You are here: Main page» Magnetic Drive Gear Pumps» Non-Metallic Gear Pumps TEF-MAG®» Non-Metallic External Gear Pump TEF-MAG® 3500

Non-Metallic External Gear Pump TEF-MAG® 3500

Horizontal, self-priming, magnetic drive chemical gear pump in block design, 
wetted pump components made of completely non-metallic materials for aggressive liquids, also compliant with ATEX 2014/34/EU or FDA.

The MARCH TEF-MAG® series pumps are magnetically coupled, external gear, rotary positive displacement pumps made of non-metallic materials designed for operation with highly corrosive chemicals. Gear pumps generate an almost pulsation-free forced flow according to the positive displacement principle with high differential pressure. The pump housings of the TEF-MAG® series are machined from robust solid material and corrosion-resistant plastics such as PP, PVDF, PEEK, PVC or PE. Even the wetted shafts are made of non-metallic engineering ceramics such as SSiC or Al203 which represents the best possible chemical resistance. The gears are made of high performance plastics which have self-lubricating properties. Thus the pumps of the TEF-MAG® series are also capable of pumping low viscosity liquids without any problems. Power is transmitted from the drive to the pump by a force-locked connection without contact by means of strong NdFeB permanent magnets. As a result the pump operates without any mechanical shaft seal ensuring safe and leak-free pumping of corrosive, toxic and explosive liquids. Pumps for hazardous areas of zones 1 and 2 can be supplied in corrosion-resistant and conductive plastics.


  • No need in expensive high alloys like Duplex, Hastelloy C or Titanium
  • Rotating positive displacement pump
  • External gear pump
  • Almost pulsation free
  • Leak-Free
  • Magnetically coupled
  • Low NPSHR-value of 0,5m only
  • Rugged
  • Corrosion restistant
  • Self-priming (wet)
  • Dry-run capable
  • Small and compact design
  • Linear performance curves while variable speed controlling
  • High discharge pressures
  • Low flow rates
  • Integrated Variable Frequency Drive (available on request)
  • Pump acc. to ATEX 2014/34/EU


Performance data

Nominal speed:1450 1/min (50 Hz)
1750 1/min (60 Hz)
Nominal flow rate:3750 l/h (990 us gph)
4650 l/h (1228 us gph)
Differential pressure:max. 10 bar


PP:max. 65°C
PVDF:max. 65°C
PEEK:max. 120°C

Available materials

Shaft:Al2O3 >99%, SSiC
Bearings:PTFEC, Carbon graphite, PPS-HPV, PEEK-HPV

System pressure

PN:max. 16 bar

Connection on suction side

Thread G1 1/4" female
Loose-type flange DN 32

Connection on discharge side

Thread G1 1/4" female
Loose-type flange DN 32


IEC three-phase asynchronous motor
3x230 / 400 V
2,2 - 4,0 kW / 1450 1/min

Product movie