Pump Technology

The pump is the heart of the waterjet system, continuously delivering pressurized water to the cutting head.

Get a Test Cut

Pump Technology

The pump is the heart of the waterjet system, continuously delivering pressurized water to the cutting head.

Get a Test Cut

HyPlex Prime

60,000 psi [4,150 bar]


The HyPlex® Prime pump represents the next generation of energy efficient, direct drive ultrahigh-pressure waterjet pumps. The HyPlex's direct drive delivers superior ratio of input energy to the waterjet.

Modular Design

Allows for a wide variety of options such as dual-pressure control. Mounted on its own purpose-built skid for mobility, vibration isolation, and ease of service.

Next Generation Seal Technology

Utilizes the next generation of seal technology from Flow’s 94,000 psi HyperPressure™ pumps.

PAC-V™ Technology

The HyPlex Prime pump uses Flow's exclusive, patented PAC-V technology. The PAC-V pressure control is a unique, highly effective device that greatly simplifies operation of the pump. By automatically adjusting water overflow when the jet turns off or when the operator changes orifice size the complexity of running an ultrahigh-pressure direct drive pump is eliminated.

Water Filtration System

Dual cartridge inlet water filtration to 0.5 micron with inlet and outlet pressure gauges.

Pressure Loading Tool

The HyPlex Prime pressure loading tool allows users to quickly, easily, and accurately perform maintenance on high-pressure components by using a single wrench to tension four (4) tie rods simultaneously.



30 / 50 hp

Orifice Size

0.012" / 0.015"[0.30 mm / 0.38 mm]

Flow Rate

0.84 / 1.34 gal/min[3.2 / 5.1 lpm]

Max Generated Pressure

60,000 psi[4,150 bar]

Max Operating Pressure

55,000 psi[3,800 bar]


Service & Support

We are dedicated to you. The HyPlex pump family is backed by Flow's renown global service network. Technical documentation, phone support, and on-site maintenance contracts are available. See Flow's service section for details.


HyPlex Prime pumps combine HyperJet® technology with direct drive efficiency. The HyPlex Prime is the most reliable ultrahigh-pressure direct drive pump in the world. As the inventors of direct drive technology, Flow provides preventative maintenance interval kits to allow fast and consistent maintenance. Pressure loading tools quickly open the pump to access the replacement components. The same loading tool ensures perfect realignment upon reassembly. This technique is similar to that found on our most advanced 94,000 psi HyperJet pumps. In addition, Flow offers service contracts to eliminate nearly all pump maintenance.

Safety by Design

This pump is designed for safe, reliable, continuous operation at 55,000 psi [3,800 bar] in tough industrial cutting applications.

Flow’s pumps are manufactured in an ASME certified facility. ASME certification ensures Flow follows the strict rules of material traceability, design, manufacture and safety of ultrahigh-pressure containment vessels per ASME code Section VIII, Division 3, and is permitted to apply the U3 stamp to components which apply to the code.

Velocity Matters

Only pressure determines jet velocity. Get technical with a whitepaper and learn how Flow waterjets can cut with the fastest stream velocity in the industry.

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