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Mf Section C Manufacturing
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Class 2811 - Manufacture of engines and turbines, except aircraft, vehicle and cycle engines

PSIC Class 2811 covers Manufacture of engines and turbines, except aircraft, vehicle and cycle engines. Current child subclasses include Manufacture of Internal Combustion Engines (gas and Diesel), Manufacture of...

Level Class
Hierarchy depth 4/5
Children 4
Last verified 2026-05-12
About this level

Practical summary

Class 2811 sits in the PSIC 2019 hierarchy under C Manufacturing > 28 Manufacture of Machinery and Equipment, n.e.c. > 281 Manufacture of general purpose machinery. This class usually fans out into more specific subclasses such as Manufacture of Internal Combustion Engines (gas and Diesel), Manufacture of Engines and Turbines for Marine Propulsion, and Manufacture of Parts of Engines and Turbines, except for Aircraft, Vehicle and Cycle Engines. It is the level people use when they already know the activity family but still need the exact five-digit match.

Administrative context

Where this code is used

This class is used when a business can already narrow the activity family and only needs to compare the final subclasses such as Manufacture of Internal Combustion Engines (gas and Diesel), Manufacture of Engines and Turbines for Marine Propulsion, and Manufacture of Parts of Engines and Turbines, except for Aircraft, Vehicle and Cycle Engines. It is the level most often checked before a five-digit decision is finalized.

Selection note

How to choose it

Use this class to choose between its final subclasses such as Manufacture of Internal Combustion Engines (gas and Diesel), Manufacture of Engines and Turbines for Marine Propulsion, and Manufacture of Parts of Engines and Turbines, except for Aircraft, Vehicle and Cycle Engines. If two options look close, compare the exact activity, the outputs and the way the business actually earns revenue.

Official note

Source-backed description

This class includes: Manufacture of internal combustion piston engines, except motor vehicle, aircraft and cycle propulsion engines: marine engines, railway engines Manufacture of pistons, piston rings, carburetors and such for all internal combustion engines, diesel engines, etc. Manufacture of inlet and exhaust valves of internal combustion engines Manufacture of turbines and parts thereof: steam turbines and other vapor turbines, hydraulic turbines, waterwheels and regulators thereof, wind turbines, gas turbines, except turbo jets or turbo propellers for aircraft propulsion Manufacture of boiler-turbine sets Manufacture of turbine-generator sets This class excludes: Manufacture of electric generators (except turbine generator sets), see 2711; Manufacture of prime mover generator sets (except turbine generator sets), see 2711; Manufacture of electrical equipment and components of internal combustion engines, see 2790; Manufacture of motor vehicle, aircraft or cycle propulsion engines, see 2910, 3030, 3091; Manufacture of turbojets and turbo propellers, see 3030. (gas and diesel) marine propulsion turbines, except for aircraft, vehicle and cycle engines except for transport, n.e.c.

FAQ

What does PSIC Class 2811 cover?

PSIC Class 2811 is the four-digit layer that sits just above the final subclasses and usually defines the activity family for Manufacture of engines and turbines, except aircraft, vehicle and cycle engines.

How do I compare Class 2811 with the sibling classes?

Read the neighboring classes and compare the exact wording of the child subclasses. Nearby options include 2812 Manufacture of fluid power equipment and 2813 Manufacture of other pumps, compressors, taps and valves.

Why does Class 2811 matter for a filing decision?

It is usually the last broad checkpoint before the five-digit subclass choice, so it is the right place to catch near-miss classifications.