Magnet drive dual flow centrifugal pump SLM ZVO


Design features

  • Horizontally mounted centrifugal pump with a center-divided casing
  • Suction and pressure nozzles in the lower section
  • Magnet drive
  • Leakproof
  • Modular system
  • Thermal barrier
  • Secondary seal
  • Oiled ball bearing

Technical data
Q up to 2,000 m3/h with 50Hz / up to 2,400 m3/h with 60Hz
H up to 160 m with 50Hz / up to 230 m with 60Hz
t from -20°C up to +300°C
p up to PN 25
Special constructions and
higher outputs available.

Standard construction

Pump casing: 316 SS or nodular iron
Impeller: 316 SS
Isolation shell: 316 Ti/Hastelloy C4
Magnet carrier: 316 Ti
Internal bearings: silicon carbide
Bearing lantern: nodular iron
Bearing carrier: ductile iron
Other materials available

Identification code:


Suffixes (designs):


jacketed bearing lantern


thermal barrier without secondary seal


thermal barrier with secondary seal


internal filter


external feeding, internal secondary-flow boring enclosed


external flushing and venting; internal secondary-flow boring non-enclosed


external secondary flow with main flow filter per DGRL


Design variants

Heated pump H2
This pump's bearing lantern (H2) integrates a heat jacket, which in the standard construction allows for operating pressure of 16 bar at 200 ?°C (steam) or 6 bar at 350 ?°C. The heat jacket can also be used for cooling.

S or W thermal barrier and secondary seal
The thermal barrier acts as a structural element between the bearing carrier (in the bearing carrier model) or drive motor (in the close coupled model), whereas the hydraulic system allows for heat transfer. This reduces ball bearing temperatures in the gearing when hot liquids are being transported. A radial shaft sealing ring can also be integrated into the thermal barrier for purposes of sealing the magnet driver. The sealing ring acts as a secondary seal that prevents the product from leaking into the environment through a leak in the isolation shell. In order for this secondary seal to be used, the magnet driver chamber must be monitored so that leaks can be detected in good time.

Internal filter F
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.

External feed and flushing connections E1 and E2
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.