Bottle filling machines; Centrifugal pumps; Electric pumps; Hydraulic pumps; Lubricating pumps; Oil-well pumping machines; Oil drain pumps; Positive displacement pumps; Pump diaphragms; Pumps as parts of machines, motors and engines; Pumps being machines for the beverage industry; Pumps for machines; Rotary pumps; Screw pumps; Shaft couplings for machines