420S
420S — Cold Water Electric Power Washer
BUILT FOR SERIOUS OPERATORS.
Alkota 420S is an industrial-grade cold water cleaning system engineered in South Dakota by Alkota and built for the demanding conditions of UK commercial and industrial operators. Delivering 138 bar (2000 PSI) at 14 L/min (3.7 GPM), it features Alkota's signature heavy-gauge welded chassis and precision-engineered oil bath crankcase|triplex ceramic plunger.
Built for intensive continuous duty, the Alkota 420S combines high-efficiency heat exchange with industrial-grade mechanical components. Alkota's proprietary coil technology features a hydro-insulated cold-water wrap that protects operators, pre-heats incoming water, and eliminates thermal shock — backed by a 7-year warranty.
Oil Bath Crankcase
Oil-bath crankcase and ceramic plungers running at lower RPM for cooler, vibration-damped longevity.
Schedule 80 Hydro-Insulated Cold Water Wrap Coil Coil
Hydro-insulated cold water wrap pre-heats water, protects operators, and eliminates thermal coil stress.
7-Year Coil Warranty
The benchmark in industrial heating reliability. Alkota Schedule 80 coils are guaranteed for 7 years.
Welded Steel Chassis
Heavy-gauge welded structural steel frame with powder coat finish built to survive demanding site environments.
Full Technical Specifications
| Operating Pressure | 138 BAR(2000 PSI) |
| Water Flow Rate | 14.0 L/min(3.7 GPM) |
| Electrical Supply | 230 v / 1-Phase |
| Drive Unit | Electric · 3.7 kW · (5 HP) |
| Operating Weight | 170 kg(375 lbs) |
| Dimensions (L×W×H) | 1232 × 737 × 826 mm |
| Chassis / Mobility | 4-Wheel Heavy-Duty Pneumatic Chassis |
| Pump Architecture | Oil Bath Crankcase · Triplex Ceramic Plunger |
| Heating Coil System | Schedule 80 Hydro-Insulated Cold Water Wrap Coil |
| Duty Rating | Continuous Industrial Duty (6–10 hrs/day) |
| Coil Warranty | 7 Years (Hydro-Insulated) |
Primary Industrial Use Cases
Standard Engineering Features
Factory-Available Options
Engineering Documentation
Official Alkota Factory Publications
Hog Heaven — 2,400-Head Swine Facility Deep Clean
See how extreme industrial cleaning challenges push professional Alkota equipment beyond ordinary pressure washing. The inaugural Mess Quest episode: tackling massive biological muck, encrusted manure, and biosecurity sanitisation across a 2,400-head swine finishing barn.
SPECIFY THE 420S.
Connect directly with Alkota UK application engineers to verify flow rates, power supplies, wash bay layouts, or trailer integration. We provide direct factory quotations and technical advice.