Roller pumps (also called peristaltic pumps) are a type of positive displacement pump that moves fluids by compressing and releasing a flexible tube with rotating rollers. They are widely used in medical, industrial, and laboratory applications due to their gentle, contamination-free pumping action.
Flexible Tube/Hose – The pump uses a silicone, rubber, or thermoplastic tube that sits inside a circular pump housing.
Rotating Rollers/Shoes – A rotor with 2 or more rollers compresses the tube against the pump casing as it turns.
Peristaltic Action –
Compression Phase: As a roller presses the tube, it seals off a section of fluid and pushes it forward.
Recovery Phase: The tube rebounds behind the roller, creating suction to draw more fluid in.
Continuous Flow – The process repeats with each roller, ensuring pulsation-free, steady flow.
✅ No Contamination – Fluid only touches the tube (ideal for sterile applications).
✅ Self-Priming – Can run dry without damage.
✅ Low Shear – Gentle on sensitive fluids (e.g., blood, cell cultures).
✅ Reversible Flow – Direction changes by reversing rotation.
✅ Easy Maintenance – Only the tube needs replacement.
Medical & Lab: IV pumps, dialysis machines, bioreactors.
Food & Beverage: Handling syrups, dairy, and viscous liquids.
Wastewater Treatment: Dosing chemicals safely.
Industrial: Transferring abrasive slurries, adhesives.
⚠ Tube Wear – Frequent replacement needed for abrasive fluids.
⚠ Pulsation – Some models produce slight pulsing flow.
⚠ Limited Pressure – Not ideal for high-pressure systems.
Would you like details on specific roller pump types or maintenance tips?