In the chemical pumping sector, choosing the correct technology is fundamental to guarantee safety, efficiency, and operational continuity. Series HTT regenerative magnetic drive turbine pumps by GemmeCotti are the solution for those who need to handle highly corrosive and clean liquids with maximum reliability.

How does a magnetic drive turbine pump work?

HTT pumps combine the advantages of the regenerative turbine with the innovation of the magnetic drive. Unlike traditional pumps, the transmission of motion occurs through magnetic forces, completely eliminating the use of mechanical seals.

The main advantages of the HTT series turbine pumps include:

  • Zero leaks: The absence of mechanical seals drastically reduces the risk of dangerous emissions into the environment and maintenance costs.
  • Maximum safety: Ideal for fluids that must not come into contact with the environment.
  • Cavitation resistance: Thanks to their design, these pumps can pump liquids with a gas presence of up to 20%.
  • Reversibility: One of the distinctive features of the HTT series is its complete reversibility.

Designing systems for corrosive liquids requires extreme flexibility, and HTT pumps allow the configuration to be adapted to real operational needs.

– Flow reversal: It is possible to reverse the suction and delivery ports (in & out) simply by reversing the motor’s direction of rotation.

 

Series HTT magnetic drive turbine pumps: the advantage of reversible connections

 

What are the best materials for pumping highly corrosive liquids?

HTT pumps are made of molded thermoplastic materials (PP and PVDF), chosen for their excellent chemical compatibility.

  • PP (Polypropylene): Ideal for a wide range of chemicals, it supports temperatures up to 60-70°C.
  • PVDF: Indicated for heavier-duty applications, with a thermal resistance up to 90°C.
  • Internal components: The static shaft is made of 99.7% pure alumina, while the bushings are in graphite-filled PTFE to guarantee high chemical resistance.

Performance and technical data of the HTT range:

The HTT range offers versatile performance for different industrial needs:

  • Maximum flow rate: Up to 9 m³/h.
  • Maximum head: Up to 48 mcl.
  • Maximum viscosity: Up to 45 cPs.
  • Nominal pressure: PN 6 at 20°C.

FAQ

FAQ:

  1. Can regenerative turbine pumps pump liquids with gas? Yes, the HTT series is designed to handle liquids with a gas presence of up to 20%, effectively resisting cavitation phenomena.
  2. What is the difference between a magnetic drive pump and one with a mechanical seal? The main difference lies in the sealless design of magnetic drive pumps. While a traditional pump uses a mechanical seal subject to wear and potential leaks, the magnetic pump guarantees a hermetic seal thanks to a magnetic coupling. An external magnet, driven by the motor, transmits motion to an internal magnet through a containment shroud, eliminating any possible leakage of the liquid and guaranteeing zero emissions into the environment.
  3. Can I use the HTT pump in zones with an explosion risk? Certainly. As an option, the ATEX version is available (model EM-T in PP or PVDF) suitable for zone 2 II 3G.
  4. What connections are available for these pumps? As standard, HTT pumps feature GAS threaded connections. Upon request, they can be supplied with NPT connections or DIN or ANSI 150 flanges.
  5. What happens if the pump runs dry? Dry running can damage internal components. For this reason, as an option, GemmeCotti recommends installing a device against dry running to protect the integrity of the pump.