slm av

single-stage centrifugal pump
with magnet drive

Flow Rate

up to 3.500 m³/h

Delivery Head

up to 220 m L.C.

Temperature Range

-120 °C to +450 °C

Pressure Rating

up to PN 400

KEY FACTS

  • Design according to ASME B73.3-2003
  • Maintenance-Free Permanent Magnet Drive
  • Modular Design
  • No Dynamic Seal, Separation of Liquid Chamber and Atmosphere by Means of Containment Shell

DESIGN

  • Single-Stage Centrifugal Pump in Process Design
  • Synchronous Permanent Magnet Drive
  • Easy to Maintain
  • Separation of liquid Chamber and Atmosphere by means of Containment Shell
  • Bearing Bracket with Oil-Lubricated or Greased-for-Life Anti-Friction Bearings; Optional: Close-Coupled Design
  • Product-Lubricated Journal Bearings; Made of Silicon Carbide (SSiC); Customized Materials (e.g. Carbon, WOC etc.) on demand

OPERATING RANGE

Flow Rate Q 3.500 m³/h
Delivery Head H up to 220 m L.C.
Temperature t -120 °C to +450 °C
Pressure Rating p up to PN 400

Higher flow rates upon request

TYPICAL APPLICATION

  • Acids
  • Lyes
  • Hydrocarbons
  • Aggressive, Explosive and Toxic Liquids
  • Liquid Petroleum Gases (LPG)
  • Heat Transfer Liquids
  • Coolants
  • Liquids Containing Solids
  • High-Viscosity Liquids

CUSTOM MATERIALS

Pump casing: 1.4408
Impeller: 1.4408
Containment Shell: 1.4571/2.4610
Magnet Carrier: 1.4571
Radial journal Bearings: Silicon Carbide
Intermediate Lantern: 1.0619
Bearing Carrier: 0.7043

Further materials are available.

Flow Rate

up to 3.500 m³/h

Delivery Head

up to 220 m

Temperature Range

-120 °C to +400 °C

Pressure Rating

up to PN 400

key facts

  • No Alignment between Pump and Motor
  • No Coupling and Coupling Guard
  • No Ball Bearings
    • Pump does not require scheduled Maintenance
    • No Oil Lubrication necessary
    • Lower noise level
  • High Stiffness of the Pump Shaft because of small overhung compared to Pumps with Shaft Seals
  • Use of standard high efficient IEC and NEMA Motors contrary to canned Motors
    • Better availability with standard Motors
    • Maintenance of Motors is standardized and can be done by the customer on site
  • Base Plates for Close-Coupled Design do not need to be rigid acc. to API 685 – 7.3

TYPICAL APPLICATION

  • Acids
  • Lyes
  • Hydrocarbons
  • Aggressive, Explosive and Toxic Liquids
  • Liquid Petroleum Gases (LPG)
  • Heat Transfer Liquids
  • Coolants
  • Liquids Containing Solids
  • High-Viscosity Liquids

OPERATING RANGE

Flow Rate Q= 3.500 m³/h
Delivery Head H= up to 220 m
Temperature t= -120 °C to +400 °C
Pressure Rating p= up to PN 400

Higher flow rates upon request

CUSTOM MATERIALS

  • Pump casing: 1.4408
  • Impeller: 1.4408
  • Containment Shell: 1.4571/2.4610
  • Magnet Carrier: 1.4571
  • Journal Bearings: Silicon Carbide
  • Intermediate Lantern: 1.0619
  • Bearing Bracket: 0.7043

Further Materials are available

Close-Coupled Design:

Variants Design Note
SLM AVB Close-Coupled Pump Motor lantern (without shaft coupling)

NACHSETZZEICHEN (AUSFÜHRUNGEN):

H1 Heated Pump Casing
H2 Heated Bearing Lantern
S Thermal Barrier without Secondary Seal
W Thermal Barrier with Secondary Seal
F Internal Filter
E1 External feed, internal partial flow holes closed off
E2 External Flushing / Venting, internal partial flow holes open
E1F External partial flow with main flow filter according to DGRL
D Double Containment Shell
J Inducer

DESIGN VARIANTS

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.

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.

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.

Inducers are often used in cases where the installation’s NPSH values are extremely low. Inducers substantially reduce pump NPSH throughout the installation without altering pump characteristics. Inducer J can be retrofitted on existing pumps, in most cases with only a minimum amount of pump modification.