4 Inch Slurry Pump – Heavy Duty Industrial Solids Handling Solution
HD-4000 (6″ Suction by 4″ Discharge) Close Coupled or Flex Coupled Pump – Heavy Duty Line
The HD 4000 is a 4-inch non-clog slurry pump engineered for high-solids industrial duty where centrifugal pumps fail. It delivers 250 to 1,200 GPM with a head up to 160 ft, handling solids up to 3 inches in diameter at concentrations of 40-70% by weight. With a 6-inch suction, 1800 RPM motor, and abrasion-resistant internals in high-chrome and stainless alloys, it moves sludge, tailings, grit, and sand mixtures without clogging. Built for mining, dredging, and harsh process environments, the HD-4000 prioritizes uptime, wear life, and consistent production in abrasive, high-viscosity applications.
What Sets the HD-4000 Apart
- The HD-4000 is engineered to move solids, not just water. Its non-clog hydraulic design allows debris, rocks, and dense slurry to pass without binding or jamming. This eliminates the frequent shutdowns seen in centrifugal pumps when handling fibrous, abrasive, or oversized material.
- Capable of transporting slurry with 40-70% solids by weight, the HD-4000 is purpose-built for applications where material density is the norm. This enables higher production per cycle, reduced water usage, and faster material removal in dredging, mining, and industrial waste streams.
- With the ability to pass solids up to 3 inches, the pump handles debris that would normally require pre-screening. This simplifies system design and allows direct intake from pits, ponds, sumps, and dredge heads without complex filtration.
- Critical wear components such as the rotor and volute are available in high-chrome 28 percent alloys, stainless steel, and duplex stainless steel. These materials extend service life in sand, tailings, grit, and chemically aggressive slurries, reducing replacement frequency and total cost of ownership.
- Operating from 250 to 1,200 GPM with a head up to 160 feet, the HD-4000 maintains consistent output even as slurry density changes. Unlike centrifugal pumps, which derate sharply in heavy solids, this design maintains flow in real-world solids conditions.
- From the dual mechanical seal with self-contained flushing to the heavy bearing housing and shaft design, every component supports long runtime in harsh environments. The pump is designed for continuous operation in mining, dredging, and process applications where downtime is not an option.
Why EDDY Pump Handles What Others Cannot
The EDDY Pump uses an open-rotor, volute configuration with exceptionally wide internal clearances that allow solids and debris to pass through the pump without clogging. Instead of forcing material through tight gaps like conventional centrifugal pumps, the open rotor generates a swirling “eddy effect” that moves material with less shear and turbulence. On a 4-inch unit, the clearance between the rotor and volute is large enough to let a human arm fit through, and across the 1-inch to 12-inch pump line, those clearances scale from roughly 1 inch up to 12 inches. This generous tolerance enables handling of high volumes of solids, such as rocks, sludge, and rags, without blockages, reducing maintenance and downtime.
Gallery
4-Inch Slurry Pump (HD-4000) In Action
Slurry Pump Technical Specifications
Performance Specifications
- Flow Range: 250 – 1200 GPM
- Head Range: Up to 160 ft
- Solids Handling: Up to 3 inches
- Percent Solids by Weight: Up to 70%
- Production Rate: 75 – 150 yd³/hr
- Motor Speed: 1800 RPM
Physical Specifications
- Discharge Size: 4-inch
- Suction Size: 6-inch
- Pump Orientation: Can be deployed horizontally or vertically
Material Construction
- Rotor: High Chrome 28%, Ductile Iron, Stainless Steel, Duplex Stainless
- Volute Casing: High Chrome 28%, Ductile Iron, Stainless Steel, Duplex Stainless
- Shaft: Chromoly or Stainless Steel
- Mechanical Seal: Dual Tungsten Carbide or Silicon Carbide with self-contained seal flushing system
- Bearing Housing: Ductile Iron or Stainless Steel
EEDY Pump – 4 Inch HD-4000 Heavy Duty Slurry Pump – Pump Curve
PUMP CURVE
The HD-4000 pump curve defines how the pump delivers flow against head across its operating range, based on a 1800 RPM motor. It shows performance from low-flow, high-head conditions through high-volume transfer, up to 1,200 GPM, with a head reaching 160 feet. This curve is critical for matching the pump to real slurry conditions, ensuring the system maintains production when handling dense, abrasive material. Because solids content directly affects performance, the HD-4000 curve serves as a baseline, with custom curves available for specific slurry types and concentrations.
