Hydraulic Power Units (HPU)
EDDY Pump Hydraulic Power Units deliver stable, high-pressure hydraulic power for dredging, slurry pumping, and cutterhead operations in the most demanding environments. Ranging from 125 HP to 700 HP, each HPU is built with Tier 4 engines, open-loop hydraulic architecture, high-pressure filtration, and integrated safety sensors for flow and pressure protection. With piston pump outputs up to 160 GPM at 5,000 PSI, these units provide consistent, field-ready power for excavator-mounted pumps, dredges, and remote hydraulic systems where uptime and reliability matter most.
Why EDDY Pump’s Hydraulic Power Units Perform Better
- Delivers consistent high-pressure hydraulic output, with piston pump capacities reaching up to 160 GPM at 5,000 PSI, ensuring stable performance for dredging systems, slurry pumps, and cutterheads under continuous load.
- Open-loop hydraulic architecture improves heat management and system predictability while enabling faster, more practical troubleshooting and field servicing.
- Integrated pressure and flow sensors with automatic shutdown protect against overloads, blockages, and hose failures, reducing the risk of catastrophic pump or system damage.
- Tier 4 diesel engines provide the torque required for heavy hydraulic workloads while meeting emissions standards for regulated and government projects.
- Purpose-built hydraulic cooling systems maintain oil temperature during long duty cycles, preserving fluid integrity, seal life, and overall system efficiency.
- Standard 120-foot hydraulic hose bundles with quick-disconnect fittings allow rapid setup between the HPU and excavator-mounted or remote equipment.
- Available in configurations from 125 HP to 700 HP, enabling precise power matching across small diver-operated pumps through large excavator dredging systems.
- Heavy-duty frames, enclosed components, and compact footprints allow reliable operation on barges, shorelines, and remote sites exposed to vibration, moisture, and abrasive conditions.
Gallery
Hydraulic Power Units (HPU) Images
Technical Specifications
Performance Specifications
- Dredge Pump Circuit: Piston pump delivering up to 40–160 GPM at 5,000 PSI
- Cutterhead Circuit: Piston pump up to 25 GPM at 4,500 PSI
- Hydraulic Cooling: Integrated system for continuous-duty operation
- Filtration: High-pressure filtration for system protection
- Operation: Manual or remote, model dependent
Physical Specifications
- Engine: Tier 4 diesel engines from 125 HP to 700 HP
- Fuel Tank Capacity: 120–200 gallons, model dependent
- Hydraulic Oil: Phillips Powerflow NZ
- Dimensions: Up to 13’ x 5’ x 8’ (3.96 m x 1.5 m x 2.43 m), depending on the model
- Weight: Approximately 5,500–19,500 lbs
Connections
- Main Pump Pressure & Return: 1–1½ in quick disconnect
- Case Drain: ¾ in quick disconnect
- Cutterhead Lines: ¾ in pressure and return
Required Equipment
- Compatible EDDY Pump’s dredge pumps or other hydraulic-driven equipment
- Diesel fuel supply suitable for Tier 4 engines
- Stable staging area on land, barge, or platform
Recommended Accessories
- Additional hose assemblies for extended deployment range
- Protective hose reels or spools for transport and hose management
- Auxiliary hydraulic attachments for excavation, cutting, or material handling applications
Hydraulic Power Unit Comparison Table
| Specification | 125 HP HPU | 200 HP HPU | 400 HP HPU | 550 HP HPU | 700 HP HPU |
|---|---|---|---|---|---|
| Engine | Tier 4 – 125 HP | Tier 4 – 200 HP | Tier 4 – 400 HP | Tier 4 – 550 HP | Tier 4 – 700 HP |
| Hydraulic System | Open-loop | Open-loop | Open-loop | Open-loop | Open-loop |
| Pump Circuit (Dredge) | Up to 140 GPM @ 5000 psi | Up to 40 GPM @ 5000 psi | Up to 80 GPM @ 5000 psi | Up to 140 GPM @ 5000 psi | Up to 160 GPM @ 5000 psi |
| Cutter Circuit | N/A | Up to 25 GPM @ 4500 psi | Up to 25 GPM @ 4500 psi | Up to 25 GPM @ 4500 psi | Up to 25 GPM @ 4500 psi |
| Filtration | High-pressure | High-pressure | High-pressure | High-pressure | High-pressure |
| Cooling System | Integrated | Integrated | Integrated | Integrated | Integrated |
