Hydraulic Diver Operated – 4 Inch
Key Features / Advantages
- High Solids Handling – Passes solids up to 3 inches in diameter and maintains slurry concentrations of 40–70%, minimizing downtime from clogging.
- Powerful Production Rates – Moves 75–150 cubic yards of material per hour, ensuring efficient dredging even in dense sludge and sediment conditions.
- Wide Operating Range – Delivers flow rates from 250 to 1,200 GPM with a maximum head of 160 feet, providing flexibility for diverse pumping environments.
- Hydraulic Reliability – Designed to be powered by a hydraulic power unit delivering 35 GPM at 5,000 PSI (80cc motor), ensuring consistent performance under high demand.
- Compact and Heavy-Duty Design – At 1,700 lbs (771 kg), the unit is rugged and stable for underwater operation, optimized for diver use in challenging locations.
- Plug-Free Pipeline Performance – Compatible with Doppler wireless slurry flow meters for stable, uninterrupted flow and maximized production.
- Non-Clog Technology – Outperforms centrifugal and vortex pumps by maintaining production in environments where high-viscosity and abrasive materials are present.
- Versatile Applications – Effective across dredging, mining, lagoon cleaning, and other industrial solids-handling tasks.
Hydraulic Diver Operated – 4 Inch
Technical Specifications
General Specs
- Model: 4-Inch HD 4000 Hydraulic Diver Operated Pump
- Overall Weight (without optional equipment): 1,700 lbs (771 kg)
Operating Parameters
- Flow Capacity: 250 – 1,200 GPM
- Head Range: Up to 160 ft
- Discharge Size: 4 in (100 mm)
- Suction Size: 6 in (150 mm)
- Solids Handling: Up to 3 in (76 mm)
- Slurry Concentration: 40–70% solids by volume
- Production Rate: 75–150 cubic yards of material per hour
Hydraulic Requirements
- Power Source: Hydraulic Power Unit (HPU)
- Hydraulic Flow: 35 GPM
- Operating Pressure: 5,000 PSI
- Hydraulic Motor Size: 80cc
Required Equipment
- Crossover check valve
- Hydraulic hoses
- Hydraulic power unit (35 GPM @ 5,000 PSI)
- 4-inch discharge hose and 4-inch suction hose (material handling grade)
Recommended Sensors
PUMP CURVE
A pump curve shows how the pump performs under different flow and head conditions, helping confirm the correct setup for demanding underwater work. For the 4 Inch Hydraulic Diver Operated Pump, selecting the right curve ensures steady output, efficient movement of high solids material, and reliable performance during diver-controlled dredging where consistent production is critical.
Technical Drawings & Resources
Comparison Table
| Specification | DHP-4000 (4-Inch) | DHP-6000 (6-Inch) |
|---|---|---|
| Model | 4-Inch HD 4000 Hydraulic Diver Operated | 6-Inch HD 6000 Hydraulic Diver Operated |
| Overall Weight | 1,700 lbs (771 kg) | 3,000 lbs (1,360 kg) |
| Flow Capacity (Min–Max) | 250 – 1,200 GPM | 450 – 2,500 GPM |
| Head Range | Up to 160 ft | Up to 200 ft |
| Discharge Size | 4 in (100 mm) | 6 in (150 mm) |
| Suction Size | 6 in (150 mm) | 8 in (200 mm) |
| Solids Handling | Up to 3 in (76 mm) | Up to 5 in (127 mm) |
| Percent Solids | 40–70% | 40–70% |
| Production Rate | 75–150 cubic yards per hour | 150–200 cubic yards per hour |
| Hydraulic Flow Requirement | 35 GPM | 35 GPM |
| Operating Pressure | 5,000 PSI | 5,000 PSI |
| Hydraulic Motor Size | 80cc | 80cc |
| Required Equipment | Crossover check valve, hydraulic hoses, hydraulic power unit, 4" suction/discharge hoses | Crossover check valve, hydraulic hoses, hydraulic power unit, 6" discharge & 5" suction hoses |
| Recommended Sensors | Doppler wireless slurry flow meter | Doppler wireless slurry flow meter |
Industries Served
Mining
Municipal & Industrial Lagoons
Sand & Aggregate
Marine Construction & Ports
Energy & Power Generation
Environmental Remediation
Infrastructure & Flood Control
Case Study
Challenge
A port authority faced persistent sediment buildup beneath dock structures that restricted vessel access and reduced berth depth. Traditional dredging methods using excavators and larger cutterhead dredges were not feasible due to limited clearance and confined spaces under the docks. The project required a solution capable of operating underwater with precision while handling dense, compacted sediment and debris.
