DFAC D3 6x4 Vacuum Sewer Suction Truck – 19 Cubic Meters Capacity
I. Product Introduction
This Dongfeng Special Purpose D3 Rear Tandem Axle Vacuum Sewer Suction Truck is a heavy-duty municipal sanitation vehicle designed for efficient sludge removal, septic tank cleaning, and industrial waste collection. Built on the robust D3 rear tandem axle chassis, this truck combines powerful vacuum suction capabilities with durable construction to handle demanding tasks in urban drainage maintenance, wastewater treatment plants, and environmental cleanup projects. With a generous 18.5 cubic meter tank capacity and a high-performance SK-42 water-circulation vacuum pump, it delivers reliable performance for sanitation departments, waste management contractors, industrial facilities, and environmental service companies seeking a cost-effective vacuum truck for large-scale waste handling operations, liquid waste transport, and hazardous waste cleanup in compliance with safety regulations.
II. Core Specifications
Chassis Model: Dongfeng Special Purpose D3 Rear Tandem Axle Chassis – white cab (color optional to match fleet requirements)
Engine Power: Yuchai 270 HP Diesel Engine – Euro VI emission standard, fuel-efficient and environmentally friendly for green fleet operations
Transmission: Fast 8-Speed Gearbox – smooth shifting for diverse driving conditions including highway transport and off-road job sites
Wheelbase: 4,350 + 1,350 mm – optimized for load distribution, vehicle stability, and maneuverability in urban environments
Frame: Original Factory Double-Layer Reinforced Frame – enhanced structural integrity for heavy loads and durability
Tires: 11.00R20 Steel Cord Radial Tires – maximum load-bearing capacity for heavy-duty applications
Braking System: Air Brake with ABS – superior stopping power and safety features for commercial vehicles
Additional Features: Power steering, clutch booster, air conditioning and heater for operator comfort
Total Tank Capacity: 18.5 Cubic Meters – ideal for extended waste collection without frequent emptying, maximizing productivity
Tank Thickness: 8 mm high-strength carbon steel construction – exceptional durability against corrosive waste
Vacuum Pump: SK-42 Water-Circulation Vacuum Pump – driven by countershaft PTO for dedicated suction power and pump reliability
Pump Features: Reinforced pump base, check valve, four-way valve, new detachable anti-overflow valve on tank top for overflow protection
Discharge System: 600 mm Hydraulic Rear Door with 150 mm Discharge Ball Valve – efficient waste unloading and material handling
Internal Access: Stainless Steel Ladder inside tank for safe maintenance access and tank cleaning
III. Dimensions, Materials & Design Concept
Overall Dimensions: Built on a 4,350 + 1,350 mm wheelbase with a double-layer reinforced frame, the vehicle provides excellent stability for heavy-duty suction operations while maintaining maneuverability in urban environments, construction sites, and industrial zones. The white cab (color customizable) offers a modern, professional appearance suitable for municipal fleets and private contractors.
Tank Dimensions & Configuration: The 18.5-cubic-meter tank features a circular cross-section designed to withstand internal pressure, with 8 mm thick walls and reinforced bulkheads for structural integrity. The tank interior includes a stainless steel ladder for safe access during cleaning and inspection. The tank top is equipped with a new detachable anti-overflow valve to prevent overfilling during suction operations, ensuring environmental protection and workplace safety.
Material: The tank is constructed from 8 mm high-strength carbon steel plate, offering exceptional durability against impact, pressure, and corrosion from abrasive sludge, chemical waste, and harsh materials. All steel components are treated with anti-corrosion coating for extended service life in harsh sanitation environments. The internal ladder is made of stainless steel for corrosion resistance and long-term durability.
Design Concept: The design philosophy centers on "Heavy-Duty Reliability with Operator Safety." Every component, from the double-layer frame to the reinforced pump base and hydraulic rear door, is engineered to withstand rigorous daily use in demanding waste management applications. The detachable anti-overflow valve and check valve enhance operational safety, while the stainless steel ladder facilitates easy maintenance. This truck is built for industrial-scale waste handling where durability, safety, and compliance are paramount.
IV. Detailed Structure & Component Advantages
Engine: Powered by the Yuchai 270 HP diesel engine meeting Euro VI emission standards, this vehicle delivers consistent torque for demanding suction tasks and waste pumping while maintaining excellent fuel economy. The Yuchai powerplant is renowned for its reliability, low emissions, and durability in heavy-duty commercial vehicles, ensuring long-term performance and environmental compliance for fleet operators concerned with operating costs and regulatory requirements.
Transmission: Equipped with a Fast 8-speed gearbox, this truck offers exceptional versatility for diverse driving conditions. The 8-speed transmission provides low-range power for challenging off-road environments, landfill sites, and construction zones, while overdrive gearing enables efficient highway travel between project locations, disposal facilities, and service areas.
