High-Pressure Kobe Pump Systems for Demanding Applications

Kobe pumps are heavy-duty triplex plunger pumps built for high-pressure industrial service, continuous operation, and demanding hydraulic applications. They are commonly used in hydraulic systems, deburring and descaling operations, Morgoil hydrostatic lubrication systems on reduction mills, isostatic compaction
systems, hydro-testing, LN2 aerospace installations, oilfield production systems, and other high-load environments.

Merit Pump supplies, services, repairs, rebuilds, and supports Kobe pump systems. Our experience with Kobe dates back to 1984, and we maintain one of the largest inventories of Kobe pumps, parts, components, assemblies, and reconditioned equipment in the world

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What Are Kobe Pumps?

Kobe pumps are positive displacement triplex plunger pumps designed to generate consistent flow at very high pressures. Unlike centrifugal pumps, which rely on velocity to move fluid, Kobe pumps use a crankshaft-driven plunger design to create pressure through mechanical displacement.

The Kobe pump design dates back to 1937, when Clarence Coberly developed the pump for hydraulic use in California oil well production. Since then, Kobe pumps have been used across industrial, manufacturing, energy, testing, aerospace, and metal processing applications around the world.

Typical Kobe Pump Capabilities

• Pressures up to 30,000 PSI
• Flow rates up to approximately 200 GPM
• Continuous-duty operation in harsh industrial environments
• Compatible with hydraulic oil, water, water-soluble oil mixtures, and specialized fluids
• Suitable for specialized applications including liquid nitrogen (LN2) service

What Makes Kobe Pumps Different?

Kobe pumps are known for their compact, self-contained construction and automotive-style power end design. The pump uses an offset crankshaft, connecting rods, wrist pins, crossheads, outer sleeve assemblies, connectors, clamps, and fluid end plunger pins to drive high-pressure fluid movement.

Many Kobe units are designed with built-in reduction gearing, forced lubrication, spring-loaded balltype valves, and enclosed moving components. This makes the pump compact, serviceable, and well suited for systems where downtime is costly.

Key Kobe Pump Advantages

• Triplex plunger design for smooth, consistent flow
• Heavy-duty construction for high-pressure service
• Compact footprint compared with many high-pressure pump systems
• Internal lubrication support for extended service life
• Serviceable components for repair, rebuild, and maintenance
• Vertical and horizontal mounting options
• Multiple fluid-end configurations for varying pressures, fluids, and duty cycles

Kobe Pump Applications

Kobe pumps are used in industries where pressure, precision, and durability are critical. The largest populations of Kobe pumps are found in metals, isostatic compaction, and testing applications, with additional use across aerospace, oilfield, rubber, automotive, military, ammunition, pipe mill, and general industrial service.

Common Industries Served

• Steel and aluminum processing
• Descaling and deburring systems
• Morgoil hydrostatic lubrication systems
• Isostatic compaction systems
• Hydrostatic and pressure testing
• Oil and gas production
• Aerospace manufacturing and LN2 service
• Mining and heavy industrial hydraulic systems
• Automotive, rubber, ammunition, military, and pipe mill applications

Kobe Pump Sizes, Configuration, and Fluid Ends

Kobe pumps are available in multiple sizes and configurations depending on pressure, flow rate, fluid type, temperature, duty cycle, installation layout, and existing on-site equipment.

Common Kobe Pump Configurations

• Size 2, Size 3, and Size 4 pump classes
• Vertical standard configurations
• Horizontal mounting configurations
• Integral motor drive or separate coupling drive
• Multiple plunger and liner material options
• Fluid end configurations for different operating requirements

Two primary fluid end styles are available, with many variations depending on fluid, working pressure, temperature, duty cycle, and the configuration of other Kobe pumps already in service at the site. Because Kobe pumps have been used across many industries and time periods, the correct configuration depends on the specific application.

Merit Pump can help identify, source, repair, or rebuild Kobe pumps that are currently in service or were used in older systems.

