The Water Trailer—also known as a towable water tanker, mobile fire-suppression and dust-control trailer, or mobile sprinkler trailer—is an integrated water storage and spraying unit designed to be towed by vehicles such as pickup trucks, tractors, or off-road vehicles. Equipped with an independent diesel-powered water pump, a high-capacity polyethylene (PE) water tank, and an adjustable high-pressure water cannon, it combines multiple functions—including water storage, spraying, dust suppression, basic firefighting, irrigation, and cleaning—into one versatile unit. It is widely used in settings such as construction sites, landscaping projects, farms, industrial facilities, and rural firefighting operations. The image shows the standard commercial two-wheel model.

Water Trailer Structure

High-Capacity Food-Grade PE Water Tank

A white, thickened, one-piece molded polyethylene tank that is corrosion-resistant, rust-proof, and resistant to sun and frost. Available in capacities ranging from 1 to 5 tons. Features a top fill port and a bottom drain valve for easy cleaning and maintenance; lightweight and leak-resistant.

Independent Diesel-Powered Pump Unit

Equipped at the front with a single-cylinder diesel engine and a high-pressure centrifugal pump. It operates independently of the towing vehicle's power, ensuring a stable water supply whether stationary or in motion. Includes a control panel for one-touch start/stop and pressure adjustment, delivering sustained, powerful water pressure.

Universal High-Pressure Fire Monitor

A vertical, rotatable red fire monitor capable of 360° horizontal rotation and adjustable pitch (up/down). It offers switchable spray patterns—concentrated jet or mist—and long-range spraying, suitable for dust suppression, firefighting, and large-area irrigation.

Dual-Axle Towing Chassis

Features a thickened, powder-coated carbon steel frame and dual vacuum tires for smooth, shock-absorbing travel. A standard tow hitch ensures compatibility with various towing vehicles; optional braking systems are available. Suitable for both off-road terrain and paved roads.

Comprehensive Plumbing and Valve System

Complete stainless steel piping, diverter valves, and quick-connect fittings. Allows for external hose connections, enabling both wide-area spraying via the fire monitor and targeted washing or irrigation using a handheld spray gun.

Water Trailer Features

1. Highly Mobile, No Site Restrictions

The towable design allows for easy hauling by small vehicles, enabling access to remote work sites, orchards, and rural roads. It solves the problems of insufficient fixed water sources and the inability of large sprinkler trucks to navigate narrow paths.

2. Independent Power, Unrestricted Operation

The diesel unit supplies water autonomously without relying on the towing vehicle's engine, allowing for continuous spraying while parked. It delivers high pressure and high flow rates, achieving long-range direct jets and wide-area mist coverage. 

3. Versatile and Multi-functional

Construction Sites: Dust suppression on earthwork roads, watering construction surfaces, washing muck trucks

Agriculture & Forestry: Irrigation for saplings and landscaping, drought-relief watering for farms, spraying for disinfection/pest control

Safety & Security: Basic firefighting for rural areas, emergency fire suppression for factory sites

Sanitation: Road cleaning, site cooling, disinfection spraying

4. Durable, Easy to Maintain, Low Operating Costs

Rust-free PE water tank; diesel engine parts are widely available and easy to service; simple vehicle structure ensures low failure rates and fuel efficiency, offering excellent long-term value.

5. Safe and Practical Design

Multi-angle adjustable water cannon and simple controls allow for one-person operation

Stable chassis with a dual-wheel design to prevent tipping; drainage valve empties standing water to prevent freeze-cracking in winter

High-pressure resistant all-metal piping prevents bursts; standard quick-fill port ensures efficient water replenishment

6. Customizable to Needs

Customizable options include tank capacity, single/dual-wheel chassis, electric/diesel pumps, mist cannon installation, and body color; Chinese manufacturers can configure units to meet domestic or export engineering standards.

Water Trailer Application Scenarios

Construction & Engineering: Dust control at construction sites and mines, maintenance of earthwork roads

Agriculture, Forestry & Horticulture: Irrigation for orchards, nurseries, and pastures; sapling maintenance

Rural Safety: Basic village firefighting; pre-positioned water storage for forest fire prevention

Sanitation & Property Management: Road cleaning in industrial parks, cooling of open-air areas, disinfection operations

Livestock & Farms: Livestock water supply; site washing and disinfection