Roots Vacuum Pump for Sewage Suction Truck | Shangu-Mingtian Machinery

Shangu RSR & RSRH three-lobe roots vacuum pumps are purpose-built for sewage suction trucks, combined cleaning-suction trucks, sludge tankers and fixed sludge-extraction stations. Widely used in municipal sewer dredging, septic-tank cleaning, sewage transfer and industrial sludge suction scenarios.

Key Concerns for Global Sanitation-Truck Manufacturers & Buyers

Overseas truck OEMs, sanitation contractors and project purchasers focus on these real-world pain-points for truck-mounted vacuum pumps:

1. Anti-shock & vibration resistance: Pumps work under constant vehicle vibration and frequent start-stop impact load. Avoid premature bearing failure and vacuum-degree drifting during field emergency operations.
2. Water-vapor & impurity protection: Intake gas contains water vapor, sludge mist and fine particles from sewage. Require water-gas separation system and waterproof shaft-end seal to prevent lube-oil emulsification and rotor corrosion. Standard indoor-use industrial pumps CANNOT be directly installed on trucks.
3. Vacuum performance margin: Both pumping speed & ultimate vacuum shall reserve 10-15 % performance margin, to offset resistance loss caused by water-gas separator and filter clogging. Many buyers only focus on ultimate vacuum while ignoring pumping speed, leading to slow tank evacuation & low working efficiency.
4. Compact truck-mount layout: Limited installation space on truck chassis. Support multiple mounting orientations, compatible with PTO power take-off, belt drive or direct coupling drive. Control overall weight to match chassis load limit.
5. Heat dissipation performance: Poor heat dissipation inside enclosed truck compartment. High temperature accelerates seal aging and oil deterioration.
6. Special-environment adaptability: Anti-corrosion coating for coastal salt-spray or slightly corrosive sewage vapor.
7. Unified unit & reference condition: Distinguish dry-air nominal pumping-speed vs actual wet-gas pumping-speed for truck working condition, to prevent tender & order mismatch.

Standards Reference

Chinese domestic standards: – JB/T 7674-2017: Roots vacuum pumps – JB/T 6921-2017: Roots vacuum pump units

Note: There is no identical ISO equivalent for JB/T 7674 series. For export truck-OEM acceptance, performance test may refer to ISO 1607-1/2 Positive-displacement vacuum pumps-Measurement of performance as equivalent reference. Warning: JB/T 7674-2017 lab test condition is clean dry air. Real sewage-truck intake carries water vapor & fine impurities. Standard-configuration pumps cannot be adopted directly; water-gas separation, filtration and waterproof sealing must be upgraded.

Unit Conversion Guide (critical for quotation & tender document)

Vacuum / Pressure 
1 atm = 101.325 kPa
1 psi ≈6.895 kPa
1 bar = 100 kPa
1 Torr = 133.32 Pa

Pumping Speed ：1 m³/min = 1000 L/min = 16.67 L/s = 35.31 cfm

Important: Clearly mark difference between dry-air nominal pumping speed and actual wet-gas pumping speed under truck working condition. Reserve 10-15 % performance margin for wet-gas attenuation.

Application & Recommended Models

Application	Typical Working Condition	Recommended Model	Key Configuration Remarks
Small sewage suction truck 2-3 m³ tank	Pumping speed 2-6 m³/min, vacuum -40~-55 kPa, limited mounting space	RSR-50 / RSR-65	Compact unit, water-gas separator, waterproof composite seal, belt drive
Medium cleaning-suction truck 5-8 m³ tank	Pumping speed 6-12 m³/min, vacuum -50~-65 kPa, frequent start-stop	RSR-80 / RSR-100	Labyrinth + nitrile composite seal, vacuum gauge, safety valve, external water-gas separator
Large sewage suction truck 10-15 m³ tank	Pumping speed 12-20 m³/min, vacuum -55~-70 kPa	RSR-125 / RSR-150	Large-capacity water-gas filter assembly, heavy-duty bearing
High-vacuum long-distance sludge conveying	Pumping speed 10-18 m³/min, vacuum -65~-78 kPa	RSRH-150	High-vacuum model, water-cooling preferred, fluorine-rubber seal, large water-gas separator
Fixed sludge-extraction station	Pumping speed 15-35 m³/min, vacuum -50~-70 kPa	RSR-175 / RSR-200	Standard base, complete packaged unit for fixed foundation installation

Tip: Never directly deploy indoor-standard pumps for truck-mount application. For vacuum level above -60 kPa continuous duty, water-cooled structure is preferred. Match PTO rated speed strictly, over-speed operation is forbidden.

Our Advantages

1. National Hi-Tech & Specialized-Sophisticated “Little-Giant” enterprise. Complete in-house CNC machining, dynamic-balance tester and vacuum-performance test-bench. Rotor G2.5 dynamic-balance grade; 20CrMnTi hard-tooth gear. Every pump passes factory vacuum-performance & intermittent-shock test. Test reports available for truck-OEM acceptance.
2. Truck-oriented material & sealing solution: HT250 housing, QT400 ductile-iron rotor. Multiple sealing options: labyrinth, nitrile, fluorine-rubber, mechanical seal. Salt-spray resistant coating optional for coastal sanitation vehicles.
3. Full-scope package supply: water-gas separator, intake filter, vacuum gauge, vacuum safety valve, non-return valve, flexible anti-vibration connector, anchor bolts. Provide truck-mount installation drawing & piping drawing to reduce OEM R-D workload.
4. Flexible mounting & drive options: support multi-orientation installation; compatible with PTO take-off, belt drive, coupling direct-drive. Compact models control overall weight to meet chassis load requirement.
5. Export-oriented support: ISO-1607-referenced performance report, dual-metric-imperial datasheet, English catalog, CE-relevant documentation for overseas sanitation-truck projects.
6. Standardized spare-parts supply, complete O&M manual with truck-specific maintenance schedule to cut field-repair cost.

📩 Inquiry

Please share below information for customized proposal & quotation:
✅ Tank volume
✅ Required pumping speed & vacuum degree
✅ Medium property (water-vapor / impurity / corrosive risk)
✅ Installation space limitation
✅ Drive type (PTO / belt / coupling)
✅ For domestic or export project

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📧 Email: [email protected]
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🌐 Official Website: https://www.mtrootsblower.com