Our Kobe Pump Experience

Merit Pump supports Kobe pumps across their full lifecycle, from selection and sourcing to repair, testing, rebuild, and long-term maintenance support. Our work is based on decades of hands-on experience with Kobe pump systems, not just catalog specifications.

Our founder’s experience with Kobe dates back to 1984, and Merit Pump has become one of the largest and longest-standing stocking distributors of Kobe pumps and components. We support both current and legacy Kobe systems, including pumps used in older industrial applications that may no longer have
straightforward replacement options.

Our Kobe Pump Support Includes

Kobe Pump Testing & Documentation

All repaired, new, and reconditioned Kobe pumps can be pressure tested before shipment using H2O, H2O/soluble oil, or straight hydraulic oil, depending on the customer’s required working pressure and application.

Testing videos can be provided for customer review, including details specific to the pump and test conditions. Customer-witnessed observation may be available by request. Legal or witnessed certification can also be arranged when required for the application.

When to Choose a Kobe Pump

A Kobe pump is often the right choice when your system requires high pressure, continuous operation, compact installation, consistent flow, and long-term serviceability.

Kobe Pumps Are Commonly Selected When:

Frequently Asked Questions About Kobe Pumps

Can Kobe pumps still be repaired and supported?

Yes. Many Kobe pumps have remained in service for decades and can often be repaired, rebuilt, or reconditioned depending on their condition. Merit Pump supports both current and legacy Kobe pump models with repair services, replacement components, technical assistance, and rebuild capabilities.

How long do Kobe pumps typically last?

Kobe pumps are known for long service life when properly maintained. Many units remain in operation for decades in steel mills, testing facilities, aerospace applications, and industrial processing systems. Service life depends on operating pressure, fluid type, duty cycle, maintenance practices, and component wear.

Can older Kobe pumps be identified if model information is missing?

In many cases, yes. Older Kobe pumps may have missing tags, incomplete records, or modified configurations. Physical measurements, component identification, fluid end design, and power end construction can often be used to determine the pump model and recommend replacement parts or repair options.

What fluids can Kobe pumps handle?

Kobe pumps are used with a wide range of fluids depending on the application. Common services include water, water-soluble oil mixtures, hydraulic fluids, and specialized applications such as liquid nitrogen. Fluid compatibility depends on the pump configuration, materials of construction, operating pressure, and temperature requirements.

Are replacement parts available for Kobe pumps?

Yes. Merit Pump maintains an extensive inventory of Kobe pump components, assemblies, and replacement parts. Availability depends on the specific model and configuration, but many wear components and repair items can be sourced from stock or rebuilt from existing equipment.

What is the difference between a Kobe pump and a centrifugal pump?

Kobe pumps are positive displacement triplex plunger pumps designed to generate high pressure with consistent flow. Centrifugal pumps rely on impeller velocity and are generally better suited for higher flow rates at lower pressures. Kobe pumps are often selected when pressure, precision, and continuous-duty performance are more important than volume alone.

Can Kobe pumps be pressure tested before shipment?

Yes. New, repaired, and reconditioned Kobe pumps can be pressure tested using water, water-soluble oil mixtures, or hydraulic oil. Testing documentation and video verification may be available depending on customer requirements.

Need Help With a Kobe Pump?

If you need a Kobe pump, Kobe parts, a replacement assembly, a reconditioned unit, or help troubleshooting an existing system, Merit Pump can help identify the right next step.

Contact Merit Pump for Kobe pump sales, service, repair, parts, and technical support.

Location

Merit Pump and Equipment Company

Physical Address: 975 W Old Lincoln Way, Wooster OH, 44691
Mailing Address: P.O. Box 960, Wooster, OH 44691

Phone: (330) 262-6200
Toll Free Phone: 800-700-8265

Hours

Monday: 8:00am - 5:00pm
Tuesday: 8:00am - 5:00pm
Wednesday: 8:00am - 5:00pm
Thursday: 8:00am - 5:00pm
Friday: 8:00am - 5:00pm

Saturday: Closed
Sunday: Closed