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LXB-10 Rubber lobe pump for wastewater treatment

Rubber Rotary Lobe Pump is an Industrial Pump designed to transfer viscous, fibrous, abrasive and solid-laden products. Featuring reversible rotary design and rubber lobes, this self-priming pump offers exceptional performance a range of Industrial applications.

Technical Data & Characteristics:
• Delivery rate:  up to 500 m³/h  (2202 gpm)
• Delivery head:  up to 120 m  (394 ft)
• Pressure:  up to 15 bar  (218 psi)
• Viscosities:  up to 100,000 cSt
• Temperature:  up to 130 °C
• pH-value:  4 – 10
• Gases:  up to 95 %
• Solids:  up to 60 % (max. 70 mm)
• Installations:  horizontal, vertical
• Submersibilities:  immersed, submerged
• Depth:  up to 10 m  (33 ft)
• self-priming possible
• ATEX: suitable for ExZones 1 & 2
• API, ISO, EN standard
• hygienic design available
• Drives:  electro, diesel, hydraulic

Advantages of rubber lobe pumps

• Near pulseless, reversible flow
• Gentle product handling & low shear effect on fluid
• Self-Priming to 5m
• Replaceable Wear Plates at front and back of the pump housing in Wear Resistant Steel (400 HB)
• Hardened bushes as standard increase wear resistance & reliability in arduous and abrasive applications
• Bean-shaped lobes facilitate easier and smoother passage of solids
• Short Dry Running Capability thanks to Grease Lubricated Seals
• Seal Leakage Checking System enables quick and easy inspection
• Swan Neck Suction & Discharge Manifolds aide in Priming & and can be fitted with Pressure Gauges for a quick inspection of pump & system conditions. Drain & Vent Ports are also fitted as standard.
• Quick & Easy Lobe Maintenance & Inspection thanks to Front Pull-Out Design – Pump can be left in the pipework, Seals & Transmission system are left untouched.

Application Areas

Typical applications for our Industrial Rubber Rotary Lobe Pump:

• Petrochemical
• Mining and metallurgical industry
• Food processing industry
• Water treatment
• Shipping industry

Viscosity & Rotary speed of pump
The running speed of the pump needs to be selected appropriately according to the viscosity of the medium, the higher the viscosity of the material, the lower the corresponding speed of the pump should be. The appropriate rotary speed will improve the efficiency of the pump, prolong the service life, and otherwise it will lead to pump operation cavitation, vibration and noise.
Viscosity	Suggested speed	Reference medium
1^~100cP	30^~60rpm	Clean water,oil
1000^~10000cP	30^~50rpm	Cooking oil,dish soap
10000^~50000cP	15^~20rpm	Paint, butter
50000^~100000cP	10^~15rpm	Asphalt,dehydrated sludge
>100000cP	5^~10rpm	Glue
Tip: cP is the unit of dynamic viscosity,with lcP=1/100P(poise)=l mpa · s

Solids content & Rotary speed of pump
The running speed of the pump needs to be selected according to the size of the solid rate of the medium, the higher the solid rate of the material, the lower the corresponding speed of the pump should be. The appropriate rotary speed will improve the efficiency of the pump and prolong the service life, on the contrary, it will lead to abnormal wear of the wearing parts of the pump, and the higher the solids content, the higher the cost of maintenance or replacement will be.
Viscosity	Suggested speed	Reference medium
Almost no wear material	30^~50rpm	Clean water,oil
Lightly worn material	30^~40rpm	0rdinary sewage, solid content<3%
Medium wear material	20^~30rpm	Sedimentation tank sludge, solid content
Strong wear material	15^~20rpm	Sandy sludge，sewage
Heavy wear material	10^~15rpm	Lime mud,pulp
Tip:Solid content refers to the percentage of solids in the mixture (material)

The Rubber lobe pump for wastewater treatment is a high-performance positive displacement pump specifically engineered for handling viscous, abrasive, and solid-laden fluids in demanding industrial environments. With its precision-engineered rubber lobes and reversible rotary design, the rubber lobe pump for wastewater treatment ensures gentle fluid transfer, low shear, and near-pulseless flow, making it ideal for sludge, slurry, and sewage applications. The self-priming capability allows for efficient operation even with high solid contents, while the robust construction provides superior wear resistance and long service life under continuous duty conditions.
Built for versatility, the rubber lobe pump for wastewater treatment can handle viscosities up to 100,000 cSt and solid particles up to 70 mm in diameter. It delivers consistent flow rates up to 500 m³/h with discharge pressures reaching 15 bar, suitable for horizontal or vertical installations. Its front pull-out design enables quick maintenance without removing the pump from the pipeline, minimizing downtime. The wear-resistant steel plates and hardened bushes enhance reliability in abrasive applications, while grease-lubricated seals ensure short dry-running capability.
This rubber lobe pump for wastewater treatment is widely applied in sewage treatment plants, industrial effluent systems, and sludge transfer processes. It ensures stable operation, reduced maintenance costs, and energy-efficient performance—making it an essential solution for modern wastewater management systems.

Keywords：Flexible pump | Rotary pump series | Magnetic pump | Screw pump | Gear pump