slm nvt

Single-stage submersible centrifugal pump with magnet drive

Flow Rate

max. 900 m³/h

Delivery Head

max. 200 m L.C.

Temperature Range

-50 °C to +200 °C

Pressure Rating

max. PN 40

key facts

  • Design according DIN EN ISO 2858 / DIN EN ISO 15783
  • Maintenance-Free Permanent Magnet Drive
  • Modular Design
  • No Dynamic Seal, Separation of Liquid Chamber and Atmosphere by Means of Containment Shell
  • Submerging Depth up to 10.000 mm


  • Vertically Mounted Centrifugal Pump
  • Submerging Depth up to 10.000 mm
  • Dry Support Tube
  • Synchronous Permanent Magnet Drive
  • Easy to Maintain
  • Seperation of Liquid Chamber and Atmosphere by Means of Isolation Shell
  • Bearing Bracket with Greased-for-Life Anti-Friction Bearings
  • Product-Lubricated Journal Bearings; Made of Silicon Carbide (SSiC); Customized Materials (e.g. Carbon, WOC etc.) on demand


Flow Rate Q 900 m³/h
Delivery Head H max. 200 m L.C.
Temperature Range t -50 °C to +200 °C
Pressure Rating p max. PN 40

Special constructions up to PN100, Higher outputs available


  • Acid
  • Lyes
  • Hydrocarbons
  • Heat Transfer Liquids
  • Aggressive, Explosive and Toxic Liquids
  • Industrial Effluent


Pump casing: 1.4408 or 1.0619
Impeller: 1.4408
Containment Shell: 1.4571/2.4610
Magnet carrier: 1.4571
Internal bearings: Silicon Carbide
Bearing lantern: 1.4571
Bearing carrier: 0.7043
Pressure tube: 1.4571
Support tube: 1.4571

Tank Flange: 1.4571 or according to customer’s specifications, Other Materials available


H1 heated pump casing
H2 jacketed bearing lantern
F internal filter
E1 external feedm, internal secondary-flow boring enclosed
E2 external flush and venting; internal secondary-flow boring non-enclosed
E1F external secondary flow with main flow filter per DGRL


The pumps are outfitted with a heat jacket and pump casing (H1) and/or a heat jacket in the bearing lantern (H2). Both heat jackets can be realized either separately or in conjunction with a bypass line. The heat jackets in the standard construction are rated for operating pressure of 16 bar at 200 °C (steam) or 6 bar at 350 °C. The heat jackets can also be used for cooling.

When solids-containing liquids are being transported, the internal filter prevents inadmissibly large particles from entering the flow channels, and from there the magnetic coupling and internal bearings.

These external connections allow for external flushing, feeding and/or venting. Connection E1 is used in situations where a continuous feed into the magnet drive is desired. Connection E2 is used suitable for short-term flushing, or for external venting of the magnetic coupling.

The double isolation shell should be used in situations requiring a high level of safety. The unit consists of two interlocking isolation shells, both of which are rated for the relevant operating conditions. If one of the two units is damaged, the casing still remains leaktight. The gap between the two units can be monitored.