Discover how to choose the best water truck tank for your fleet. Klein Products breaks down tank sizes, materials, and features that deliver durability, safety, and unmatched performance.
What Is a Water Truck Tank?
A water truck tank is the engineered heart of any dust control, soil compaction, or fire suppression system. It transports and distributes thousands of gallons of water across large worksites, mines,
quarries, construction zones, and municipalities.
At Klein, our tanks do more than distribute water. They are precision tools designed to keep crews safe, keep jobsites productive, and maximize the efficiency of all equipment on the jobsite.
Why Tank Design Matters:
Tank design directly impacts:
- Safety for the jobsite and the operator
- Visibility around the machine and view of the jobsite workspace
- Functionality
- Vehicle stability
- Water flow control, precise and accurate
- Pump performance. Delivering volume and pressure discharge where and when you need it
- Longevity. Ensuring investment is well spent
Klein’s industry-leading tanks feature:
- Innovative TRAP shape maximizes safety, visibility, and operator comfort
- Flanged tank heads & baffles. Adding necessary strength interior and exterior, maximizing effective service life, and protecting investment
- Internal baffles to minimize water surge
- Reinforced weld seams and corner bracing
- Optimized geometry for perfected load distribution
- Corrosion-resistant coatings
Because when it’s built right from the start, it works better and for longer.
Choosing the Right Tank Size
The right size tank is about matching capacity to your use case:
- K200 Series (2,000 gallons): Ideal for medium/heavy duty, on/off-road vocational truck applications
- K250 Series (2,500 gallons): Ideal for medium/heavy duty, on/off-road vocational truck applications
- K300 Series (3,000 gallons): Ideal for medium/heavy duty, on/off-road vocational truck applications
- K350 Series (3,500 gallons): Ideal for medium/heavy duty, on/off-road vocational truck applications
- K400 Series (4,000 gallons): Ideal for medium/heavy duty, on/off-road vocational truck applications
- K450 Series (4,500 gallons): Ideal for medium/heavy duty, on/off-road vocational truck applications
- K500 Series (5,000 gallons): Ideal for heavy-duty off highway truck applications
- K600 Series (6,000 gallons): Ideal for heavy-duty off highway truck applications
- K650 Series (6,500 gallons): Ideal for heavy-duty off highway truck applications
- K700 Series (7,000 gallons): Ideal for heavy-duty off highway truck applications
- K800 Series (8,000 gallons): Ideal for heavy-duty off highway truck applications
- K900 Series (9,000 gallons): Ideal for heavy-duty off highway truck applications
- K1000 Series (10,000 gallons): Ideal for heavy-duty off highway truck applications
- K1300 Series (13,000 gallons): Ideal for heavy-duty off highway truck applications
- K1500 Series (15,000 gallons): Ideal for heavy-duty off highway truck applications
- K2000 Series (20,000 gallons): Ideal for heavy-duty off highway truck applications
- K2500 Series (25,000 gallons): Ideal for heavy-duty off highway truck applications
- K3000 Series (30,000 gallons): Ideal for heavy-duty off highway truck applications
- K4000 Series (40,000 gallons): Ideal for heavy-duty off highway truck applications
Our engineering team can tailor tank size, prefect weight distribution, and design custom discharge specs for any truck tank, any model, any size, and any application.
Steel vs. Poly: Why Klein Chooses Steel
While poly tanks have a place in light-duty applications, Klein uses ASTM Prime, mild steel plate. Maximizing durability and reliability without compromising weight.
- Holds shape under extreme pressure
- Holds shape under extreme pressure
- Longest lifespan, even in corrosive or abrasive environments
- Stainless steel is an optional steel choice for severe corrosive environment
Our tanks are manufactured to last 25+ years. Many are still on worksites after 40+ years!
Advanced Features That Set Us Apart
Klein water tanks aren’t one-size-fits-all. They’re one-solution-fixes-your-problem.
- Trap tank design: Ultimate jobsite & operator safety
- Internal Baffles: Prevent surge and stabilize the load
- Manways & Access Doors: Simplified maintenance
- Ergonomic, modern controls: Safer and easier to operate
- SmartSpray® Integration: Variable-rate spray control independent of truck RPMs
- Soft-Start & SoftShift Pump/Valve Systems: Protects the operator and chassis
Tank Mounting: Built for the Right Chassis
At Klein Products, we engineer our tanks to align perfectly with the industry’s most durable and high-performing truck chassis, ensuring structural integrity, perfected weight distribution, operator safety, and jobsite reliability.
Featured Medium- and Heavy-Duty On/Off Road Chassis:
- Kenworth, Peterbilt, International, Freightliner, Mack, and Ford
Featured Off-Highway Chassis:
- Caterpillar, Komatsu, Deere, and Volvo
Whether you’re working on-road or off, our tanks are tailored to integrate flawlessly, setting the standard in custom fitment and long-term reliability.
Klein Tank Models
- K200 (2,000 gallons):
- K250 (2,500 gallons):
- K300 (3,000 gallons):
- K350 (3,500 gallons):
- K400 (4,000 gallons): Our flagship build
- K450 (4,500 gallons):
- K500 (5,000 gallons): Extra volume for heavy-duty tasks, larger jobsites
- K600 (6,000 gallons):
- K700 (7,000 gallons):
- K800 (8,000 gallons): perfect for mining sites, aggregate operations, and duty dust control
- K900 (9,000 gallons):
- K1000 (10,000 gallons):
- K1300 (13,000 gallons):
- K1500 (15,000 gallons):
- K2000 (20,000 gallons):
- K2500 (25,000 gallons):
- K3000 (30,000 gallons):
- K4000 (40,000 gallons):
All available with optional equipment, mounting configurations, and add-on systems like SmartSpray® and Pulser Control.
Retrofit/Repurpose Your Fleet—Don’t Replace It
Aging haul trucks can get a second life as water trucks. Our retrofit/repurpose solutions:
- Save up to 60% or more over new tank installs on “new” chassis
- Extend useful life by over a decade
- They are typically completed in about 2 days once the tank & chassis are prepped and ready
And with SmartSpray® and hydraulic upgrades, these converted trucks often outperform their factory-built counterparts.
Tank Maintenance: Protecting Your Investment
Your Klein tank is built to last, but a little care goes a long way:
- Annual pressure testing, tank & discharge equipment
- Visual inspections at every maintenance interval
- Drainage and flushing protocols
- Keep sediment out with pre-screened water sources
- Pump, valve & other key equipment regular maintenance
When you take care of it, your Klein tank takes care of everything else.
Why Klein Products Sets the Industry Standard
- ISO 9001:2015 Certified Quality Managed factory
- Well over 10,000 units delivered across 50+ countries
- Unrivaled expertise in retrofit/repurpose engineering, all chassis brands, models & sizes
- Proudly American-made, globally proven
From Orange County, CA, to the deserts of Egypt and beyond, our tanks are trusted to do the hard work, day after day, decade after decade.
Ready to Build the Best? Let’s Talk!
Contact us today! 800-646-4546