Diaphragm Pumps Ltd

Marlow Air Operated Double Diaphragm (AODD) Pumps are becoming the most common pumps for use when Only Air is available or when pumping solid laden liquids or slurries. Marlow Diaphragm Pumps have no seals as the diaphragm acts as the barrier between the Liquid side and the drive side of the pump. When the liquid pressure reaches the air pressure, the Marlow pump reaches a point of balance and stalls without the need for bypasses or overload protection.Marlow Diaphragm Pumps pump can run dry indefinately and have the ability to self prime to 7 metres or more in some cases. They can handle viscosities up to 20000 Centipoise as standard and some Marlow models can handle cPs into the 100's of 1000's. Marlow Pumps are some of the most reliable AOD's in the marketplace, Self Priming, Dry running, Intrinsically safe, these are just a few of the features of Marlow Diaphragm Pumps. Models include pumps for pumping hygienic products, aggressive chemicals aswell as standard industrial duties. High pressure models are also available for filter press applications or for pumping into closed systems. ATEX regulated Marlow pumps are offered for Zone 1 environments. Marlow Pumps and spares are available from Diaphragm Pumps Ltd, Stoke On Trent, England. As one of the largest stockists of pumps and spares in Europe, we hope we can supply all your Marlow Pump needs.

Marlow


ITT sold the AODD pump range to The Price Pump Company in America although they are still available in the UK.

Contact Diaphragm Pumps Ltd for details.

Patented, Oil-Less, Stall-Free Design


The AOD®...a great utility pump. Wherever compressed air is available --you can have an AOD® solving a pumping problem.

Stall-free performance

  • Widest performance envelope-operates on as low as 5 PSI (.35 kg/cm2) and as slow as 1 GPH (3.5 liter/hr).
  • Bulk transfer applications- even dry powder can be handled efficiently.
  • 100% confidence in start/stop batching applications.
  • 100% confidence for "on-demand" dispensing systems.
  • Viscous liquids, paint and inks are efficiently handled.
  • Excellent on low flow chemical injection systems.

Oil-Less Operation

  • No oil misting into the environment
  • No unhealthy working conditions
  • No oil, lubricants or grease to contaminate your products
  • Air Valve Assemblies include specially modified flourocarbon resin materials which glide smoothly without lubrication.
  • All dynamic sealing is completed without the use of O-rings, resulting in less wear.

Minimal Maintenance

  • The externally serviceable main spool makes inspection quick and easy.
  • All AOD ® models allow simple access to the main spool.
  • There is never a need to take the pump out of service or to disassemble the pump to inspect the main spool.
  • Utilizing the fewest air valve components of any major diaphragm pump manufacturer.
  • The Price Pump Aod® pilot spool provides a continuous high pressure signal to the main power spool, assuring a positive shift under all operating conditions.

Technical Data

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