Allweiler Series SN Screw Pump
The Allweiler Series SN is a Three-Screw Pump for general applications up to 100 bar.
Allweiler SN Series Overview
The Allweiler SN Series is a versatile three-screw rotary pump designed for general industrial applications with operating pressures of up to 100 bar. Renowned for its reliability, smooth flow characteristics, and exceptional flexibility, the SN series can handle a wide range of chemically neutral and lubricating liquids across numerous industries.
Thanks to its three-screw design, the SN series delivers low-pulsation flow, quiet operation, high efficiency, and excellent self-priming capabilities, making it fitting for both transfer and circulation duties in demanding operating environments.
Suitable Fluids
The Allweiler SN series is designed for handling a broad range of liquids, including:
- Fuel oils
- Lubricating oils
- Hydraulic oils
- Cutting oils
- Coolant oils
- Cooling oils
- Waxes
- Tar oils
- Polyols
- Isocyanates
- Paints
- Lacquers
- Other chemically neutral and lubricating liquids
Typical Applications
The Allweiler SN series provides reliable high pressure pumping performance for industrial, hydraulic, marine, and chemical processes, ensuring efficient fluid transfer and circulation across a wide range of applications.
Common applications include:
- Oil-fired systems
- Hydraulic systems
- Mechanical engineering
- General industrial processes
- Chemical and petrochemical industries
- Marine and offshore engineering
Key Features
- Three-screw rotary pump design
- Operating pressures up to 100 bar
- Self-priming capability
- Smooth, low-pulsation flow
- Reversible hydraulic design
- Suitable for continuous-duty operation
- Available with shaft sealing
- Suitable for motor-mounted or gear-mounted configurations
- Flexible installation and mounting options
Installation Options
The SN series offers extensive installation flexibility to suit virtually any system layout:
- Baseplate-mounted design (pump and motor mounted on a common base)
- Bulkhead mounting
- Pedestal mounting
- Dry installation
- Submerged design
- In-tank installation
- Horizontal installation
- Vertical installation
- Motor-mounted pump arrangement
- Gear-mounted pump arrangement
Technical Details
| Series | Specifications | Max. Capacity [l/min] |
Max. Inlet Pressure [bar] |
Max. Outlet Pressure [bar] |
Max. Fluid Temperature [°C] |
Viscosity Range [mm²/s] |
|---|---|---|---|---|---|---|
| SN | Flexibly available in all variants | 5,300 | 10 | 100 | 250 | 3-5,000 |
Installation Characteristics
| Parameter | Description |
|---|---|
| Pump Type | Three-Screw Rotary Pump |
| Maximum Pressure | Up to 100 bar |
| Installation | Horizontal or Vertical |
| Mounting Options | Baseplate, Bulkhead, or Pedestal Mounted |
| Installation Type | Dry-Mounted, Submerged, or In-Tank |
| Drive Options | Motor-Mounted or Gear-Mounted |
| Priming | Self-Priming |
| Hydraulic Design | Reversible |
| Sealing | Shaft Seal |
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