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Peristaltic Pumps

Peristaltic Pumps

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A peristaltic pump is a type of positive displacement pump used for pumping a variety of fluids. The fluid is contained within a flexible tube fitted inside a circular pump casing.

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What are peristaltic pumps

Peristaltic pumps, otherwise known as hose pumps or tube pumps depending on their size are self-priming positive displacement pumps that can run dry, offer a very sensitive pumping action and can handle abrasive solids. The hose is the only component that comes into contact with the medium making material selection less complicated. Peristaltic pumps can be used to convey and dose liquids, including solids, gently and reliably.

  • Seal-less design: Peristaltic pumps have no seals, thus avoiding issues such as leaks of corrosive chemicals.
  • Low maintenance costs: Generally, the only part that will need replacing is the hoses or tubes.
  • Self-priming: Peristaltic pumps have the ability to run dry without the need for costly repairs. The recovery of the hose or tube creates a powerful self-priming action and allows the pumps to move liquids containing entrapped air or that can off gas.
  • High suction lift: The powerful suction provided by the recovery of a re-enforced hose gives hose pumps suction lift capabilities up to 9.5m of water.
  • Abrasion resistant: Hose life is not related to a product’s abrasive qualities. The hose only fails due to fatigue or chemical action.
  • Reversible: Peristaltic pumps are reversible and can be used to empty lines or clear blockages.


  • AxFlow is the preeminent supplier of positive displacement pumps in the UK and has over 60 years’ experience when it comes to peristaltic pumps.
  • AxFlow offers national support from its 5 technical service centres spread across the UK.
  • AxFlow offers 6 different ranges range of peristaltic pump including hose pumps for flows up to 72 m3/hr, smaller tube pumps and dosing pump models.
  • AxFlow stocks replacement hoses and tubes both in the UK and in its European Distribution Centre.
Series  Tube/Hose Roller/Shoe Application Max Flow Rate Max Pressure 
Realax APY  Tube Roller Dosing 1760ml/min 2 bar
Realax IP  Hose Roller Transfer 35 m3/hr 8 bar
Realax ISI  Hose Roller/shoe Transfer 1.5 m3/hr 8 bar
Realax RP Hose Roller Transfer 50 m3/hr 15 bar
Realax RP Duplex Hose Roller Transfer  72 m3/hr 15 bar
Blue-White Flex-Flo Tube Roller Dosing  0.004-600 l/hr 6.9 bar
Blue-White Flex-Pro Tube Roller Dosing 0.002-600 l/hr

8.6 bar

Where are peristaltic pumps used?

  • A Peristaltic pump is the first choice for metering and pumping liquids in many different industries.
  • Some hose pumps can meter abrasive liquid mixtures such as milk of lime, ferric chloride and other flocculants in water treatment plants.
  • High-pressure hose pumps are used to feed filter presses in sewage treatment plants in order to dewater the sewage sludge.
  • Peristaltic pumps with hygiene certification meter colorants, flavors, dairy products and shear-sensitive media in food production

Industries & Applications:

Peristaltic pumps are used in a range of industries due to their unique pumping mechanism and advantageous characteristics.

  • Pharmaceuticals: Peristaltic pumps are typically used in pharmaceutical manufacturing, due to the pumps ability to allow for the precise metering and transfer of fluids in processes such as drug formulation, filling vials, and handling sensitive biopharmaceuticals.
  • Food and Beverage: Peristaltic pumps are used in the food and beverage industry for the transfer of various liquids, including beverages, sauces, dairy products, and flavorings. Their sanitary design is suitable for applications where it is essential contamination must be minimized.

  • Water and Wastewater Treatment: Peristaltic pumps are used in water and wastewater treatment processes for dosing chemicals, such as disinfectants and pH-adjusting agents, due to their accurate metering capabilities, this benefit processes that include fluids such as lime cream, ferric chloride, sodium bisulphate, fluoride, polymers, aqueous ammonia, potassium permanganate, caustic soda, activated carbon, reagent feed, coagulant, flocculants, dispersion, alum, sludge and foams.

  • Medical and Laboratory Equipment: Peristaltic pumps find applications in medical devices and laboratory equipment for tasks such as blood sampling, fluid transfer in analytical instruments, and precision dispensing in diagnostic applications.

  • Chemical & Petrochemical: In the chemical industry, peristaltic pumps are employed for the transfer and dosing of various chemicals. The pump's design allows for the handling of corrosive or aggressive fluids without contamination.

  • Mining and Minerals: In mining, peristaltic pumps are used for transferring slurries, handling abrasive materials, and dosing chemicals in mineral processing operations.

  • Agriculture: Peristaltic pumps find applications in agriculture for precise dosing of fertilizers, pesticides, and other agricultural chemicals.


The correct sizing of peristaltic pumps:

In addition to the size, the right selection of components determines efficiency, safety and service life. An even, constant flow rate is achieved by pulsation dampers. This protects the pipelines and all upstream and downstream components of the system. The restoring forces of the hose are supported with a vacuum device, so that the suction vacuum is created more quickly.

The important issues that need consideration when selecting peristaltic pumps are: 

  • Flow and pressure requirements.
  • The liquid both in terms of its compatibility with tube and hose options and whether the use of a peristaltic pump is suitable.
  • Liquid temperature as this would affect the tube and hose material choice.
  • How many hours per day will the pump be required to run.

In general, it's better to oversize a peristaltic pump as this will allow you to run it more slowly thereby increasing tube life.

peristaltic pump Maintenance

Short-term maintenance:

  • Check the pump pipeline for excessive wear. Turn the pump wheel by hand to check the overall flexibility.
  • Although hose pumps can run dry, If the bearing has dry wear add bearing lubricating oil to the bearing body. The oil level should be at the center line of the oil standard. The lubricating oil should be replaced or replenished in time.
  • Assess whether the tightening bolts on the pump head of the peristaltic pump are tightened

Long-term Maintenance:

  • If the peristaltic pump is out of service for a long time, it is highly recommended to disassemble the pump, wipe off the water, apply grease to the rotating parts and joints, and store them properly.
  • During the winter season, it is recommended to drain plug at the lower part of the pump body should be unscrewed to drain the medium. Prevent freezing and cracking.

How to change the tube or hose in an Industrial Peristaltic Pump?

Changing the hose is one of the few maintenance tasks that occurs with hose pumps after a while. Basically, it is important that the replacement hose not only fits the pump, but also the respective application. For the best possible efficiency and durability of the hoses, the compression pressure on the hose is finely adjusted using shim plates on the rotor.
Detailed instructions on how to change the hose can be found in the operating instructions supplied with the pump and in our videos for changing the hose for roller hose pumps and changing the hose for sliding shoe hose pumps.

Replacement parts and service for Peristaltic pumps:

Replacement hoses for peristaltic pumps are available in many materials for different pumped media and in different sizes. A large selection of hoses, components and entire pumps are available directly from our European central warehouse with short delivery times. Our service technicians are happy to adapt the connections and base dimensions to your system and are also available for maintenance and repair work afterwards.

Perstaltic pump hose and tube materials

AxFlow supply peristaltic pump hoses in a range of different materials, such as:

  • NBR
  • NR
  • EPDM
  • CSM
  • NBR (FOOD)

Our hoses are direct replacements for Bredel pump hoses, providing a durable and cost effective solution for a range of operating conditions. Contact one of our specialist team members for guidance selecting the required hose materials for your pumping application.

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