Solution
The 4-Inch DHP-4000 Hydraulic Diver Operated Pump was deployed, allowing divers to maneuver the pump directly beneath dock platforms and target critical sediment pockets. Operating at flows up to 1,200 GPM with a maximum head of 160 feet, the pump handled compacted silt and debris without clogging. Its ability to pump slurries with up to 70% solids concentration ensured efficient removal of material while minimizing water intake. A Doppler wireless slurry flow meter was used to maintain stable, plug-free pipeline flow and optimize production.
Result
The dredging operation successfully restored navigable depth around the dock, enabling uninterrupted vessel operations. By eliminating the need for large dredging equipment, the project was completed 25% faster than projected and with significantly reduced mobilization costs. The compact, diver-operated DHP-4000 proved to be a cost-effective, high-precision solution for sediment removal in restricted marine environments.
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Frequently Asked Questions
What is the maximum flow rate of the 4-inch DHP-4000 hydraulic diver-operated pump?
The diver-operated hydraulic pump operates effectively within a flow range of 250 to 1,200 gallons per minute (GPM). This wide capacity allows operators to adjust performance based on the specific dredging environment—whether working in confined lagoons or larger, open marine settings. The pump’s hydraulic drive ensures consistent flow even under demanding conditions where centrifugal pumps typically struggle.
How much material can the 4-inch diver-operated hydraulic pump pump per hour?
Depending on the material density and slurry composition, the DHP-4000 hydraulic diver dredge pump achieves production rates ranging from 75 to 150 cubic yards per hour. This means it can efficiently move large volumes of abrasive sediment, sludge, or slurry, reducing the time required for dredging projects and improving overall operational productivity.
What size solids can the 4-inch diver-operated hydraulic pump handle?
The DHP-4000 hydraulic diver dredge pump is engineered to pass solids up to 3 inches (76 mm) in diameter without clogging. This capability makes it particularly effective in environments with rocks, debris, or highly abrasive particles that would normally jam conventional pumps. The non-clog design is a key advantage of EDDY Pump technology.
What type of hydraulic power unit (HPU) is required?
To operate, the portable diver-operated dredge pump requires a hydraulic power unit capable of delivering 35 GPM at 5,000 PSI using an 80cc motor. This ensures the pump receives sufficient hydraulic power to maintain stable operation. The HPU should also be equipped with a crossover check valve and properly rated hydraulic hoses for safe and reliable performance.
Can the DHP-4000 diver-operated slurry pump work in high solids applications?
Yes. The pump is designed to handle slurries with solids concentrations ranging from 40% to 70% by volume. This makes it ideal for mining tailings, lagoon sludge, and dredging projects where high-density mixtures are common. Its performance in these applications significantly reduces the amount of water required compared to standard pumps.
What hoses are required for operation?
The hydraulic diver dredge pump requires a 4-inch material handling discharge hose and a 4-inch material handling suction hose. Both hoses must be rated for abrasive and high-density slurry transport to ensure durability and maximize the system’s service life during continuous operation.
How is stable pipeline flow maintained?
EDDY Pump recommends using a Doppler wireless slurry flow meter with the 4-inch DHP-4000 hydraulic diver-operated pump. This sensor provides real-time feedback on flow velocity, enabling operators to prevent line plugging, balance material flow, and optimize production rates. This monitoring system is particularly valuable for long-duration dredging projects.
What is the typical weight of the DHP-4000 submersible hydraulic dredge pump?
The 4-inch diver-operated hydraulic pump has an overall weight of 1,700 lbs (771 kg) without optional equipment. Its rugged construction provides stability and durability in underwater conditions, while still being compact enough for diver-assisted maneuverability in confined or difficult-to-access spaces.
In what environments is the DHP-4000 most effective?
The diver-operated hydraulic dredge pump is versatile and performs well across multiple industries, including mining, wastewater treatment lagoons, sand and aggregate recovery, marine construction, and energy sector ash pond cleanouts. Its diver-operated design allows precision dredging in restricted or submerged environments where excavators and larger dredges cannot operate effectively.
How does the DHP-4000 diver dredge pump differ from conventional centrifugal pumps?
Unlike centrifugal and vortex pumps, which quickly lose efficiency or clog in high-viscosity and high-solids applications, the DHP-4000 hydraulic diver dredge pump uses EDDY Pump’s patented non-clog technology. This design enables continuous solids transport with minimal water content, reduces downtime for maintenance, and extends pump life in abrasive environments.
HD (Heavy Duty) Slurry Pumps / Dredge Equipment
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