Technical Drawings & Resources
Slurry Pump Models Comparison
| Model | Discharge Size | Suction Size | Flow Range (GPM) | Head Range (ft) | Solids Handling | % Solids by Weight | Production Rate (yd³/hr) | PDF  | PDF  |
|---|---|---|---|---|---|---|---|---|---|
| HD-1000 | 1 inch | 1.5 inch | 1 – 200 | Up to 170 | Up to 0.75 inch | 40–70% | 0–15 | ENG | |
| HD-2000 | 2 inch | 3 inch | 50 – 390 | Up to 90 | Up to 1.75 inches | 40–70% | 15–45 | ENG | ESP |
| HH-2000 | 2 inch | 3 inch | 100 – 600 | Up to 350 | Up to 1.75 inches | 40–70% | 25–60 | ENG | |
| HD-3000 | 3 inch | 4 inch | 100 – 780 | Up to 130 | Up to 2 inches | 40–70% | 45–75 | ENG | ESP |
| HD-4000 | 4 inch | 6 inch | 250 – 1200 | Up to 160 | Up to 3 inches | 40–70% | 75–150 | ENG | ESP |
| HD-5000 (5x5) | 5 inch | 5 inch | 400 – 1800 | Up to 225 | Up to 4 inches | 40–70% | 100–175 | ENG | |
| HD-5000 (5x6) | 5 inch | 6 inch | 400 – 1800 | Up to 225 | Up to 4 inches | 40–70% | 100–175 | ENG | |
| HD-6000 | 6 inch | 8 inch | 450 – 2500 | Up to 200 | Up to 5 inches | 40–70% | 150–200 | ENG | ESP |
| HD-8000 | 8 inch | 10 inch | 1400 – 3600 | Up to 230 | Up to 7 inches | 40–70% | 250–300 | ENG | ESP |
| HD-10000 | 10 inch | 12 inch | 1600 – 5000 | Up to 240 | Up to 9 inches | 40–70% | 300–350 | ENG | ESP |
| HD-12000 | 12 inch | 14 inch | 2600 – 7300 | Up to 180 | Up to 11 inches | 40–70% | 500–600 | ENG | ESP |
Industries Served
Mining and Mineral Processing
The HD-4000 is built for continuous duty in abrasive environments common to mining operations. It handles thick tailings, slurries, and process waste with high solids content, reducing reliance on dilution water while maintaining production flow in pits, sumps, and processing circuits.
Dredging and Sediment Removal
In dredging applications, the HD-4000 moves dense sediment, sand, and debris directly from ponds, canals, and waterways. Its non-clog design supports uninterrupted operation in material-laden environments where centrifugal pumps lose efficiency or fail.
Sand and Aggregate
Aggregate operations rely on the HD-4000 to transfer sand slurries, wash water, and reclaimed fines. The pump maintains output even as material density fluctuates, enabling consistent feed to classifiers, screens, and dewatering systems.
Oil and Gas
From drilling mud to tank cleanout and waste handling, the HD-4000 manages viscous and contaminated fluids without clogging. Its solids-handling capability reduces pre-processing requirements and supports safer, faster fluid movement in field and facility operations.
Chemical Processing
Chemical plants use the HD-4000 for corrosive, particulate-laden fluids, where standard pumps experience rapid wear. Material options in high-chrome and stainless alloys extend service life while maintaining stable flow in aggressive process conditions.
Paper and Pulp
The pump transfers pulp stock, waste streams, and sludge with entrained fibers and debris. Its ability to pass solids prevents buildup and blockage, keeping production lines running with fewer interruptions and lower maintenance demands.
Fly Ash and Coal Ash Handling
Power plants and ash ponds depend on the HD-4000 to move dense ash slurries during excavation, transfer, and remediation. The pump’s abrasion-resistant internals and high solids capacity enable efficient removal in some of the harshest slurry environments.
Municipal and Industrial Waste
For sludge, grit, and mixed waste streams, the HD-4000 delivers reliable performance even in clogging-prone applications. It supports wastewater treatment, industrial cleanup, and material recovery operations by maintaining flow through highly variable and debris-filled media.
