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ATEX Diaphragm Pump Metal

ATEX Diaphragm Pump Stainless Steel
ATEX Diaphragm Pump Stainless Steel

ATEX Diaphragm Pump Metal

ATEX icon ISO icon CE icon EN10204 icon Tapflo 5 year guarantee icon

Our ATEX Metal Diaphragm Pump, with its simple and innovative design that allows for easy maintenance and repairs, is manufactured from either Aluminium, Cast Iron or Stainless Steel AISI 316L. Our Aluminium and Cast Iron Pumps are ATEX-rated as standard and approved for use in ATEX Zone 1. While the Stainless Steel Pumps as standard are not permitted for use in hazardous environments, special conductive TX and TZ models, featuring plastic components constructed from conductive (carbon-filled) materials, are available and ideal for use in ATEX Zones 1 and 0.

Typical applications for our ATEX Metal Diaphragm Pump:

  • Chemical
  • Oil & Gas
  • Paint & Printing
  • Food & Beverage
  • Mining
  • Wastewater Treatment
  • Pharmaceutical

Max. Flow:

Max. Head:

Max. Temp:






ATEX icon ISO icon CE icon EN10204 icon Tapflo 5 year guarantee icon

The ATEX directive (also known as ATEX 100a) applies to products used in hazardous areas such as those subject to explosions like our ATEX Diaphragm Pumps. This directive also covers non-electrical products, like our Diaphragm Pumps. Since July 2003, it is now mandatory within the EU to have an ATEX certificate on products intended for use in EX-zones. There are three main categories (zones) in the ATEX directive:

  • CAT 1 (zone 0), flammable material present continuously or for long periods
  • CAT 2 (zone 1), flammable material occasionally present in normal operation
  • CAT 3 (zone 2), flammable material present in abnormal conditions for short periods

Tapflo ATEX Metal Diaphragm Pump constructed from conductive (carbon filled) plastics HDPE or PTFE, can be supplied for use within Equipment group IIG (gas), Cat 2 (Zone 1). The conductive material ensures that no electrostatic loads will accumulate within the pump. The conductive pigments in the material reduce the surface resistance to less than 105 W. The pigments, causing the black colour do not affect the chemical resistance of the thermoplastics that the pump is made from. The ATEX Metal Diaphragm Pump has diaphragms in PTFE (with conductive back) or EPDM (conductive). An earth connection is mounted on the pump for earthing of electrostatic loads. The TX variant can be supplied across all sizes of Tapflo pumps.

Tapflo’s AOD ATEX range is now available for ATEX Zone 0 as the TZ ATEX Pump. This excludes the Aluminium Metal Diaphragm Pump series.

This pump also offers pneumatic and electric valve draining; speak to a team member to discuss this option.

  • Flows up to 820 l/min
  • Pressures up to 160m
  • Self-priming
  • Solids handling up to 100mm
  • Viscosity up to 200 cSt
  • Conductive material ensures no electrostatic loads will be accumulated in the pump
  • Diaphragms in PTFE (with conductive back) or EPDM (conductive)

Data Pump Size
25 70A 70S 120A 120S 220A 220S 420A 420S 820A 820S
General Characteristics
*Max Capacity (l/min) 26 78 158 330 570 820
**Volume per Stroke (ml) 45 105 101 272 304 884 962 2440 2480 4897 3452
Max Discharge Pressure (Bar) 8 8 8 8 8 8 8 8 8 8 8
Max Air Pressure (Bar) 8 8 8 8 8 8 8 8 8 8 8
***Max Suction Lift Dry (m) 1.5 3 4 4 4 5
Max Suction Lift Wet (m) 8 8 8 8 8 8
Max Size of Solids (ø in mm) 3 4 6 10 15 13
Max Temperature with EPDM/NBR (°C) 80 80 80 80 80 80 80 80 80 80 80
Max Temperature with PTFE (°C) 110 110 110 110 110 110 110 110 110 110 110
Standard Model in Aluminium (kg) 2 5 8.65 18.1 36.8 101.5
Standard Model in Cast Iron (kg) 4.1 9.9 17.6 33.4 71.4
Standard Model in Stainless Steel (kg) 6.8 15.5 35.9 66.1 137
Drum Pump TD in Aluminium (kg) 3 7 10
Drum Pump TD in AISI 316 (kg) 7.5 16
Material of Components
Pump Housing & All Wetted Metal Details Aluminium & Cast Iron Aluminium, Cast Iron or Stainless Steel AISI 316L Aluminium or AISI 316L
Centre Block (Aluminium & Cast Iron Models) Aluminium (standard) or Cast Iron
Centre Block (Stainless Steel Models) PP (standard), Conductive HDPE or Aluminium
Diaphragms NBR, FKM, PTFE, PTFE 1705B or EPDM
Valve Balls NBR, PTFE, AISI 316L****, EPDM, Polyurethane or Ceramic****
Air Valve Brass/NBR (standard), or AISI 316L/FKM or PET/NBR (standard on TX820), PET/FKM
Gaskets Klingerseal/NBR (standard), Klingerseal/EPDM, Klingerseal/FKM, FEP/FKM (Stainless Steel pumps)
Housing Screws Steel on Aluminium &Cast Iron Pumps, A4-80 on Stainless Steel pumps
Diaphragm Shaft Stainless Steel AISI 316L (TX25, T820)/304L (T70 – T420)
Drum Handle TD Models Stainless Steel AISI 316


Largest UK Stock

Same Day Quote

Fastest Delivery

Largest UK Stock

Same Day Quote

Fastest Delivery

Looking for more information about the services offered by Tapflo UK?

Our friendly team at Tapflo UK would be more than happy to assist you further with any pump solutions, delivery information or questions you have. If you need additional support on-site, you can speak to a member of the team today to organise a site visit.

Give us a call now:

02380 252 325

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