• 200 series
  • 300 series
  • 400 series
  • 500 series
  • 600 series
  • Unibloc® UltraLobe™

  • 200 series

  • 300 series

  • 400 series

  • 500 series

  • 600 series

  • Unibloc® UltraLobe™

Positive Displacement Pumps

Unibloc® Lobe Pumps

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.

Key Features
  • 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

Brochures

Manuals

Performance Curves

Parts Lists

2D Drawings

3D Models (STEP)



Looking to quickly compare the features and benefits of different pump styles, to find the right one for your application? The Unibloc comparison chart is a great place to start.
Hygienic Pump Comparison Chart


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

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.

  • Our pumps feature a fully machined gearbox core that sets industry standards for durability and performance.
  • Precision-machining from a solid billet of 316L stainless-steel provides superior strength compared to cast alternatives, resisting wear from aggressive sanitation and harsh processing conditions.
  • QuickStrip® technology enables efficient preventive maintenance that extends pump life—technicians can inspect and replace wear components quickly, preventing minor issues from becoming major failures.
  • Front-access seal replacement preserves critical tolerances that affect performance and longevity.
  • Our one-way reassembly system prevents installation errors that accelerate wear.
  • 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.

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.

Our lobe pumps feature optimized rotor profiles that minimize pulsation and improve efficiency. QuickStrip® technology dramatically reduces maintenance costs, improving total cost of ownership despite higher initial investment. Features like the patented Safety Swing Arm that enhance worker safety—lowering exposure to injury costs.

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.

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 our product range. Our mid-range PD350 model delivers up to 40 GPM (152 LPM) suitable for a broad range of applications, and our Unibloc® UltraLobe™ 700 Series provides high-volume flow up to 1170 GPM (4429 LPM) for demanding large-scale applications. 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.

Videos



View All Videos

Unibloc Compac™ Flex: Coupled Pump Solutions
Unibloc Pumps – Sanitary PD Pumps
Sanitary PD Pump 600 Series with New Rotor Design
Food Processing QuickStrip Pump How To: Easy Operation in COP Clean-out-of-place Applications
Food Processing QuickStrip COP Overview: Clean-out-of-place Pump Technology
Unibloc Pump Food Grade Truck Pumps
How to Replace Double O-Lip Seals on the Unibloc Pump PD551
Shimming a PD551 Pump
Replacing Diaphragms on a PD551 Pump
Replacing Double O Lip Seals on PD551 Pump
Replacing Single Mechanical Seal in the PD300 – 575 Series Pumps
Daily Maintenance for Unibloc PD500 Series Pumps
Daily Maintenance for Unibloc PD602-677 Series Pumps
Replacing Double Mechanical Seal for PD450 (300-575 Series)

Case Studies



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The Right Pump Gives Fried Foods the Golden Touch

To help food processors meet consumer demands, MP Equipment, Gainesville, GA, provides automated breading and batter coating equipment to the meat, poultry, seafood, and alternative protein processing industry.

Read the Story

Food Fryer OEM Delivers Lower Total Cost of Ownership by Switching to Unibloc® Pumps

Food processors are challenged to find pumps that meet their requirements for hygienic concerns, ease-of-maintenance and high temperatures. Read how this automated frying equipment OEM solved all of those issues.

Read the Story

Tanker Carrier Reduces Downtime by 20% with Unibloc Pumps

Oakley Transport solves seal and pump failure issues with Unibloc pumps - keeping this hauler of liquid food-grade cargo on the road.

Read the Story

Leading Poultry Processor Tackles Challenging Forming Application with Unibloc Pump

The QuickStrip FoodFirst pump increased uptime and reduced potential foreign material issues in an application no other pump could handle.

Read the Story

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CONTACT
CONTACT
+1-770-218-8900
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