Isuzu 6×4 Vacuum Sewage Suction Truck – Chengli Heavy-Duty Suction Vehicle
I. Product Introduction
The Isuzu 6×4 vacuum sewage suction truck is a heavy-duty, high-performance vacuum vehicle engineered for the efficient collection, transportation, and discharge of sewage, sludge, and industrial wastewater. Built on a reliable Isuzu 6×4 3-axle chassis (Model QL1251FTFZY) and manufactured by Chengli Group, this vehicle is powered by a 300 HP Isuzu 6HK1-TCG60 engine meeting Euro 6 emission standards.
Featuring a 9.3 m³ carbon steel sewage tank, a 7,500-liter clean water tank, a high-performance vacuum pump (450 m³/h), and a high-pressure plunger pump (22 MPa, 215 L/min), this 20 tons sewage suction truck delivers exceptional performance for municipal sanitation departments, industrial waste management, and sewer cleaning services.

II. Key Specifications
Parameter | Specification |
|---|---|
Model | CLW5250GQW6 |
Brand | Chengli |
Chassis Model | QL1251FTFZY |
Drive Type | 6×4 (3 axles, 10 tires) |
Condition | New |
Wheelbase | 4,650 + 1,350 mm |
Engine Model | Isuzu 6HK1-TCG60 |
Engine Power | 300 HP |
Engine Displacement | 7,790 ml (7.79 L) |
Engine Type | 6-cylinder, water-cooled, turbo-diesel, direct fuel injection |
Emission Standard | Euro 6 |
Fuel Type | Diesel |
Transmission | Manual, RT-11509C |
Clutch | Single plate, dry friction |
Steering | Power steering, left-hand drive |
Brake System | Hydraulic disk brakes (service) + Air brake / hand brake (park) |
Suspension | Semi-elliptical leaf spring with telescopic shock absorber (front & rear) |
Gross Vehicle Weight | 25,000 kg (25 tons) |
Curb Weight | 17,500 kg |
Payload Capacity | 7,500 kg (7.5 tons) |
Sewage Tank Volume | 9.3 m³ (9,300 liters) |
Sewage Tank Material | 6mm high-strength carbon steel (8mm for tank head) |
Clean Water Tank Volume | 7,500 liters (7.5 m³) |
Clean Water Tank Material | 5mm high-strength carbon steel (stainless steel optional) |
Overall Dimensions (L×W×H) | 10,100 × 2,550 × 3,950 mm |
Tires | 295/80R22.5 18PR (10 pcs) |
Cab | 3 persons (including driver), cruise control, ABS, air conditioning, electric windows, adjustable headlights, USB |
After-Sales Service | Online support, video technical support, onsite installation |
Place of Origin | Hubei, China |

III. Vacuum & High-Pressure System
Component | Specification |
|---|---|
Vacuum Pump | China famous brand or Italian imported |
Ultimate Vacuum | -0.093 MPA |
Suction Volume | 450 m³/h |
Working Speed | 460 r/min |
Suction Pipe Length | 8 meters |
Suction Time | 5 minutes |
High-Pressure Pump | High-pressure plunger pump |
Rated Pressure | 22 MPa |
Flow Rate | 215 L/min |
Max Speed | 1,450 r/min |
Manufactured by Chengli Group, this Chengli heavy-duty suction vehicle represents decades of expertise in special-purpose vehicle manufacturing, ensuring reliability and durability for demanding waste management operations.

IV. Hydraulic System
Hydraulic Cylinder: Lifts the entire tanker body
Hydraulic Cylinder: Opens and closes the rear door
Hydraulic Cylinders: Controls suction pipe boom movement (up, down, left, right)
This vacuum sewage truck utilizes a fully integrated hydraulic system for efficient tank lifting and suction pipe control, reducing manual labor and improving operational safety.

V. Safety System
Liquid Level Alarm: Alerts when liquid level exceeds allowable limit
Anti-Overflow Device: 2 units
Limit Valve: 1 unit
The Euro 6 sewage truck meets the most stringent emission standards, making it suitable for markets with strict environmental regulations, including European and Chinese low-emission zones.
VI. Additional Features
Level Inspection Window: 2 units – allows visual inspection of tank interior
Sewage Outlet: 6-inch drain valve on the rear cover
Hand Washing Tank: 1 unit, stainless steel with tap
The Isuzu 6×4 chassis provides exceptional stability and load distribution with its 3-axle, 10-tire configuration, ensuring safe handling even on rough terrain and uneven job sites.

VII. Applications
The sewage suction truck is specifically designed for:
Municipal Sanitation: Sewage and sludge collection from residential areas, commercial districts, and public facilities
Sewer Cleaning: High-pressure water jetting (22 MPa, 215 L/min) for pipe scouring and debris removal
Industrial Waste Management: Collection and transport of liquid waste from factories and industrial sites
Septic Tank Cleaning: Routine pumping and maintenance of commercial and industrial septic systems
Environmental Services: Emergency spill response and environmental remediation
VIII. Isuzu & CLW Group Manufacturer Advantages
Isuzu is a globally renowned manufacturer of heavy-duty diesel engines and commercial vehicle chassis, known for durability and reliability. CLW Group is a leading manufacturer of vacuum sewage suction trucks with decades of industry experience.
Isuzu Engine Reliability: The 6HK1-TCG60 engine is trusted worldwide for longevity and low maintenance
Euro 6 Compliance: Meets the most stringent emission standards
6×4 Heavy-Duty Chassis: 3 axles, 10 tires for exceptional stability and load capacity
Dual-Tank Design: 9.3 m³ sewage tank + 7,500L clean water tank for combined suction and washing
High-Performance Vacuum Pump: 450 m³/h suction volume, -0.093 MPA ultimate vacuum
Powerful High-Pressure Pump: 22 MPa, 215 L/min for effective pipe cleaning
Comprehensive Safety Systems: Liquid level alarm, anti-overflow devices, limit valve
Global Sales and Service Network: Online support, video assistance, onsite installation




