Neptune drum pump technology
The drum pumps Neptune are a modular system of two main modules – a pump tube, which is immersed in the drum or container, and a motor, which is mounted on top. The tube material is chosen according to the liquid, and the motor according to the place of use. Every tube can be combined with a suitable motor, and for smaller quantities we also offer hand pumps.
How a drum pump works
- Motor. The motor is attached to the upper end of the tube and turns the shaft that runs along its entire length.
- Impeller. At the lower end of the tube, immersed in the liquid, the shaft turns the impeller (rotor).
- Lifting. The impeller draws the liquid from the bottom of the drum and pushes it up the tube.
- Outlet. The liquid leaves through the outlet at the upper end – to a hose, nozzle or flow meter.
The pumps are designed for continuous operation and are easy to move from one container to another.
Tubes – according to the liquid
| Tube material | Suitable liquids | Shaft | Max. temperature |
|---|---|---|---|
| Polypropylene (PP) | Neutral, aggressive and low-flammability liquids – acids, alkalis, detergents | Stainless steel 316 or Hastelloy 2.4610 | 50 °C |
| PVDF | Highly aggressive liquids – concentrated acids and alkalis | Hastelloy 2.4610 | 90 °C |
| Aluminium | Neutral, low-flammability liquids, especially mineral oils up to 1,000 mPas | Stainless steel 316 | 90 °C |
| Stainless steel 316 Ti | Neutral and slightly aggressive liquids – diluted acids and alkalis, detergents, liquid foods | Stainless steel 316 | 90 °C |
Motors – according to the place of use
| Motor | Type | Power | Protection / application |
|---|---|---|---|
| N-180 | Electric, 230 V, 50 Hz | 640 W | IP24 – normal conditions |
| N-280 | Electric, 230 V, 50 Hz | 825 W | IP24 – normal conditions, higher flow rate |
| N-ARIA 1 | Pneumatic, up to 6 bar | 300 W | ATEX – for hazardous areas |
| N-460 | Explosion-proof electric, 230 V, 50 Hz | 640 W | IP55, II 2G Ex db IIC T6 Gb – for hazardous areas |
Safety
- With flammable liquids or in a hazardous area, use the N-ARIA 1 pneumatic motor or the N-460 explosion-proof motor with a suitable tube.
- With flammable liquids, the pump, the drum and the receiving container must be earthed – for this we offer an earthing kit with four cables.
- Check the chemical compatibility of the tube, seals and hose with the liquid.
- Do not exceed the maximum temperature of the tube material.
How to choose a drum pump
- Liquid. Choose the tube material according to the chemical composition, viscosity and temperature.
- Container. Choose the tube length according to the height of the drum or container.
- Place of use. Electric motor for normal conditions, pneumatic or explosion-proof for hazardous areas.
- Quantity. For small quantities without a power supply – a hand pump.
- Accessories. Drum adapters, filters, nozzles and electronic flow meter – see the accessories.