Pump classification

1. Dynamic
1.1 Centrifugal
1.1.1 Axial flow
1.1.1.1 Single stage
1.1.1.1.1 Close impeller
1.1.1.1.2 Open impeller

1.1.1.2 Multi stage
1.1.1.2.1 Close impeller
1.1.1.2.2 Open impeller

1.1.2 Mixed flow / Radial Flow
1.1.2.1 Single suction
1.1.2.2 Double suction

1.2 Special Effect
1.2.1 Jet (eductor)
1.2.2 Gas lift
1.2.3 Hydraulic ram
1.2.4 Electromagnetic

2. Displacement
2.1 Reciprocating
2.1.1 Piston, plunger
2.1.1.1 Steam - double acting
2.1.1.2 Power
2.1.1.2.1 Single acting
2.1.1.2.2 Double acting
2.1.2 Diaphragm
2.1.2.1 Simplex
2.1.2.1 Duplex
2.2 Rotary
2.2.1 Single rotor
2.2.1.1 Vane
2.2.1.2 Piston
2.2.1.3 Flexible member
2.2.1.4 Screw
2.2.1.5 Pristaltic

2.2.2 Multiple rotor
2.2.2.1 Gear
2.2.2.2 Lobe
2.2.2.3 Circumferential Piston
2.2.2.4 Screw