How do sinusoidal pumps work?

Sinusoidal pumps work on the positive displacement principle meaning there is no contamination of the pump or fluid.

Sine pumps - how they work

Sine pumps provide a low-shear, gentle pumping action through a sinusoidal shaped rotor. The single sinusoidal rotor creates four evenly sized chambers as it rotates. Fluid is pulled through the inlet into each chamber in turn. The chamber rotates, contracts, closes then discharges the fluid packages through the outlet port. The opposite chamber opens to draw in more fluid, resulting in a smooth flow with virtually no pulsation. A gate functions as a seal between the inlet and outlet of the pump, preventing fluid escaping

  • Simple maintenance performed in place by a line operative
  • Bi-directional running enables duty fluid to be returned to source
  • Separation between the wet end and dry end ensures no contamination

Maintenance of sine pumps takes minutes and can be performed in-place by a line operative. Replace off-the-shelf wear components to restore to ‘new pump’ performance.


  1. Certa pump

    Certa pump

    Low shear, virtually no pulsation EHEDG Type EL Aseptic Class I certifed pump. Up to 50 % less power than other pumps.

    Pumps - sine pumps

  2. Certa plus pump

    Certa plus pump

    Low shear, zero pulsation and self-draining pump certified with EHEDG Type EL Class I and EHEDG Type EL Aseptic Class I.

    Pumps - sine pumps

  3. SPS pump

    SPS pump

    Low shear pumping with flow rates to 99,000 L/h (434 USGPM) and pressures up to 15 bar (217 psi).

    Pumps - sine pumps

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