A hose peristaltic pump utilizes the positive liquid displacement to force fluid transfer inside of a tube. The relaxation of the depressed hose creates suction to the inlet while the continuous hose depression by rollers creates push to the outlet.

The flow rate is determined by two factors: the rotation speed and the unit displacement volume. The rotational speed can be adjusted by the pump drive, which has a minimum and a maximum speed. The unit displacement volume depends on the hose ID, the number of rollers, and the diameter of the hose track. Additionally, the hose flexibility, the roller diameter, and the liquid viscosity also influence the unit displacement volume.

To select a peristaltic pump system, one needs to choose three parts: Pump Drive, Pump Head, and Pump Tubing.

Step 1. Choose Pump Drive

  •         Standard liquid transfer or liquid dispensing
  •          Environmental condition of application
  •          Flow rate requirements
  •          Rotation power of the pump drive
  •          Number of channels

Step 2. Choose Pump Head

  •          Compatibility with the pump drive
  •          Flow rate needed
  •          Easiness of installation and tube replacement
  •          Durability of application

Step 3. Choose Pump Tubing

  •          Compatibility with the pump head (ID and wall thickness)
  •          Flow rate requirements
  •          Chemical compatibility (corrosive)
  •          Durability of application
  •       Properties of liquid (viscosity, temperature, particles)