| Operation | Manual | Remote | Remote | Remote | Remote |
| Fuel Tank Capacity | 120 gal (454 L) | 120 gal (454 L) | 150 gal (568 L) | 200 gal (757 L) | 120 gal (454 L) |
| Hydraulic Oil | Phillips Powerflow NZ (Eco-Friendly) | Phillips Powerflow NZ (Eco-Friendly) | Phillips Powerflow NZ (Eco-Friendly) | Phillips Powerflow NZ (Eco-Friendly) | Phillips Powerflow NZ (Eco-Friendly) |
| Umbilical Hose | 120 ft (36.58 m) with quick disconnects, ballistic nylon wrap | 120 ft (36.58 m) with quick disconnects, ballistic nylon wrap | 120 ft (36.58 m) with quick disconnects, ballistic nylon wrap | 120 ft (36.58 m) with quick disconnects, ballistic nylon wrap | 120 ft (36.58 m) with quick disconnects, ballistic nylon wrap |
| Dimensions (L x W x H) | 8.0’ x 4.66’ x 6.00’ (2.44 m x 1.42 m x 1.83 m) | 13’ x 5’ x 8’ (3.96 m x 1.5 m x 2.43 m) | 12’ x 5’ x 6’ (3.66 m x 1.5 m x 1.83 m) | 13’ x 5’ x 8’ (3.96 m x 1.5 m x 2.43 m) | 13’ x 5’ x 8’ (3.96 m x 1.5 m x 2.43 m) |
| Weight | 5,500 lbs (2,495 kg) | 9,000 lbs (4,082 kg) | 12,500 lbs (5,670 kg) | 16,000 lbs (7,257 kg) | 19,500 lbs (8,845 kg) |
| Hydraulic Connections | 1” main lines, ¾” case drain | 1½” main lines, ¾” cutter & case drain | 1½” main lines, ¾” cutter & case drain | 1½” main lines, ¾” cutter & case drain | 1½” main lines, ¾” cutter & case drain |
Industries Powered by EDDY Pump’s HPUs
Dredging and Marine Construction
Hydraulic Power Units form the backbone of cutterhead dredges, excavator dredge attachments, and diver-operated systems. They provide stable, high-pressure flow needed to maintain production in rivers, ports, canals, and coastal projects where uptime and flow consistency directly impact output.
Mining and Mineral Processing
In mining environments, HPUs power slurry pumps and hydraulic tools used for tailings management, pit dewatering, and material transport. Their rugged design and integrated protection systems allow reliable operation in abrasive, high-solids conditions.
Municipal Infrastructure
Municipal agencies rely on HPUs for wastewater bypass pumping, sediment removal, and stormwater projects. The Tier 4 engine platforms and controlled hydraulic output make them suitable for regulated environments and long-duration public works.
Environmental Remediation
Sediment removal, lagoon cleanup, and handling of contaminated materials require precise, controlled hydraulic power. HPUs support liner-safe dredging and low-impact pumping systems used in sensitive environmental restoration projects.
Ports and Harbors
Maintenance dredging in ports and shipping channels depends on continuous hydraulic performance. HPUs provide the consistent pressure required to operate cutterheads and high-solids pumps, keeping navigation routes open and compliant.
Construction and Civil Works
Large-scale excavation, trenching, and foundation work often require hydraulic-driven pumps and attachments. HPUs supply portable, high-output power for remote or temporary job sites where grid power is unavailable.
Oil, Gas, and Energy
From refinery maintenance to hydroelectric infrastructure, HPUs support slurry handling, sediment control, and auxiliary hydraulic systems. Their durability and thermal management enable operation in high-load industrial environments.
Industrial Processing and Manufacturing
Facilities that handle abrasive slurries, waste streams, or heavy fluids use HPUs to drive pumps and hydraulic equipment in continuous-duty cycles. These units deliver consistent flow and pressure to ensure process stability and equipment protection.
Case Study
The Problem
A coastal port was left heavily silted after a major tropical storm, blocking its primary navigation channel and forcing an immediate halt to vessel traffic. Bulk carriers and container ships were diverted, creating backlogs across nearby terminals and disrupting regional supply chains. The dredging barge on site had no access to grid power, and mobilizing electric dredging systems or temporary generators would have taken weeks. Each day of inactivity increased demurrage costs, contractual penalties, and economic pressure on port operators and shipping partners.
