| Hydraulic Component | Circuit Component |
| A flexible rubber tank with diaphragm | |
| Quantity of water flowing by a point over time | |
| A difference in pressure between two points | |
| A slightly leaky one way check valve | |
| A reduction in width of the pipe, which requires additional pressure to pass the same amount of water | |
| A very heavy paddle wheel | |
| A valve with a diaphragm controlled by small plunger | |
| A relatively wide pipe filled with water | |