Custom-Built Washing Platform for Public Works

Optimize your mobile cleaning with a robust, high-performance unit.

On-site cleaning, especially for managing public and municipal infrastructure, requires uncompromised power and mobility. Designed to fit perfectly into a pickup truck bed, this mobile unit redefines the efficiency of professional and municipal cleaning on the go.

Whether for public works, urban space maintenance, construction, agriculture, or transport, having hot water washing power at your fingertips is a strategic asset. Imagine being able to degrease heavy machinery, remove graffiti, clean wheelie bins, or sanitize public areas quickly and hassle-free. That is precisely what our custom washing solution delivers.

Our approach combines cutting-edge engineering with the highest quality components. The result is a robust, versatile, and easy-to-transport platform ready to face the daily demands of public works and the most rigorous environments.

Table of contents

1. Industrial Wash Skid Design
2. Hydro Tek Hot Water High-Pressure Washer
3. High-Performance Burner and Exhaust Flap
4. Commercial Polypropylene Tank
5. Fire Hydrant Filling System: Ideal for Public Works
6. Professional-Grade Accessories and Hose Guidance
7. Safety and Ergonomics for Field Teams
8. Turnkey Solution for Cities and Industries
9. A Versatile Solution for Thawing Catch Basins, Pipes, and Culverts
10. Technical Specifications
11. FAQ: Everything About the Mobile Wash Skid

Industrial Wash Skid Design

The foundation of our system is a high-pressure washer built on an industrial-grade stainless steel frame. This material choice ensures exceptional durability and increased resistance to corrosion caused by de-icing salt and harsh winter conditions encountered on public roads. The platform is constructed on a heavy-duty steel base to withstand the vibrations and sustained mechanical stress of daily urban transit.

Hydro Tek Hot Water High-Pressure Washer 

At the heart of this industrial wash skid is a gas-powered hot water pressure washer from Hydro Tek. Model SS40005VH is powered by a reliable Vanguard gasoline engine. Renowned for its dependability and performance, this engine ensures the system delivers an impressive 4000 PSI at a flow rate of 5 GPM.

This combination of high pressure and optimal water flow quickly removes stubborn dirt, oils, fresh paint, glue residue, and graffiti from sidewalks or street furniture. The cleaning power reduces downtime on public roads and maximizes the efficiency of municipal maintenance crews.

High-Performance Burner and Exhaust Flap 

To maximize cleaning efficiency—especially for sanitizing, degreasing, and clearing conduits or infrastructure—hot water is essential. Our industrial wash skid features a high-performance burner rated at 386,400 BTU. This burner heats water to high temperatures in under two minutes, eliminating downtime in the field.

Because municipal and public works vehicles are frequently parked outdoors in rain or snow, we installed a mechanical protective flap on the burner exhaust outlet (similar to tractor exhaust caps). This flap opens automatically under exhaust pressure upon startup and seals tight when shut down, preventing water, snow, and urban debris from entering the combustion chamber.

Commercial Polypropylene Tank 

Water autonomy is essential for running efficient cleaning rounds in urban environments without constant trips back to the yard. The Multi PSI industrial wash skid is equipped with a 225-gallon tank made of commercial-grade polypropylene.

This 225-gallon capacity ensures excellent operational runtime across multiple work locations in a single shift.

Fire Hydrant Filling System: Ideal for Public Works 

For extended operations, our platform includes a quick-fill system and adapter that connects directly to fire hydrants. This feature allows crews to refill the tank on-site directly from the pressurized municipal water grid.

Completed with a 25-foot fire hose, this system offers maximum supply flexibility, eliminating wasted travel time for refills and maximizing active cleaning time on the job.

Professional-Grade Accessories and Hose Guidance 

User-friendliness is critical to ensuring worker safety and comfort throughout the day. That is why our industrial wash skid features an industrial-grade Hannay Reels N700 series spring-rewind hose reel.

The reel configuration was specifically designed for roadside and sidewalk work: the drum is mounted on the front of the frame, but the hose guide points directly to the side of the vehicle. This layout allows operators to pull the 100-foot high-pressure hose (3/8") safely from the sidewalk without awkward angles or binding.

The unit also includes an ergonomic spray gun with a dual stainless steel lance. The dual lance lets operators instantly switch between a concentrated high-pressure stream (for stripping tough dirt) and a wide low-pressure spray for detergent application or quick rinsing.

Safety and Ergonomics 

Worker safety and vehicle stability were primary design focuses. The platform incorporates heavy-duty hold-down hoops and tie-downs to secure the tank, preventing load shifting during sudden braking or cornering in urban traffic.

The open layout facilitates daily checks, refueling, and routine maintenance. The clear sight gauge allows operators to monitor remaining water without interrupting workflow.

