Magnetic drive regenerative turbine pumps made in thermoplastic materials suitable to be used in a potentially explosive atmosphere classified ZONE 2 II3G

Anti-corrosion industrial pumps suitable for pumping acids and bases fluids and highly corrosive liquids

  • Materials available: PP or PVDF;
  • Materials in contact with the liquid:
    Pump housing: PPor PVDF;
    Impeller: PVDF;
    O-ring: EPDM (standard for PP pumps) / VITON (standard for PVDF pumps);
    Static shaft: Al2O3 99.7%;
    Bearing: PTFEC.
  • Max flow: 6 m3/h; max head 28 mlc.
  • Max temperature: PP: 70°C – PVDF: 90°C.
  • High torque magnetic coupling.
  • Chemical resistant PTFE/carbon sleeve bearings.
  • Static shaft in high purity ceramic.
  • Direct starting motor.

EM-T SP pumps can prime up to 5 m with water at ambient temperature. The casing is made from a PP solid machined block and the impeller in PVDF for maximum chemical resistance. The casing is machined from a solid block. The impeller in PVDF is self-balanced to eliminate thrust bearing wear and it is separate to minimize the maintenance costs. This kind of pump offers maximum resistance with standing also external corrosion. It handles up to 20% entrained gas and resists cavitation.


* The head and flow of the pump refer to the performance with water at room temperature. Should liquids at high temperatures and with high viscosity and density be pumped the performance has to be calculated accordingly. The electric motor should be selected on the basis of the viscosity and the specific weight given by the customer.

*For any information and quotation you can fill in the online form or send an email to info@gemmecotti.com. Our commercial office will select the pump suitable for your needs.


Magnetic drive pumps are designed with a special sealless configuration that is suitable for handling acids, chemicals, corrosive and dangerous liquids thanks to the high chemical resistance of their construction materials and to the absence of leakage and emissions. The design is really simple and it requires very little maintenance with consequent cost savings in terms of repairing, spare parts and machine downtime (costs during the pump life).  This type of pump is not suitable for transferring liquids with solids. Liquid must necessarily be clean and free of suspended solids (max presence of solid admitted: max 2% – max 1mm).
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On request GemmeCotti provides DIN e ANSI flanges for thermoplastic pumps (cartella + free flanges) and welded DIN o ANSI  flanges for pumps in AISI 316.

More informations about flanges


GemmeCotti baseplates are suitable for pump completed with motor with B3/B5 configuration. They allow the correct positioning of the pump.

More informations about baseplates


We recommended the use of the dry-running protection device for all the applications where the constant presence of liquid in the pump is not always  ensured.

More informations about dry-running device