Chassis & Axles: The Dongfeng D3 rear tandem axle chassis features a double-layer reinforced frame designed for maximum payload capacity and load distribution. The front axle and tandem rear axles are engineered to handle the 18.5-ton gross vehicle weight with ease, providing vehicle stability during both transit and stationary vacuum extraction operations on uneven terrain at waste treatment plants or industrial facilities.
Frame Strength: The original factory double-layer frame provides exceptional structural integrity, resisting bending and twisting under heavy loads. This reinforced construction ensures long-term durability even when operating on rough surfaces at landfill sites, construction projects, or remote locations, protecting the tank and components from stress and fatigue.
Vacuum Pump System: The SK-42 water-circulation vacuum pump is driven by a countershaft PTO, ensuring dedicated suction power independent of the transmission gear. The pump base is reinforced and thickened to withstand vibration and stress during continuous operation, enhancing pump reliability and extending service life. The system includes:
Check Valve: Precludes backflow of waste materials into the pump, protecting internal components
Four-Way Valve: Enables versatile operation for suction and discharge with easy control
Detachable Anti-Overflow Valve: New design on tank top prevents overfilling, enhancing workplace safety and preventing environmental spills during waste collection
Discharge System: The 600 mm hydraulic rear door allows rapid waste unloading at disposal sites, while the 150 mm discharge ball valve provides controlled discharge for different applications, from liquid waste to thick sludge. The hydraulic mechanism ensures smooth, reliable operation even with viscous materials and solid debris.
Safety & Maintenance Features:
Air Brake System with ABS: Ensures safe stopping under all load conditions for commercial vehicle safety
Power Steering & Clutch Booster: Reduces operator fatigue during long shifts, improving productivity
Air Conditioning & Heater: Provides operator comfort in all weather conditions, from hot summers to cold winters
Stainless Steel Internal Ladder: Allows safe access for tank cleaning, inspection, and maintenance without corrosion concerns
Anti-Overflow Valve: Prevents spills and environmental contamination during suction operations
V. Product Features & CLW Group Advantages
High-Efficiency Vacuum System: The SK-42 water-circulation vacuum pump delivers powerful suction for rapid sludge removal from sewer systems, septic tanks, drainage ditches, and industrial holding tanks. The countershaft PTO drive ensures consistent performance without taxing the main transmission, while the reinforced pump base guarantees long-term pump reliability even with continuous operation in demanding conditions.
Durable Tank Construction: The 8 mm thick carbon steel tank provides superior resistance to punctures and corrosion from harsh waste materials, chemical residues, and abrasive sludge. The double-layer frame and reinforced subframe ensure structural integrity even when handling dense sludge, solid waste, and heavy debris, offering excellent return on investment for equipment buyers.
Operator-Focused Safety Features:
Detachable Anti-Overflow Valve: Prevents overfilling and spills, protecting the environment and operator safety
Check Valve & Four-Way Valve: Ensure safe, controlled operation during suction and discharge cycles
Stainless Steel Internal Ladder: Enables safe entry for maintenance without corrosion concerns, meeting occupational safety standards
Hydraulic Rear Door: Simplifies unloading with remote control capability (optional), reducing manual handling
Convenient Operational Features:
600 mm Hydraulic Rear Door: Rapid unloading of thick waste materials at landfills and treatment facilities
150 mm Discharge Ball Valve: Versatile discharge options for different waste types
Air Conditioning & Heater: Standard in cab for operator comfort during long shifts in all climates
Color Options: Cab color can be customized to match fleet requirements or company branding
CLW Group Advantages: As a premier Chinese special vehicle manufacturer with decades of engineering expertise and ISO 9001 certification, CLW Group offers:
Engineering Excellence: The countershaft PTO design and reinforced pump base are CLW Group-exclusive enhancements, ensuring reliable power take-off and pump longevity that exceeds industry standards
Customization Capabilities: We can modify tank capacity, pump configurations (including alternative vacuum pump models), discharge options, hose lengths, and accessory packages to meet specific municipal requirements, industrial applications, or contractor preferences for specialized waste handling equipment
Quality Manufacturing: Rigorous ISO 9001 quality control governs every stage of fabrication, from 8 mm steel plate welding to hydraulic system testing and pump calibration, ensuring reliable equipment that performs consistently in demanding field conditions
Integrated Supply Chain: Direct sourcing of genuine components – Dongfeng chassis, Yuchai engines, Fast transmissions, and SK vacuum pumps – ensures spare parts availability, competitive pricing, warranty coverage, and responsive after-sales support through our global service network
Global Export Experience: Proven track record of exporting sanitation equipment, vacuum trucks, and waste management vehicles to international markets across Asia, Africa, Middle East, and Latin America, with comprehensive technical documentation, shipping logistics, customs clearance assistance, and responsive customer service for global clients, government tenders, NGO projects, and private fleet operators worldwide
