High-pressure water jet cleaning of municipal drainage networks
Pipe Diameter — Pressure — Flow Rate Professional Matching Parameters (For Municipal Use)
1. Scope of Application
2. Matching Principle
- Small pipe diameter: with High pressure, low flow For the purpose of breaking, cutting, and cleaning blockages from pipe walls.
- Large diameter: with High flow rate, medium-to-high pressure For the purpose of ensuring the pipeline’s ability to carry sediment and transport silt.
- Hard scaling and root intrusion: prioritize improvement. Work pressure 。
- Long distance, deep sedimentation: Priority assurance Workload 。
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Municipal Pipeline Grading Parameter Table
DN300–DN400 (Municipal Branch Pipeline Network)
- Work pressure: 150–200 bar
- Work flow: 40–70 L/min
- Applicable to: Municipal community connection pipes, alley branch lines, and general blockages caused by sediment and debris.
DN500–DN800 (municipal trunk pipeline network)
- Work pressure: 220–300 bar
- Work flow: 70–150 L/min
- Applicable to: Main urban sewage/rainwater trunk lines, sand and gravel buildup, root intrusion, and thick-scale deposits.
DN1000 and above (large-scale municipal pipeline networks / box culverts)
- Work pressure: 250–350 bar
- Work flow: 150–300 L/min and above
- Applicable to: large-scale rainwater culverts, main drainage corridors, large-scale dredging operations, and construction waste removal.
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Key Requirements for Municipal Operations
- Stress control
- Old concrete pipes and brittle pipe materials must never be operated under excessive pressure to avoid risks such as pipe damage, joint leakage, and pavement collapse.
- Traffic matching
- Large-diameter municipal pipelines must meet the requirements. Minimum sludge-carrying flow rate Relying solely on high pressure is not enough to achieve effective dredging.
- Powertrain configuration
- For municipal field operations and work in areas without electricity, prioritize the use of... Diesel engine-driven high-pressure pump unit Ensures continuous, stable output and high-torque operation.
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