Fly Ash Pond Reclamation at a Thermal Power Plant
Case Study
The Problem
A large thermal power plant faced increasing pressure to reclaim and remediate aging fly ash ponds. Over time, the ash had compacted into a dense, abrasive slurry that overwhelmed conventional centrifugal pumps. Impellers eroded rapidly, mechanical seals failed, and clogging became routine. Each failure halted progress, forcing crews to drain lines, replace components, and restart systems. The operation required heavy dilution just to keep material moving, which expanded pond volumes, increased water handling costs, and slowed environmental compliance efforts.
The Solution
The plant replaced its existing units with an EDDY Pump HD-4000 configured for direct pond intake. Built specifically for high-solids slurry, the HD-4000 moved fly ash at high concentrations without pre-screening or dilution. Abrasion-resistant internal components in high-chrome alloys withstood the sharp, fine ash particles, while the non-clog design maintained stable flow even as slurry density varied across excavation zones. The pump was integrated into a continuous transfer system feeding dewatering areas without interruption.
The Result
Reclamation timelines accelerated dramatically. Unplanned downtime dropped by more than 50 percent, and maintenance intervals extended from days to weeks. Water usage decreased, reducing pond expansion and downstream treatment requirements. The plant achieved steady, predictable ash-removal rates, enabling long-term planning rather than reactive maintenance. With the EDDY Pump HD-4000 in place, fly ash reclamation shifted from a high-risk bottleneck to a controlled, repeatable operation aligned with regulatory and environmental objectives.
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Questions? Talk to an Engineer
Frequently Asked Questions
What makes the EDDY Pump HD-4000 different from a centrifugal slurry pump?
The HD-4000 is engineered to move solids first, not just water. Unlike centrifugal pumps that rely on velocity and impeller clearances, the HD-4000 uses a non-clog vortex design that allows dense slurry, debris, and oversized solids to pass without binding. This means it maintains flow in real-world material conditions where centrifugal pumps derate, clog, or fail.
What types of material can the HD-4000 handle?
The HD-4000 is designed for sludge, slurry, sand mixtures, mine tailings, drilling mud, grit, and industrial waste streams. It handles solids up to 3 inches and operates effectively at 40-70% solids by weight. This makes it suitable for applications where material density and debris content are unpredictable.
How does high solids pumping improve productivity?
Pumping higher solids content reduces the need for dilution water. This means more material is moved per hour, fewer passes are required, and downstream processing volumes are reduced. In dredging, mining, and ash handling, this translates to faster project completion, lower energy usage, and smaller settling or dewatering footprints.
Is the HD-4000 suitable for continuous operation?
Yes. The HD-4000 is built for continuous industrial duty. Its heavy shaft, bearing housing, and dual mechanical seal with self-contained flushing are designed for long runtime in abrasive environments. It is commonly used in operations that run for extended shifts or around the clock.
How does the pump perform when slurry density changes?
The HD-4000 maintains stable output even as slurry consistency varies. In applications like dredging or pond reclamation, material density can change hour by hour. Unlike centrifugal pumps that lose efficiency as solids increase, the HD-4000 continues to move material without sudden flow collapse.
What materials are available for wear components?
Critical components such as the rotor and volute are available in high-chrome 28 percent alloys, ductile iron, stainless steel, and duplex stainless steel. These options allow the pump to be matched to abrasive, corrosive, or chemically aggressive environments, extending service life and reducing replacement frequency.
Does the HD-4000 require pre-screening or filtration?
In most applications, no. The pump is designed to handle debris and oversized solids directly. This eliminates the need for complex intake screening systems, reduces clog points, and simplifies overall system design, especially in dredging, mining, and waste handling.
How is the HD-4000 typically deployed?
The HD-4000 can be deployed vertically or horizontally depending on the application. It is used on dredge sleds, floating platforms, barges, sumps, pits, and fixed industrial installations. This flexibility allows it to adapt to both mobile and permanent pumping systems.
What flow and head range does the HD-4000 cover?
The HD-4000 operates from approximately 250 to 1,200 GPM with a head up to 160 feet. This range supports both high-pressure transfer and high-volume material movement, making it suitable for both short, aggressive runs and longer discharge pipelines.
How does the HD-4000 reduce the total cost of ownership?
By eliminating clog-related downtime, reducing dilution water, and extending wear life, the HD-4000 lowers maintenance labor, spare parts consumption, and operational interruptions. Over time, these savings outweigh the initial equipment cost, especially in high-solids environments where conventional pumps struggle to survive.
HD (Heavy Duty) Slurry Pumps / Dredge Equipment
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