Acumen for Accuracy

Precision is everything. Consistency is everything else.

Zenith precision-gear metering pumps provide accurate‚ reliable‚ pulse-free metering performance over a wide range of process applications and fluid conditions.

When it comes to the high expectations for metering pump systems, Zenith delivers with accurate, reliable and pulse-free performance. Serving the food and beverage, nutraceutical and personal-care markets, we strive to deliver the greatest value at the lowest total cost of ownership with every solution.

Since 1926, the Zenith Pump brand has offered engineers pulse free precise flow with low NPSH (net positive suction head) requirements. These positive displacement pumps utilize an intermeshing gear system that rotates within a housing. As the gears rotate, a void is created drawing the material into the pump. The tight operating tolerances of the gears and available material options for the housing provide significant advantages in fiber, polymer processing, adhesives, paints, food and other markets.

As part of the CIRCOR family of brands, we combine exceptional engineering with a focused attention to your needs—from cost to overall product appeal—attention that’s always backed by an experienced support team.

Precision, with consistency, is everything. That’s why we design and tailor your metering pump systems to any process application, including dosing, filling, injection, coating, coloring, flavoring, extruding, spraying and fiber spinning. We can accommodate fragrance metering, colorants, fillers, antioxidants, surfactants, emulsifiers, preservatives, adhesives and expensive trace ingredients—hot, cold, corrosive, viscous, shear-sensitive, you name it.


Featured Products
Precision Gear Pumps Zenith

MFG in Monroe NC USA

The 9000 series metering pumps are designed to deliver accurate and repeatable flow of metering additives, colorants, hydrogen fuel cell MEA gasketing sealant and adhesive application, or chemicals in a compact and efficient design. 

Materials :

400SS, 316SS, Tool Steel

Max. Pressure [psi] :


Avail. Cap. Range [cc/min] :


Max. Outlet Pressure [PSI] :


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Precision Gear Pumps Zenith

MFG in Monroe, NC USA

For chemical and polymer fluid metering applications.  B-Series pumps have an “outer drive gear” design that allows pumps to be driven by a common pinion gear or multiple pinion gears on a line shaft. 

Avail. Capacities [cc/rev] :

0.16 - 2.92

Max. Flow Rate [GPH] :


Max. Fluid Temperature [°F] :


Max. Viscosity [CP] :


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Precision Gear Pumps Zenith

MFG in Monroe, NC USA

For polymer extrusion applications where product uniformity is critical.  BB PEP Series pumps are specifically designed for medical tubing applications where high precision and ease of disassembly and cleaning are desired. 

Max. Avail. Cap. [cc/rev] :


Max. Flow Rate [lbs/hr] :


Max. Fluid Temperature [°F] :


Max. Disch. Pressure. [PSI] :


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Precision Gear Pumps Zenith

MFG in Monroe, NC USA

For polymer fluid applications at high temperatures, pressures and viscosities as well as for abrasive fluids. 

Avail. Flow Range [cc/min] :


Max. Pressure [psi] :


Max. Fluid Temperature [°F] :


Shaft Seal :

Graphoil Packing Seal or Universal Coupling Seal

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Zenith Applications
zenith drum metering system pumps_649533016-hero-1 x2400

Precision, with consistency, is everything. That’s why we design and tailor your metering pump systems to any process application, including dosing, filling, injection, coating, coloring, flavoring, extruding, spraying and fiber spinning. 

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Adhesives and Sealants mfg image

Solutions for Adhesives and Sealants

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Zenith Pumps for Paints and Coatings

For dependable control of critical coating applications. High accuracy eliminates costly over-application associated with less accurate methods, and the pumps often pay for themselves in savings in one year or less.

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Adhesives-and-Sealaants-feature image 2

Zenith Pump Solutions for Filtration Production

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Zenith Applications
More Pump Solutions

Zenith pumps and systems are used in a range of applications in a variety of markets. Generally, Zenith pumps meter chemical solutions; yet the requirements of each generic metering function can be industry specific. Zenith pumps applications are classified as dosing, filling, injection, coating, extruding, spraying or spinning.

Zenith pumps feature a wide operating flow, pressure and temperature range capable of handling abrasive, corrosive, hot, cold, viscous, toxic and shear sensitive fluids.

  • Minimum – Maximum Flow Rate = 0.16 – 27,000 cc/rev
  • Maximum Viscosity = 1,000,000 cps
  • Maximum Pressure = 4000 psi
  • Maximum Temperature = 900F

A general overview of the applications that we participate in is provided below; however, we encourage you to contact Zenith to discuss your specific requirements.