The Solution
An EDDY Pump Hydraulic Power Unit was rapidly mobilized and paired with an excavator-mounted dredge pump and cutterhead system. The self-contained HPU provided stable, high-pressure hydraulic flow without requiring any external electrical infrastructure. Crews began dredging immediately upon arrival. Integrated pressure and flow protection allowed safe operation in debris-laden material, while the open-loop hydraulic design maintained thermal stability during extended shifts. The system ran continuously on the barge, powering both pumping and cutting operations in a compact, field-ready configuration.
The Result
The navigation channel was reopened in days rather than weeks, restoring vessel access far ahead of initial recovery estimates. Port operations resumed with minimal backlog, and shipping schedules stabilized quickly. The project avoided extended downtime costs, eliminated the need for temporary electrical builds, and proved the value of portable hydraulic power in emergency dredging scenarios. The port authority adopted HPUs as part of its rapid-response strategy for future storm events.
Call for sales or support
If you need assistance with pump selection, sales or engineering support, call 619-404-1916.
Talk To About Any Question?
Frequently Asked Questions about HPU
What is an EDDY Pump Hydraulic Power Unit used for?
An EDDY Pump HPU provides the hydraulic power required to operate dredge pumps, cutterheads, excavator-mounted attachments, and other hydraulic-driven equipment. It serves as a self-contained power source in environments where grid power is unavailable or impractical, such as on barges, at remote job sites, in ports, and on environmental projects.
What equipment can be powered by these HPUs?
These units are designed to run EDDY Pump dredge pumps, excavator dredge attachments, cutterheads, and a wide range of hydraulic tools. They are commonly paired with slurry pumps, liner-safe dredging systems, and auxiliary hydraulic attachments used in dredging, mining, and construction.
How do I choose the correct HPU size for my project?
HPU selection depends on the hydraulic flow and pressure requirements of the pump or attachment being powered. Smaller systems may require only 125–200 HP, while large excavator-dredge setups or high-production pumps may require 400–700 HP. Matching the HPU to the equipment’s duty point ensures stable performance and prevents underpowered operation.
Are these HPUs suitable for continuous-duty operation?
Yes. Each unit is engineered for continuous-duty use with integrated hydraulic cooling, high-pressure filtration, and open-loop system design. This allows them to operate for extended shifts in demanding environments without overheating or performance degradation.
What protection features are built into the system?
EDDY Pump HPUs include pressure and flow sensors with automatic shutdown capability. These systems protect the pump and hydraulic circuits from damage caused by blockages, hose failures, cavitation, or overload, reducing the risk of catastrophic equipment failure.
Can these units operate in regulated or environmentally sensitive areas?
All models are powered by Tier 4 diesel engines, ensuring compliance with emissions standards for municipal, government, and environmentally regulated projects. This allows use in ports, waterways, remediation sites, and urban infrastructure work.
How portable are these Hydraulic Power Units?
Each HPU is skid-mounted, has a compact footprint, and is designed for transport by truck, crane, or barge. Standard 120-foot hose bundles with quick-disconnect fittings enable rapid on-site setup, making them ideal for temporary or mobile operations.
What kind of maintenance do these units require?
Routine maintenance includes engine servicing, hydraulic oil monitoring, filter replacement, and inspection of hoses and connections. The open-loop design simplifies diagnostics and field servicing, allowing technicians to address issues quickly without specialized infrastructure.
Can an HPU run both a pump and a cutterhead simultaneously?
Yes. Models equipped with dual circuits provide dedicated flow for both the dredge pump and cutterhead. This ensures consistent cutting and pumping performance without sacrificing pressure or flow to either function.
Why use an HPU instead of electric or PTO-driven systems?
HPUs eliminate the need for grid power, large generators, or mechanical drive integration. They offer faster deployment, greater flexibility in remote locations, and better control over hydraulic performance. This makes them ideal for dredging and pumping projects where mobility, reliability, and rapid response are critical.
HD (Heavy Duty) Slurry Pumps / Dredge Equipment
Related Products
For assistance Call 619-404-1916 and let us help match your project
with the right pump.