| 28131 | Air pump (manufacture) |
| 28131 | Archimedean screw pump (manufacture) |
| 28131 | Axial flow pump (manufacture) |
| 28131 | Bicycle pumps (manufacture) |
| 28131 | Centrifugal pump (manufacture) |
| 28131 | Channel impeller pump (manufacture) |
| 28131 | Circulator pump (manufacture) |
| 28131 | Concrete pumps (manufacture) |
| 28131 | Delivery pump (manufacture) |
| 28131 | Diaphragm pump (manufacture) |
| 28131 | Dosing and proportioning pump (manufacture) |
| 28131 | Ejector pump (manufacture) |
| 28131 | Electro-magnetic pumps (manufacture) |
| 28131 | Emulsion (gas lift) pumps (manufacture) |
| 28131 | Fuel injection equipment for industrial engines (manufacture) |
| 28131 | Fuel pump for industrial engine (manufacture) |
| 28131 | Fuel pump for internal combustion piston engine, for aircraft (manufacture) |
| 28131 | Gas combustion pumps (manufacture) |
| 28131 | Gear pumps (manufacture) |
| 28131 | Hand or foot operated pumps (manufacture) |
| 28131 | Helical rotor pump (manufacture) |
| 28131 | Helicoidal pumps (manufacture) |
| 28131 | Impeller pumps (manufacture) |
| 28131 | Inflator for cycle type tyres (manufacture) |
| 28131 | Liquid elevators (manufacture) |
| 28131 | Lobe pump (manufacture) |
| 28131 | Lubricating pump (not for internal combustion engine) (manufacture) |
| 28131 | Medicinal pumps (manufacture) |
| 28131 | Metering pump (manufacture) |
| 28131 | Oil-cushion pumps (manufacture) |
| 28131 | Peristaltic pumps (manufacture) |
| 28131 | Petrol station pump (manufacture) |
| 28131 | Positive displacement pump (reciprocating) (manufacture) |
| 28131 | Pump (not for hydraulic or for internal combustion engine) (manufacture) |
| 28131 | Pump parts (manufacture) |
| 28131 | Pumps and parts (non-electric) for oil, gas, petrol or water on motor vehicles (manufacture) |
| 28131 | Pumps for liquids whether or not fitted with measuring devices (manufacture) |
| 28131 | Radial flow pump (manufacture) |
| 28131 | Rotary piston lobe-type pumps (manufacture) |
| 28131 | Screw pump (manufacture) |
| 28131 | Submersible motor pump (manufacture) |
| 28131 | Vacuum pump (manufacture) |
| 28131 | Vane pump (manufacture) |
| 28131 | |