Bơm dòng W
The KRAL pump for difficult fluids.
The W series from KRAL is primarily used when dirty or low-viscosity media are used. Robust polymer coating and continuous flow rates at differential pressures up to 120 bar – these features are combined in the KRAL W series screw pump.
- Delivery rate: 15 to 290 l/min.
- Max. differential pressure: 120 bar.
- Viscosity: > 1 mm²/s.
- Max. temperature: To 180 °C, magnetic coupling to 300 °C.
- Installation: Wet or dry.
- Spindle housing: Nodular cast iron EN-GJS-400, polymer-coated or other material options.
- Screws: Steel, nitrided.
Pumped fluids such as cooling lubricants are difficult liquids. They contain abrasive dirt, mostly metal residues, and must be pumped at high pressure. In addition, they have a very low viscosity of only about 1 mm²/s.
In the KRAL screw pump of the W series, the screw material and the casing coating have been designed for improved sliding properties in such a way that low viscosity fluids can be pumped with high efficiency.
The running casing is coated with a resistant polymer that can absorb particles. The balancing cylinder of the screw pump has orifice insertions to reduce the leakage rate, therefore efficiency remains high.
- Flow rates up to 880 l/min.
- Viscosity of 10,000 mm²/s.
- Pressure maximum up to 100 bar.
- Easy installation.
- Inexpensive product for various pumped media.