Pumps and pump-centred assemblies for transferring, circulating, dosing, pressurising or evacuating fluids, including centrifugal and positive-displacement pumps, hydraulic pumps, vacuum and priming pumps, ejectors, booster sets and wastewater lifting stations. Includes dedicated pump housings, impellers, rotors and maintenance kits. Pump principle and duty remain available for later subdivision. Complete hydraulic power units have their own family; integrated dispensing, loading and product-recovery systems follow their combined fluid-transfer function.