Turnkey Solution for Cities and Industries 

Optimized for standard pickup truck beds, this custom high-pressure wash skid adapts seamlessly to various municipal and commercial needs:

• Cities & Municipalities (Public Works & Roads): Street furniture cleaning, graffiti removal, park and bus shelter maintenance, wheelie bin washing, public area sanitizing, and emergency winter thawing of catch basins, pipes, and culverts.
• Construction & Civil Engineering: Rapid cleaning of heavy machinery (excavators, loaders), tools, formwork, and job site entrance washdowns.
• Transport & Logistics: Fleet vehicle maintenance, trailer washing, loading dock, and yard cleaning.
• Agriculture & Food Processing: Washing and sanitizing livestock buildings, tractors, and harvesting machinery.
• Forestry & Parks: Remote equipment maintenance and field cleaning.

This mobile, versatile, and effective cleaning solution is suitable for a wide variety of applications, offering significant added value to professionals.

A Versatile Solution for Thawing Catch Basins, Pipes, and Culverts 

Beyond standard high-pressure washing, this mobile hot water unit is a powerful tool against winter and spring freezes. During snowmelt or extreme cold snaps, ice buildup in catch basins, storm drains, PVC or concrete pipes, and municipal culverts can rapidly lead to backups or street flooding.

Thanks to its fast-heating capability (reaching temperatures between 65°C and 85°C / 150°F and 185°F), the unit enables targeted thermal thawing of drainage infrastructure without damaging the pipes. Injecting hot water under high pressure melts ice deep within conduits and clears frozen blockages quickly without toxic or corrosive chemicals, protecting both the environment and the sewer system. By equipping the lance with rotating nozzles or pipe jetting accessories, crews can clear a blocked catch basin or culvert in minutes. To learn more about field techniques and best practices for winter operations, explore our complete guide on the solution for thawing catch basins, pipes, and culverts.

Technical Specifications 

This summary table details the technical specifications of the Multi PSI industrial wash skid:

For public works directors, road maintenance managers, and contractors looking to optimize cleanliness, safety, and field productivity, this custom unit by Multi PSI is the ideal investment. Contact our technical team today to design the mobile unit best suited to your vehicle fleet.

FAQ: Everything About the Mobile Wash Skid 

What are the dimensions of the Multi PSI industrial wash skid? 

Dimensions vary depending on selected options, but the skid is specifically engineered to fit between the wheel wells of a standard pickup truck bed. Contact us for precise measurements.

Is the fire hydrant filling system included in the base price? 

No, the fire hydrant connection kit with the 25-foot fire hose is an available option highly recommended for public works and municipal applications.

How long does it take to heat the water? 

Thanks to the 386,400 BTU burner, the water reaches optimal washing or thawing temperature in under 2 minutes, allowing immediate operation upon arrival at the site.

What routine maintenance is required for the wash skid? 

Standard maintenance includes checking engine and pump oil levels, flushing the water tank periodically, and inspecting the spring-rewind mechanism on the hose reel.

How is the burner exhaust protected from rain and snow? 

We installed a mechanical exhaust flap (tractor-style) on the burner stack. It opens automatically under exhaust pressure when operating and seals shut when turned off, keeping rain, snow, and debris out of the system.

Can this unit be used to thaw catch basins and clear pipes in winter? 

Absolutely. With its capability to generate hot water under 4000 PSI, this unit is ideal for thawing frozen catch basins, PVC/concrete pipes, and municipal culverts during winter or spring thaw periods.

Can the wash skid be customized for our fleet? 

Yes, Multi PSI builds fully custom platforms. We can adapt tank capacity, hose reel placement, add secondary reels, or customize control locations based on your operators' requirements.

What is the delivery lead time for a municipal wash skid? 

Lead times depend on component availability, but once all parts are in our shop, full assembly, plumbing, and performance testing typically take about one week.

Why is the hose reel mounted at the front with a side guide? 

This design delivers optimal ergonomics and safety along roadways: keeping the reel weight centered maintains truck balance, while the side-facing guide lets operators pull the 100-foot hose directly toward the sidewalk without binding or damaging the line.

How does the Multi PSI custom skid compare to off-the-shelf units? 

Unlike standard off-the-shelf modules, our custom skid features a heavy-duty stainless steel frame, operator-centric ergonomics (side hose guide, exhaust flap), and repairable commercial-grade components backed by over 25 years of technical expertise.

Author: Multi PSI has been an expert in high-pressure washing equipment for over 25 years. As an equipment distributor, we also offer mobile and workshop repair services. We are recognized for our expertise in custom projects, including washing platforms and trailers, as well as the installation of washing systems with reels, poles, or rails.

Updated on September 4, 2026