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The 3WPZ-1400 features a water-cooled diesel engine engineered for high power and reliability, paired with a responsive transmission system that offers smooth speed adjustments. Its four-wheel drive and steering configuration ensure superior traction and maneuverability across diverse terrains. The spray boom, constructed from lightweight yet durable aluminum, incorporates hydraulic lifting and folding mechanisms for easy storage and transportation. The split medicine tank utilizes a unique design that enhances stability, while the diaphragm pump delivers consistent pressure for optimal spraying performance. The machine is equipped with pneumatic rubber tires designed to handle rough and muddy conditions, and a drum brake system provides reliable stopping power. The adjustable cab includes ergonomic controls and a balanced layout, ensuring operator comfort and ease of use throughout the workday.
| Project name | Specification parameters | Item name | Specification parameters | ||
| Overall size | Overall dimensions (mm) | 6260*2500*3170 | Powertrain | Engine power (kw/r/min) | 76/2200 |
| Ground clearance (mm) | 920 | Battery capacity | 2*24v 2*45Ah | ||
| Spray length (mm) | 20000 | Engine type: | 100HP- Yunnei cylinder water cooled engine | ||
| Spray rod lift (mm) | 450-1600 | Walking system | Weight of the whole machine (Kg) | 3000 | |
| Wheel base (mm) | 1850/adjustable | Drive | Four-wheel drive | ||
| Wheelbase (mm) | 2500 | Steering | Four-wheel steering | ||
| Cab | Adjustable | Gearbox | Forward gear 3, backward gear 2 with high and low speed transmission | ||
| Spray system | Spray rod position | Front | Brakes | Drum Brake | |
| Spray rod material | Aluminium | Tires | Pneumatic rubber | ||
| Number of spray bodies | 51 | Tire diameter (mm) | 1600 | ||
| Spray rod type | Hydraulic lift | Tire width (mm) | 140 | ||
| Medicine cabinet Volume (L) | 1400 | Turning radius (mm) | 4300 | ||
| Working pressure (Mpa) | 0-2.5 | Drive mode | Four-wheel drive | ||
| Drug pump flow (L/min) | 160 | Walking speed (km/h) | <28km/h | ||
| Medicated liquid stirring | Jet Flow+Back Flow | Work benefit | Application efficiency | 6-10hec/day | |
| Medicine pump construction | Diaphragm pump | Topdressing efficiency | 6-10hec/day | ||
| Medicine pump drive | Hydraulic motor | Fuel consumption (L/h) | 20 | ||
The 3WPZ-1400 is a premium self-propelled sprayer designed to redefine efficiency in agricultural crop protection. As a versatile agricultural sprayer, it integrates robust power, stable performance, and multi-functional capabilities to meet the demands of large-scale farming. Whether tackling disease, pest, or weed control, this boom sprayer excels in diverse field conditions, from wet paddies to open farmlands. Its dual-purpose design combines pesticide spraying and fertilizer spreading, making it an indispensable tool for modern farmers seeking productivity and convenience. Engineered with a focus on durability and user-friendliness, this high-power sprayer stands out as a reliable choice for professional crop care.
Equipped with a rugged engine and advanced four-wheel drive sprayer technology, the 3WPZ-1400 delivers exceptional traction on challenging terrains. The four-wheel steering feature enhances maneuverability, allowing smooth navigation even in confined spaces. This system ensures stable operation in muddy fields, a key advantage over standard agricultural equipment. The rear-mounted engine layout optimizes weight distribution, centering the machine’s gravity for enhanced safety during operation.
At the core of this crop protection equipment is a high-performance spraying system. The hydraulic boom, crafted from durable aluminum, offers flexible lifting and folding capabilities. An automatic balancing device ensures consistent spray coverage across the entire width, while optional fan-shaped or conical spray plates cater to different application needs. The hydraulic boom sprayer design guarantees uniform atomization, critical for effective pest and weed control without wasting pesticides.
The split medicine tank features an innovative sunken structure, creating a low center of gravity that enhances stability during movement. This design not only improves safety but also allows the self-propelled boom sprayer to handle slopes and uneven ground with ease. The tank’s robust construction ensures it can withstand the rigors of daily farming, while its thoughtful placement keeps the machine balanced even when fully loaded.
This multi-functional agricultural sprayer seamlessly transitions from spraying pesticides to spreading granular fertilizers. The rear-mounted centrifugal fertilizer spreader matches the spray width of the boom, reducing crop disturbance and ensuring precise application. This dual functionality eliminates the need for separate equipment, saving farmers time and resources while boosting overall operational efficiency.
Every component of the 3WPZ-1400 is built for longevity, from the heavy-duty tires to the corrosion-resistant spray nozzles. The adjustable cab provides a comfortable working environment, reducing operator fatigue during long hours in the field. Intuitive controls and clear instrumentation make this farm sprayer easy to operate, even for less experienced users.

Ideal for wheat, rice, and other grain crops, the 3WPZ-1400 provides full-cycle disease, pest, and weed control. Its wide spray coverage and uniform atomization ensure every plant receives the necessary protection, from seedling to harvest. The machine’s ability to navigate muddy paddy fields makes it a top choice for rice farmers seeking efficient crop care.
This economic crop sprayer excels in protecting vegetables, shrubs, and other high-value crops. It handles early and mid-stage pesticide application for tall crops with precision, avoiding damage while ensuring thorough coverage. The gentle spray action is suitable for delicate plants, making it versatile across various economic crop types.
Before planting, the 3WPZ-1400 can be used for large-scale soil treatment, targeting weeds and soil-borne pests that threaten crop growth. Its powerful spraying system penetrates the soil surface evenly, creating an optimal environment for seed germination and early seedling development.
With the optional centrifugal fertilizer spreader, the machine becomes a efficient fertilizer spreader for granular fertilizers. It distributes nutrients evenly across fields, supporting healthy crop growth and maximizing yields. The matching spray and spread widths ensure minimal crop disturbance, preserving seedling health during application.

Poor spray performance often stems from clogged filters. Check the nozzle filter screen and the main liquid filter for debris or residue, then clean them thoroughly. Ensuring the filters are free of blockages restores proper flow and atomization, allowing the self-propelled sprayer to operate at peak efficiency.
Unstable movement may result from worn tires or insufficient hydraulic oil. Inspect the tires for signs of wear and replace if necessary. Additionally, check the hydraulic oil level and replenish it to the recommended level, as low oil can affect the steering and drive systems of the four-wheel drive sprayer.
Belt issues typically occur due to severe wear or improper tension. Adjust the belt tension according to the manufacturer’s guidelines, and replace any worn or damaged belts promptly. Regular maintenance of the engine and transmission belts ensures the agricultural sprayer operates smoothly and avoids unexpected downtime.
