Guide to pumps for truck wash systems

Wash systems for trucks and industrial vehicles represent one of the most demanding applications for piston pumps, because they require cleaning very large surfaces in a short time, with continuous work cycles and with technical specifications that are profoundly different from those of a common car wash for passenger vehicles. In this in-depth article, we analyze the specifications that a pump for truck washing must have, why in this sector flow rate matters more than absolute pressure, and how the Hawk range addresses these needs. In the second part, we present the most suitable solutions, with a focus on the MXT and MXT High Flow series, developed to operate consistently in systems dedicated to washing industrial vehicles.

Pumps for truck wash systems: what they must deliver

A truck has a much larger surface to wash than a passenger car, but the nature of the dirt to be removed is similar: dust residue, mud, insects, road salt. In this context, the operating pressure doesn't need to be extreme, because a jet that's too concentrated could damage sensitive components such as cab frames, indicator lights, windows, and plastic parts. The pressure typically used is medium-low, up to a maximum of about 120 bar, while the true key parameter is the water flow rate, which must be high in order to wet and clean large surfaces in just a few minutes.

Added to this is another typical requirement of systems for industrial vehicles: continuous operation. A truck wash gantry can operate 24 hours a day, with wash cycles that vary considerably in terms of duration, detergent dosage, and water temperature. The essential technical specifications are therefore:

• High flow rate, indicatively between 70 and 150 liters per minute, to ensure rapid coverage of the entire profile of the vehicle.
• Medium-low operating pressure, up to 120 bar, sufficient to remove dirt without damaging the surfaces.
• Reliability for extended cycles, with compatibility with hot, demineralized, or osmosis-treated water and with chemical detergents of varying strength.

Which pumps are ideal for truck wash systems?

The ideal pumps for truck wash systems are piston pumps capable of sustaining high flow rates with operating pressures between 80 and 120 bar and of running in continuous operation. For this sector, Hawk has developed a dedicated range that brings together all the series designed for car wash systems, from small multi-bay self-service stations to automatic gantries for heavy-duty vehicles.

Within this range, the series most suited for trucks and industrial vehicles are the MXT and the MXT High Flow: these are high-flow pumps with a maximum pressure of 200 and 130 bar respectively, values that allow them to work comfortably in the operating range typical of truck washing.

The MXT series: Hawk's solution for washing trucks and industrial vehicles

The MXT pump for medium-to-large flow systems

The MXT series offers flow rates between 70 and 100 liters per minute and a maximum pressure of 200 bar. It's the typical choice for medium-sized truck wash systems, where substantial flow rates are needed but the number of spray nozzles operating simultaneously doesn't require even higher values. Operating in the 80–120 bar range, the MXT delivers its optimal working point, ensuring uniform performance across longer cycles.

The MXT High Flow pump for high-productivity truck wash gantries

The MXT High Flow series is a version designed for configurations that require even greater flow rates: it reaches up to 150 liters per minute, while maintaining a maximum pressure of 130 bar. It's the reference pump for automatic gantries dedicated to washing trucks, buses, heavy transport vehicles, and industrial vehicle fleets, where the productivity of the system depends directly on the amount of water delivered. The combination of high flow rate and contained pressure makes it possible to reduce the power consumed compared with solutions that push harder on pressure, keeping energy costs per wash cycle in check.

Why choose Hawk for industrial vehicle wash pumps

Hawk's pumps for truck wash systems are designed, manufactured, and tested at the Reggio Emilia plants, in a production cycle certified ISO 9001:2015, ISO 14001:2015, ISO 50001:2018, and ISO 45001:2018. In addition to build quality, the Hawk range stands out for the availability of dedicated accessories (electric motors, flanges, couplings, regulating valves) engineered for each pump series, in order to simplify system design and reduce installation times. To identify the most suitable configuration for the type of system, the productivity required, and the quality of the water available, the Hawk technical team supports the choice of the model and accessories aligned with the project.

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