How will the flow rate be effected by the different rollers inside the peristaltic pumps?

For example: what is the difference between 3-wheel peristaltic pump and 6-wheel peristaltic pump?

1. The smaller the number of wheels, the greater the flow. The flow / velocity of the 3-wheel peristaltic pump is higher than that of the 6-wheel peristaltic pump,

2. The more the number of wheels, the smaller the pulse. The pulse of 6-wheel peristaltic pump is smaller than that of 3-wheel peristaltic pump, with high precision

Summary: 

More rollers
The slower the speed
The higher the accuracy
The smaller the pulsation