Pumps by working principles

    Peristaltic and sinusoidal pumps use the simplest possible pumping principles

    Peristaltic pumps

    Peristaltic pumps have no valves, seals or glands, and the fluid contacts only the bore of the hose or tube. Simple to install, easy to use and quick to maintain, they are the world's fastest growing pump type.

    • There is no contamination of the pump or the fluid
    • Ideal for slurries, viscous, shear-sensitive and aggressive fluids
    • No backflow, no siphoning
    • Wide range of tubes includes industrial, food-grade and medical
    Explore how peristaltic pumps work

    Sinusoidal pumps

    正弦泵使用单个正弦形转子，在旋转时产生四个均匀尺寸的腔室。腔室打开和靠近泵的液体，导致平滑流动，几乎没有脉动。

    • 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
    探索正弦泵的工作

    反对比赛

    渐进腔泵cannot run dry, for more than a few seconds. They can self prime but if the fluid takes time to get to the pump then the rotor/stator must either be manually lubricated or the pump needs charging with duty fluid.

    Lobe pumps are not good for metering duties becausefluid slips between the lobes and the case. Watson-Marlow peristaltic pumps have a true positive displacement action – fluid is pushed in front of a tube pinched closed.

    Piston pumpsrely on ball valves, which must be protected with strainers and yet more valves: back-pressure valves, for example. Foot valves are needed to maintain prime. Valves are prone to clogging and breakdown.

    空气膜片泵require a compressed air supplyto drive them. If this does not already exist it can be very安装昂贵. Even the best-maintained air supply systems are inefficient with at least 30% air leakage.

    Pumps by principle

    6. 渐进腔泵

      Understand how progressive cavity pumps work.

    7. Centrifugal pumps

      Centrifugal pumps are one of the most common machines in the industrial landscape.