repairing

Includes
Store Type Units; Window and Room Type Units; Marine, and Vehicular Air Conditioning Units; Air Conditioning Plants and Systems.

Excludes
Air Conditioning Components (FSC 4130, or as otherwise specifically prescribed by the indexes and structure of the FSC).

Notes
This class includes only complete air conditioning equipment, systems, and plants. Also included are specially designed nonoperating accessories such as a window panel used with a window type air conditioning unit to facilitate mounting. Excluded from this class are operating components, assemblies, parts, attachments, or accessories for use in or on air conditioning equipment, which are to be classified in FSC 4130, or as otherwise specifically prescribed by the indexes and structure of the FSC.

Possible NAICS Codes
333415 – Air-Conditioning and Warm Air Heating Equipment and Commercial and Industrial Refrigeration Equipment Manufacturing
238220 – Plumbing, Heating, and Air-Conditioning Contractors
335220 – Major Household Appliance Manufacturing
333413 – Industrial and Commercial Fan and Blower and Air Purification Equipment Manufacturing
333912 – Air and Gas Compressor Manufacturing
334290 – Other Communications Equipment Manufacturing
336413 – Other Aircraft Parts and Auxiliary Equipment Manufacturing
332510 – Hardware Manufacturing
423730 – Warm Air Heating and Air-Conditioning Equipment and Supplies Merchant Wholesalers
221330 – Steam and Air-Conditioning Supply

Includes
Anesthesia Apparatus; Blood Transfusion Apparatus; Oxygen Therapy Apparatus; Respirators; Orthopedic Supplies; Arch Supports; Clinical Thermometers; Sutures; Hearing Aids; Veterinary Equipment, Endoscopes, Fiber Optic.

Excludes
Ophthalmic Instruments, Equipment, and Supplies; Non-Medical Endoscopes.

Possible NAICS Codes
423450 – Medical, Dental, and Hospital Equipment and Supplies Merchant Wholesalers
339113 – Surgical Appliance and Supplies Manufacturing
325411 – Medicinal and Botanical Manufacturing
339112 – Surgical and Medical Instrument Manufacturing

Includes
Paint Spraying Equipment.

Excludes
Hand Tools (FSG 51).

Possible NAICS Codes
333310 – Commercial and Service Industry Machinery Manufacturing
334419 – Other Electronic Component Manufacturing
334514 – Totalizing Fluid Meter and Counting Device Manufacturing
332510 – Hardware Manufacturing
339999 – All Other Miscellaneous Manufacturing
332994 – Small Arms, Ordnance, and Ordnance Accessories Manufacturing
333618 – Other Engine Equipment Manufacturing
333998 – All Other Miscellaneous General Purpose Machinery Manufacturing
811310 – Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance
811210 – Electronic and Precision Equipment Repair and Maintenance

Excludes
Laboratory Centrifuges (FSG 65 and 66); Water Purification Filters (FSC 4610).

Possible NAICS Codes
333998 – All Other Miscellaneous General Purpose Machinery Manufacturing
333618 – Other Engine Equipment Manufacturing
333310 – Commercial and Service Industry Machinery Manufacturing
332994 – Small Arms, Ordnance, and Ordnance Accessories Manufacturing
333120 – Construction Machinery Manufacturing
333914 – Measuring, Dispensing, and Other Pumping Equipment Manufacturing
339950 – Sign Manufacturing
336390 – Other Motor Vehicle Parts Manufacturing
336411 – Aircraft Manufacturing
336413 – Other Aircraft Parts and Auxiliary Equipment Manufacturing

Includes
Laboratory Glassware; Laboratory Funnels; Laboratory Furnaces; Glass Beads; Laboratory White Sand; Litmus Paper; Paper Filters; Insect Transfixion Pins; Laboratory Glass Wool; Laboratory Furniture, except Dental Laboratory.

Excludes
Instruments covered by other classes in group 66; Dental Laboratory Equipment; Laboratory Scales and Balances; In Vitro Diagnostic Substances and Reagents.

