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The Karcher HD 7/12-4 M ST Cold Water Pressure Washer 240V — also referred to as the HD 7/12-4 M ST, HD7/12-4 M ST and HD-7/12-4 M ST — is a robust stationary pressure washer designed for permanent installation in commercial, industrial and workshop environments. Offering increased pressure and flow over smaller ST units, the Karcher HD 7/12-4 M ST is ideal for vehicle bays, production areas, service workshops, food facilities and controlled cleaning zones.
Powered by a long-lasting four-pole induction motor and a durable three-piston axial pump, the Karcher HD 7/12-4 M ST Cold Water Pressure Washer 240V delivers strong, reliable cleaning performance with reduced noise and excellent efficiency. Its wall-mounted ST format ensures a clean, safe and clutter-free workspace by keeping the machine elevated and protected from floor-level hazards.
This unit is engineered for professional daily use, featuring integrated safeguards to extend pump life, a service-friendly layout and the ability to operate as a central cleaning station with fixed hose routing. The Karcher HD 7/12-4 M ST provides dependable, high-level performance for sites requiring a compact yet powerful permanent cleaning solution.
Why should I buy a Karcher HD 7/12-4 M ST Cold Water Pressure Washer 240V?
The Karcher HD 7/12-4 M ST is perfect for commercial sites needing a fixed 240V pressure washer with superior durability and performance. Its wall-mounted format, powerful motor and professional pump system make it ideal for workshops, service bays, industrial facilities and production environments where reliable cleaning is essential.
Product Key Features
- 240V stationary system – ideal for fixed installation in commercial and industrial cleaning areas.
- Four-pole induction motor – efficient, quiet and built for extended service life.
- Three-piston axial pump – reliable, long-lasting and designed for daily professional use.
- Capable of detergent application – supports low-pressure chemical suction for applying cleaning agents.
- Wall-mounted ST chassis – keeps floors clear, improves safety and reduces equipment clutter.
- High-performance pressure output – suitable for vehicles, machinery, tools and industrial work areas.
Accessories Included
| Pump Specifications | |
| Water Flow Rate | 700 Litres / Hour |
| Operating Pressure | 120 Bar |
| Max. Pressure | 180 Bar |
| Variable Pressure | No |
| Detergent System | None |
| Max. Water Feed Temperature | 60° C |
| Water Network Separation | None |
| Power Specifications | |
| Motor Type | 4-Pole Induction Motor |
| Powered By | 240 V Electric Motor |
| Power Rating | 3.1 kW |
| Cable Length | 5 Metres |
- Availability:
- Weight: 27.50kg
- Dimensions: 599.00mm x 448.00mm x 405.00mm
- Part No.: 1.524-937.0
- Barcode: 4054278504926







































