A fully machined gearbox at its core, this lobe pump sets the highest industry standards for performance, providing sanitary solutions for a variety of applications.
- Ultra-hygienic design
- Patented rotor for low product shear
- QuickStrip® design for meticulous cleaning
Unibloc’s lobe positive displacement (PD) pumps set the bar with their dynamic gearbox foundation. These PD pumps offer a solid basis for consistency and precision and provide the broadest selection of sanitary pumping solutions.
Designed for the most rigorous processing and cleaning situations, Unibloc Pump is the leader in 3A sanitary applications.
Patented Rotor Design
- Low-product shear and excellent displacement
- Tight, no-contact tolerances and optional non-galling alloy rotors mitigate the risk of foreign material and wear
QuickStrip® Design
- Engineered to meet FDA’s meticulous daily cleaning requirements
- Tool-free access to pump head and seals
- Available in both Lobe and Gear style pumps
- One-way assembly ensures accuracy and mitigates damage from foreign materials
- Optional front-loaded seal design – access to seals without detaching the pump head
ULTRA-HYGIENIC DESIGN
Our seamless design and porosity-free guarantee exist for every pump we produce for the industry’s cleanest CIP/SIP capable pump. The sleek design eliminates any pinches or gaps that could build up material or conceal hazardous microorganisms. The gearbox has a non-stick exterior for easier cleaning.
SANITARY PUMP APPLICATION SOLUTIONS
- Ideal for high pressure, high-temperature applications, and low shear or abrasive products
- Versatile Seal Mount (VSM) technology allows seals to mount on any pump head with no modifications – simplifying operations with multiple applications
- Offered in an assortment of industry-specific materials and designs
- Rotor material options: stainless steel alloy, Polyflex® plastic metal detectable, and DuraCore® composite designs.
Frequently Asked Questions
What is the life expectancy of a lobe pump?
Lobe pump life expectancy typically ranges from 5 to 12 years, depending on application severity, maintenance quality, and design robustness. Factors affecting longevity include product abrasiveness, operating pressure, temperature extremes, CIP chemical exposure, and maintenance consistency. Unibloc® lobe pumps are engineered to exceed these expectations through our design philosophy and QuickStrip® technology.
- Fully machined gearbox core for durability and performance
- Precision-machined from solid billet of 316L stainless-steel for superior strength
- QuickStrip® technology enables efficient preventive maintenance
- Front-access seal replacement preserves critical tolerances
- One-way reassembly system prevents installation errors
- Fewer parts and simplified design reduce failure points
When properly maintained, Unibloc lobe pumps are proven to deliver extended service life that minimizes total cost of ownership while maintaining the hygienic performance and reliability your operation demands.
What are the limitations of a lobe pump?
Lobe pump limitations include relatively high initial cost compared to centrifugal pumps, lower efficiency with low-viscosity products, pulsating flow that may require dampening, and flow rates and head pressures lower than those of twin-screw pumps. However, Unibloc® Hygienic Technologies engineers have addressed many lobe pump limitations through innovative design.
- Optimized rotor profiles minimize pulsation and improve efficiency
- QuickStrip® technology reduces maintenance costs
- Patented Safety Swing Arm enhances worker safety
When gentle product handling, high pressure and flow with viscous products, self-priming capability, and hygienic design are priorities, Unibloc lobe pumps overcome traditional limitations to deliver superior performance and lower total cost of ownership.
What is the flow rate of a lobe pump?
Lobe pump flow rates vary widely based on rotor size, operating speed, and pressure conditions, with Unibloc® Hygienic Technologies models delivering from 3 to 500 gallons (11 to 19000 liters) per minute across the product range. The mid-range PD350 model delivers up to 40 GPM (152 LPM), and the Unibloc® UltraLobe™ 700 Series provides high-volume flow up to 1170 GPM (4429 LPM). Actual flow rates depend on product viscosity, system pressure, temperature, and pump speed.
Unlike centrifugal pumps that lose efficiency with viscous products, lobe pumps maintain consistent flow across wide viscosity ranges—making them ideal for everything from water-thin beverages to thick sauces and creams.
- Our engineering team can help you select the appropriate lobe pump size and configuration to achieve your target flow rate.
Characteristics / Technical Specifications
- Ultra-hygienic, seamless, porosity-free design
- Non-stick exterior gearbox for easy cleaning
- Patented rotor for low shear and excellent displacement
- QuickStrip® tool-free access for cleaning and maintenance
- Front-loaded seal design (optional)
- Versatile Seal Mount (VSM) technology
- Material options: 316L stainless steel, Polyflex® plastic, DuraCore® composite
- Flow rates: 3–500 GPM (11–19000 LPM), up to 1170 GPM (UltraLobe™ 700 Series)
- Suitable for high pressure, high temperature, low shear, and abrasive products
- Available in Lobe and Gear style pumps
- One-way assembly for error-free reassembly
- 3A sanitary application leader