Diaphragm Pumps Ltd

Boxer250 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. Boxer250 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 Boxer250 pump reaches a point of balance and stalls without the need for bypasses or overload protection.Boxer250 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 Boxer250 models can handle cPs into the 100's of 1000's. Boxer250 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 Boxer250 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 Boxer250 pumps are offered for Zone 1 environments. Boxer250 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 Boxer250 Pump needs.


The Boxer 250 diaphragm pumps feature simple and quick maintenance, easily replaceable components, non-lubricated air feed and adjustable delivery and head.
In the Conduct version, their explosion-proof characteristics are certified to the Atex 94/9/EC Machinery Directive.
Other technical advantages include: speed fine tuning while maintaining pressure high, splittable manifolds, possibility of mounting the fittings in three different positions on the intake or delivery side. Furthermore, these air diaphragm pumps can run dry without any problem and are equipped with a patented internal exchanger coaxial to the shaft.

Construction and technical data All the values shown are approximate and not binding
  • Suction/delivery ports G 1 1/2"
  • Air connection G 1/2"
  • Max. dry suction lift* 4 m
  • Max delivery 340 l/min
  • Max head 70 m
  • Max air feed pressure 7 bar
  • Pass solids max. dia. 6 mm
  • Net weight PP 20 kg
  • PVDF 24 kg
  • Construction materials PP PVDF ECTFE

* Depending on construction materials