Centrifugal pumps; fluid flow control devices (pumps); fluid pumping installations; fluid pumps; high pressure pumps; machine pumps; marine pumps; motor pumps; motorised pumps; pressure pumps; pump casings; pump shafts; pumping units (machines); pumps (machines); pumps (other than petrol vending pumps, surgical pumps or air pumps for vehicle tyres); pumps (parts of machines, engines or motors); pumps for concrete; pumps for liquids (machines, other than self regulating fuel in filling stations); pumps for machines (parts of); pumps for the extraction of liquids (machines); rotary pumps; self-priming centrifugal pumps