Application Markets Applicable Pumps
Dosing General Industry/Pharmaceutical General Industry/Chemical
Process General Industry/Pulp and Paper General
Industry/Food and Beverage
B Series
H Series
9000 Series
Fill General Industry/Food and Beverage General
Industry/Chemical Process
B Series
9000 Series
Injection Oil and Gas Power Generation General Industry/Fiber
General Industry/Plastic Extrusion General Industry/Chemical
Process General Industry Pulp and Paper
9000 Series
B Series
H Series
Coating General Industry/Pharmaceutical General Industry/Food and
Beverage General Industry/Chemical Process
9000 Series
B Series
H Series
Extrusion General Industry/Food and Beverage General Industry/Fiber
General Industry/Chemical Process General Industry/Plastic
9000 Series
H Series
Spraying General Industry/Fiber General Industry/Chemical Process
General Industry/Paints
H Series
9000 Series
B Series
Fiber Spinning General Industry/Fiber Spin Finish
Industries Served

CIRCOR delivers customer-focused solutions in strategic global markets‚ where tough challenges‚ harsh environments and high-stakes situations demand precision performance and reliability. To deliver where failure is not an option‚ CIRCOR | ZENITH brings customers a portfolio of pumping products and systems and deep experience and expertise in critical applications.

CIRCOR | Zenith brings the markets of Chemical Process, Pulp and Paper, Fiber, Extrusion, Paints and Wastewater together under a primary Industrial market definition. Many of the applications within this segment are for process support; however, there remains a wide breadth of applications and variance in process conditions. 

Zenith branded pumps have a successful history of supporting engineering and operators within the segments of Industrial market. Known for the reliable, smooth pulse free operation Zenith pumps are typically called on to meter chemicals, plastics, paints or other additives supporting either a specific process operation or final product.

The Zenith pump applications for the Industrial market include:

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Redefining what's possible for your business

Zenith gear pumps from CIRCOR have been the top choice of manufacturers since 1926, and rightly so!

With high metering accuracy, pulse-free flow, and long wear life across various fluid and pressure conditions, Zenith is synonymous with optimal performance and reliability.

Watch the video to learn the markets and applications that Zenith pumps support.



Your best resource for service,
maintenance and quality parts.

No one knows your valves, pumps and systems like the experts at CIRCOR. Our certified OEM parts are engineered to meet or exceed original equipment standards and our service and support teams are equipped with some of the best knowledge in the industry. We have the resources to troubleshoot, analyze and solve even your most complex issues in ways other service options are unable to.

Contact Us

Explore our Success Stories
Zenith Scented Bag Case Study image


A global plastic bag manufacturer and Zenith Pumps roll out a revolutionary new way of making scented plastic bags

Our customer is a global manufacturer of scented plastic garbage bags. Zenith’s precision gear metering pump solution provided a continuous pulse-free process that gave them accuracy and consistency at the low flow rates required. Have a look at our new Zenith scented plastic bags case study at the link below.

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Case Study

Loud and Clear Solution for Automotive Noise and Vibration Product Reduction Manufacturer

Our customer is a leading expert in the global market for automotive noise vibration harshness solutions Their products reduce noise and vibration that come from the engine, drive train and the friction with the road, all of which diffuse to the chassis of the vehicle.

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Zenith Precision Extrusion Gear Pumps for Improved Uniformity and Accuracy

By utilizing a Zenith Precision Extrusion Gear Pump on a medical tubing line, manufacturers can more effectively control the melt delivery to downstream equipment. The pump meters the flow through the die thus achieving a controlled melt quality and reduced melt temperature, ensuring a product that’s reliable, repeatable, and economical. Additional benefits are reducing the back pressure on the extruder to minimize resonance time and stabilize the plasticizing action of the extruder.

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Zenith Dispensing Pumps for Cannabis Market

When requirements for precision flow control arise in emerging industrial markets, Zenith is on the case. In the fast-growing cannabis market, our metering gear pumps can help the process chain get product out of plant material and into a consumable with pumping solutions for extraction and distillation as well as dosing, injecting and spray coating. Have a look at our new From Plant to Product flyer.

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aftermarket parts and service


For our registered customers and partners we provide important technical information, documents and services in our ZENITH Service Portal around the clock.


Contact Zenith





CIRCOR | Zenith
Precision Metering

1710 Airport Rd, Monroe, NC 28110

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