Possible NAICS Codes
423450 – Medical, Dental, and Hospital Equipment and Supplies Merchant Wholesalers
339999 – All Other Miscellaneous Manufacturing
334516 – Analytical Laboratory Instrument Manufacturing

Includes
Air Duct, Metallic, Nonmetallic, and Textile Fiber Hoses and their assemblies; Flexible Tubing and their assemblies.

Excludes
Conduit and their assemblies (FSC 5975); Laboratory Tubes (FSC 6640); Medical and Surgical Tubes (FSC 6515); Rigid Tubing and their assemblies (FSC 4710).

Possible NAICS Codes
332999 – All Other Miscellaneous Fabricated Metal Product Manufacturing
326220 – Rubber and Plastics Hoses and Belting Manufacturing
333618 – Other Engine Equipment Manufacturing
333120 – Construction Machinery Manufacturing
332722 – Bolt, Nut, Screw, Rivet, and Washer Manufacturing
336411 – Aircraft Manufacturing
332510 – Hardware Manufacturing
332994 – Small Arms, Ordnance, and Ordnance Accessories Manufacturing
336413 – Other Aircraft Parts and Auxiliary Equipment Manufacturing
333310 – Commercial and Service Industry Machinery Manufacturing

Includes
Liquefied gaseous storage tanks, mounted on a common base with, or integral to, gas generating equipment included in this class. Also includes those liquefied gaseous storage tanks, either trailer mounted or skid mounted, used to store liquefied gaseous products until needed. Excluded from this class are those storage tanks designed to be used as an integral part of guided missile propellant servicing trailers, rocket power plants or test stations, and aircraft oxygen converters which are classified as specified by the indexes and structure of the FSC.

Excludes
Meteorological Equipment.

Notes
Included in this class are gaseous dispensing systems, both mobile and installed.

Possible NAICS Codes
333998 – All Other Miscellaneous General Purpose Machinery Manufacturing
333310 – Commercial and Service Industry Machinery Manufacturing
333914 – Measuring, Dispensing, and Other Pumping Equipment Manufacturing
325120 – Industrial Gas Manufacturing
336413 – Other Aircraft Parts and Auxiliary Equipment Manufacturing
333912 – Air and Gas Compressor Manufacturing
333996 – Fluid Power Pump and Motor Manufacturing
333613 – Mechanical Power Transmission Equipment Manufacturing
332420 – Metal Tank (Heavy Gauge) Manufacturing
221210 – Natural Gas Distribution

Includes
Sails; Chain Ladders; Rope Ladders; Marine Furniture.

Possible NAICS Codes
336611 – Ship Building and Repairing
441222 – Boat Dealers
332322 – Sheet Metal Work Manufacturing
333618 – Other Engine Equipment Manufacturing
114119 – Other Marine Fishing
332321 – Metal Window and Door Manufacturing
332999 – All Other Miscellaneous Fabricated Metal Product Manufacturing
332510 – Hardware Manufacturing
334511 – Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing
336612 – Boat Building

Includes
Fuel Gases.

Excludes
Military Chemical Gases; Medical Gases (for medical gases use code 6835); Empty Gas Cylinders and their caps, valves, and valve spare parts.

Possible NAICS Codes
336413 – Other Aircraft Parts and Auxiliary Equipment Manufacturing
325120 – Industrial Gas Manufacturing
211130 – Natural Gas Extraction
324110 – Petroleum Refineries
221210 – Natural Gas Distribution

Possible NAICS Codes
334310 – Audio and Video Equipment Manufacturing
541519 – Other Computer Related Services
334210 – Telephone Apparatus Manufacturing
334419 – Other Electronic Component Manufacturing
334220 – Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing
444180 – Other Building Material Dealers
334111 – Electronic Computer Manufacturing
334290 – Other Communications Equipment Manufacturing
313230 – Nonwoven Fabric Mills
336390 – Other Motor Vehicle Parts Manufacturing