slm nho
Single-stage centrifugal pump with Magnet Drive for high temperature applications
Flow Rate
max. 1.200 m³/h
Delivery Head
max. 215 m L.C.
Temperature Range
-120 °C to +450 °C
Pressure Rating
max. PN 40
key facts
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Design according to DIN EN ISO 2858 / DIN EN ISO 15783
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Temperature Range up to 450 °C
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Maintenance-Free Permanent Magnet Drive
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Modular Design
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No Dynamic Seal, Separation of Liquid Chamber and Atmosphere by Means of Containment Shell
DESIGN
- Single-Stage Centrifugal Pump in Process Oriented Design
- Temperature Range up to 450 °C
- Synchronous Permanent Magnet Drive
- Easy to Maintain
- Seperation of Liquid Chamber and Atmosphere by Means of Isolation Shell
- Bearing Bracket with Oil-Lubricated 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 | 1.200 m³/h |
| Delivery Head | H | max. 215 m L.C. |
| Temperature Range | t | -120 °C to +450 °C (uncooled) |
| Pressure Rating | p | max. PN 40 |
Special constructions up to PN400. Higher outputs available.
TYPICAL APPLICATION
- Acids
- Lyes
- Hydrocarbons
- Aggressive, Explosive, Toxic and Malodorous Liquids
- Liquid Gases
- Heat Transfer Liquids
- Coolants
- Liquids Containing Solids
- High-Viscosity Liquids
CUSTOM MATERIALS
| Pump casing: | 1.0619 or 1.4408 |
| Impeller: | 1.4408 |
| Containment shell: | 1.4571/2.4610 or Titanium |
| Magnet carrier: | 1.4571 |
| Radial journal bearings: | Silicon Carbide |
| Bearing carrier: | 0.7043 |
Further materials upon request.
Flow Rate
max. 1.200 m³/h
Delivery Head
max. 215 m
Temperature Range
-120 °C to +450 °C
Pressure Rating
max. PN 40
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
DESIGN
- Close-Coupled Design
- Process oriented design
- Magnet drive
- Leakproof
- Horizontally mounted
- Modular system
OPERATING RANGE
| 50Hz | 60Hz | ||
| Flow Rate | Q | 3.500 m³/h | 4.200 m³/h |
| Delivery Head | H | 150 m | 215 m |
| Temperature Range | t | -50 °C bis +250 °C bis +300 °C | Typ NVN/NVS TYP NVO |
| Pressure Rating | p | PN16 |
TYPICAL APPLICATION
- Acids
- Lyes
- Hydrocarbons
- Aggressive, Explosive and Toxic Liquids
- Liquid Gases
- Heat Transfer Liquids
- Coolants
- Liquids Containing Solids
- High-Viscosity Liquids
CUSTOM MATERIALS
- Pump casing: 1.4408 oder 1.0619
- Impeller: 1.4408
- Containment shell: 1.4571/2.4610
- Magnet carrier: 1.4571
- Internal bearings: Siliciumcarbid
- Bearing lantern: 1.0619
- Other materials available
NACHSETZZEICHEN (AUSFÜHRUNGEN):
| H1 | heated pump casing |
| H2 | jacketed bearing lantern |
| S | thermal barrier without secondary seal |
| W | thermal barrier with secondary seal |
| F | internal filter |
| E1 | external feeding, internal secondary-flow boring enclosed |
| E2 | external flushing and venting; internal secondary-flow boring non-enclosed |
| E1F | external secondary flow with main flow filter per DGRL |
| 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.
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.
