How the Single-Use Pump Works

How the Single-Use Pump Works

The single-use pump technology comprises of five components – the housing with integral membrane, rotor with a plurality of cavities, spring barrel, seal and seal cap. The rotor is an interference fit in the housing, ensuring that each cavity is a discreet bolus constrained by rigid walls. Thus, as each bolus is formed, a vacuum is created causing liquid to be sucked into the bolus. Each cavity of liquid is transported around the pump until it is emptied by the action of the spring barrel actuated housing membrane. This unique arrangement only has one moving part and some flexing elements which allows for a very cost-effective pump solution. Moreover, with a direct drive to a motor there are few parts to wear or maintain.

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Pump Technology Characteristics

CharacteristicTypical performance
Wide range of flow rates
Currently 0.1µl/hr to 26ml/s (across 5 pump sizes)
Operating time dependency
Less than 1% deviation in flow rate over pack volume
Flow rate dependency
Less than 1% deviation in flow rate across range
Pressure dependency
Less than 1% deviation in dose volume across a pressure range of 0.0 – 0.5bar
Viscosity dependency
Less than 1% deviation in dose volume across a range of viscosities 1 - 10,000cP
Temperature dependency
Less than 1% deviation in dose volume over a range of temperatures 5°C – 35°C
ConstancySee trumpet curves on medical page
High vacuum pressures
  • Inlet vacuum > 9 metres H20 (0.9Bar)
  • Can pump air or liquid
  • Wide range of operating pressures
  • Outlet pressure up to 5 bar
  • Compatible with a range of high particulate count fluids
  • Food concentrates and pulp and soft particulates up to 12mm³
  • Syrups and juice concentrates up to 65% true Brix solids
  • Compatible with a wide range of chemically active fluids
  • Detergents, colourants, and flavours up to 500:1
  • Strong acids and alkalis
  • Solvents including acetone, petroleum and mineral oils
  • Low cost/single use
    Life expectancy of one fluid pack without change in performance (with a 5X safety margin)
    Low power consumptionTypically outperforms a peristaltic pump under similar operating parameters in power efficiency

    Pump Features & Benefits

    Airless dispense
    Bag or bag-in-bottle collapses as liquid is dispensed
    Eliminates oxidation of food and drinks
    Self priming
    Pump is gas-tight
    Will self-prime even if empty at start
    Fully reversible
    Can pump in either direction
    Eliminates drips and congealed fluids at point of dispense
    Pump is an instantaneous check valve
    Prevents fluid flow when not rotating
    Pack is sealed by pump under instantaneous pressure
    Flexible design integration
    Ports can be tangential, axial or paraxial
    Pump can be positioned in the disposable or in the device
    Capable of pumping two liquids at once
    Two inlet ports and two outlet ports share the same rotor
    Allows pre-mixing of two liquids
    Allows headspace replacement
    Housing made of PP and rotor of PE
    Fluid path only makes contact with polypropylene and polyethylene
    Able to pump aggressive solvents, acids and alkalis

    Pump finder tool

    Use the fields below to help you identify which Quantex pump is most suitable for you. Select the maximum target flowrate that is immediately above your requirements.


    Learn more about our pumps

    Product catalogue

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