How does a peristaltic pump operate?

Peristaltic pumps work using the process of peristalsis to pump products through a hose, in the same way that blood, food and oxygen are pumped around the body.

1. The hose sits around a rotor which, when turning, compresses a segment of the hose almost flat.
2. This compression is released as the rotor moves around the hose with the hose reinforcements causing it to spring back to its round shape, thus creating a partial vacuum refilling the hose.
3. This compression creates a seal and, as the rotor turns, any product on the discharge side of the rotor is propelled forward and displaced from the pump.
4. Combining this suction and discharge action results in a self-priming positive displacement pump.

Why choose a peristaltic pump?

Seal-less design

The main feature of the peristaltic pump is the tube/hose: because this is the only part of the pump to come in contact with the product it means the pump avoids corrosion and is leak-free.

Dry running

Many pump users face difficulties when the pump runs dry, peristaltic pumps are able to do this without any lubrication from outside.

Self priming

The pumps are capable of self-priming and can handle products that are likely to “air” or “gas”.

Gentle pumping action

In addition, because of the tube/hose and the pumps’ gentle action, the product being pumped is not damaged in the process thus making peristaltic pumps ideal for shear sensitive products.

High suction lift.

The pumps also have high suction capabilities and can provide high discharge pressures meaning they are suitable for use where the product being pumped needs to be moved away from the area of the pump.

Reversible

Due to the action of the pump it can be used to empty lines or clear blockages by reversible rotation.

Non slip pumping

The pumps have no internal backflow giving accurate dosing without slip

Accurate dosing

The pumps are accurate in dosing, with repeatability of circa ±0.5% and metering capabilities of circa ±2%.

Enhanced Hose Life - Abrasion resistant

Tube/Hose life is not related to a product’s abrasive qualities. The tube/hose only fails due to fatigue or chemical action.

Low Life Cycle Costs

When the tube/hose does need replacing the cost is minimal compared to other pumps’ maintenance costs, in addition the time needed to replace the tube/hose is much less then that needed to repair other pump types.