Diaphragm Pumps Ltd

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

Tapflo ® PE & PTFE series

  • TR9, 9 l/min, 1/4" connection
  • TR20, 20 l/min, 3/8" connection
  • T50, 50 l/min, 1/2" connection
  • T100, 100 l/min, 1" connection
  • T200, 200 l/min, 1 1/2" connection
  • T400, 400 l/min, 2" connection

PE & PTFE Series

Tapflo ® pumps made from polyethylene (PE) or virgin PTFE are suitable for handling almost any kind of liquid whether it is viscous, chemically aggressive or solid laden.

Polyethylene pumps

Polyethylene (PE HD) has a superior wear resistance which is 6-7 times better than polypropylene (PP). This fact makes the pump suitable for handling abrasive slurries etc. PE is resistant to most kind of aggressive chemicals such as concentrated acids and alkalis. Maximum liquid temperature is 70°C.

PTFE pumps

PTFE (virgin polytetrafluorethylene) is a thermoplastic polymer with superior chemical resistance. The PTFE pump will handle even the most aggressive acids, for instance concentrated nitric acid. Maximum liquid temperature is up to 100°C.

ATEX approved -Pumps - PE & PTFE

Tapflo ® pumps made from conductive (carbon filled) plastics PE or PTFE are made for use in explosion hazardous environments. They can be used in Equipment group IIG (gas), CAT 2 (zone 1). The conductive material ensures that no electrostatic loads will be accumulated in the pump. The conductive pigments in the material reduces the surface resistance to less than 105W. The pigments, causing the black colour, does not affect the chemical resistance of the thermoplastics. Transfer of alcohol and solvents are examples of applications for the Tapflo ® TX pumps.

The TX pumps have diaphragms in PTFE (with conductive back) or EPDM (conductive). An earth connection is mounted on the pump, for earthing of electrostatic loads.

All PE & PTFE series pumps are available as TX pumps.