DSI INC

Water Supply and Irrigation Systems

Establishments in this category are primarly engaged in operating water treatment plants and/or operating water supply systems. The water supply system may include pumping stations, aqueducts, and/or distribution mains. The water may be used for drinking, irrigation, or other uses.

Sewage Treatment Facilities

Establishments in this category are primarly engaged in operating sewer systems or sewage treatment facilities that collect, treat, and dispose of waste.

Steam and Air-Conditioning Supply

Establishments in this category are primarly engaged in providing steam, heated air, or cooled air. The steam distribution may be through mains.

Fabricated Structural Metal Manufacturing

This includes establishments primarily engaged in fabricating structural metal products, such as assemblies of concrete reinforcing bars and fabricated bar joists.

Sheet Metal Work Manufacturing

This includes establishments primarily engaged in manufacturing sheet metal work (except stampings).

Machine Shops

This category includes establishments known as machine shops primarily engaged in machining metal and plastic parts and parts of other composite materials on a job or order basis. Generally machine shop jobs are low volume using machine tools, such as lathes (including computer numerically controlled); automatic screw machines; and machines for boring, grinding, milling, and additive manufacturing.

Industrial Valve Manufacturing

This includes establishments primarily engaged in manufacturing industrial valves and valves for water works and municipal water systems.

Illustrative Examples:

Complete fire hydrants manufacturing
Industrial-type ball valves manufacturing
Industrial-type butterfly valves manufacturing
Industrial-type check valves manufacturing
Industrial-type gate valves manufacturing
Industrial-type globe valves manufacturing
Industrial-type plug valves manufacturing
Industrial-type solenoid valves (except fluid power) manufacturing
Industrial-type steam traps manufacturing
Valves for nuclear applications manufacturing

Other Metal Valve and Pipe Fitting Manufacturing

This includes establishments primarily engaged in manufacturing metal valves (except industrial valves, fluid power valves, fluid power hose fittings, and plumbing fixture fittings and trim).

Illustrative Examples:

Aerosol valves manufacturing
Firefighting nozzles manufacturing
Lawn hose nozzles manufacturing
Lawn sprinklers manufacturing
Water traps manufacturing
Metal hose couplings (except fluid power) manufacturing
Metal pipe flanges and flange unions manufacturing
Plumbing and heating inline valves (e.g., check, cutoff, stop) manufacturing

Fabricated Pipe and Pipe Fitting Manufacturing

This includes establishments primarily engaged in fabricating, such as cutting, threading, and bending, metal pipes and pipe fittings made from purchased metal pipe.

Industrial and Commercial Fan and Blower and Air Purification Equipment Manufacturing

This includes establishments primarily engaged in (1) manufacturing stationary air purification equipment, such as industrial dust and fume collection equipment, electrostatic precipitation equipment, warm air furnace filters, air washers, and other dust collection equipment, and/or (2) manufacturing attic fans and industrial and commercial fans and blowers, such as commercial exhaust fans and commercial ventilating fans.

Measuring, Dispensing, and Other Pumping Equipment Manufacturing

This includes establishments primarily engaged in (1) manufacturing measuring and dispensing pumps, such as gasoline pumps and lubricating oil measuring and dispensing pumps and/or (2) manufacturing general purpose pumps and pumping equipment (except fluid power pumps and motors), such as reciprocating pumps, turbine pumps, centrifugal pumps, rotary pumps, diaphragm pumps, domestic water system pumps, oil well and oil field pumps, and sump pumps.

Conveyor and Conveying Equipment Manufacturing

This includes establishments primarily engaged in manufacturing conveyors and conveying equipment, such as gravity conveyors, trolley conveyors, tow conveyors, pneumatic tube conveyors, carousel conveyors, farm conveyors, and belt conveyors.

Other Services to Buildings and Dwellings

Establishments in this category are primarly engaged in providing services to buildings and dwellings (except exterminating and pest control; janitorial; landscaping care and maintenance; and carpet and upholstery cleaning).

Illustrative Examples:

Building exterior cleaning services (except sandblasting, window cleaning)
Swimming pool cleaning and maintenance services
Chimney cleaning services
Ventilation duct cleaning services
Drain or gutter cleaning services

Septic Tank and Related Services

This includes establishments primarily engaged in (1) pumping (i.e., cleaning) septic tanks and cesspools and/or (2) renting and/or servicing portable toilets.

All Other Miscellaneous Waste Management Services

This includes establishments primarily engaged in providing waste management services (except waste collection, waste treatment and disposal, remediation, operation of materials recovery facilities, septic tank pumping and related services, and waste management consulting services).

Illustrative Examples:

Beach cleaning and maintenance services
Sewer or storm basin cleanout services
Catch basin cleaning services
Tank cleaning and disposal services, commercial or industrial
Sewer cleaning and rodding services