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Flooded Suction Slurry Pumps
EDDY Pump flooded suction slurry pumps are installed with the pump inlet below the normal liquid or slurry level so the source gravity-feeds the suction. This positive inlet condition helps maintain a full suction line and is a strong fit for continuous transfer from tanks, hoppers, wet wells, process vessels, sumps, and other systems where the pump can be located below the fluid level.
Best fit: Choose flooded suction when the source can maintain positive pressure at the pump inlet and you want the pump accessible outside the tank or sump.
AT A GLANCE
Flooded Suction Snapshot
The key size, flow, head and solids numbers for flooded suction pumps, plus the installation condition they are built around.
Standard Pump Range
1 in to 12 in
Flow Range
1–7,300 GPM
Head Range
Up to 350 ft
Solids Handling
Up to 11 in
% Solids By Weight
40–70%, application dependent
Installation Condition
Pump inlet maintained below the normal fluid/slurry level with positive static head
What Is a Flooded Suction Pump?
A flooded suction installation places the pump inlet below the liquid or slurry level so material flows to the pump under positive static head. Unlike a suction-lift arrangement, the pump does not need to pull the material upward to reach the inlet. Properly designed flooded suction can improve inlet conditions and reduce cavitation risk, but the available NPSH still depends on fluid level, slurry properties, suction piping, temperature, and operating point.
CHOOSE YOUR SETUP
Alternatives to Flooded Suction
Pick the configuration that fits how your site is laid out and where the pump needs to sit. Each option shows what it is best suited for.
Submersible Electric
Best for dewatering pits, sumps, and wet environments with a flooded intake.
Self-Priming
Best for suction-lift setups and remote sites where the pump sits above the fluid.
Flooded Suction Pumps
Flooded Suction Slurry Pump Specifications
Compare discharge and suction sizes, flow, head and solids handling across the flooded suction platforms. Each platform name links to its product page.
| Pump Platform | Discharge Size | Suction Size | Flow Range (GPM) | Head Range (ft) | Solids Handling | % Solids by Weight | Production Rate (yd³/hr) | Max Pump Speed (RPM) | Spec Sheet |
|---|---|---|---|---|---|---|---|---|---|
| HD-1000 | 1 in | 1.5 in | 1–200 | Up to 170 | Up to 0.75 in | 40–70% | 0–15 | 1,800–3,600 | Download  |
| HD-2000 | 2 in | 3 in | 50–390 | Up to 90 | Up to 1.75 in | 40–70% | 15–45 | 1,800 | Download Download  |
| HH-2000 | 2 in | 3 in | 100–600 | Up to 350 | Up to 1.75 in | 40–70% | 25–60 | 2,250 | Download |
| HD-3000 | 3 in | 4 in | 100–780 | Up to 130 | Up to 2 in | 40–70% | 45–75 | 1,800 | Download Download |
| HD-4000 | 4 in | 6 in | 250–1,200 | Up to 160 | Up to 3 in | 40–70% | 75–150 | 1,800 | Download Download |
| HD-5000 5×5 | 5 in | 5 in | 400–1,800 | Up to 225 | Up to 4 in | 40–70% | 100–175 | 1,800 | Download |
| HD-5000 6×5 | 5 in | 6 in | 400–1,800 | Up to 225 | Up to 4 in | 40–70% | 100–175 | 1,800 | Download |
| HD-6000 | 6 in | 8 in | 450–2,500 | Up to 200 | Up to 5 in | 40–70% | 150–200 | 1,800 | Download Download |
| HD-8000 | 8 in | 10 in | 1,400–3,600 | Up to 230 | Up to 7 in | 40–70% | 250–300 | 1,200 | Download Download |
| HD-10000 | 10 in | 12 in | 1,600–5,000 | Up to 240 | Up to 9 in | 40–70% | 300–350 | 1,200 | Download Download |
| HD-12000 | 12 in | 14 in | 2,600–7,300 | Up to 180 | Up to 11 in | 40–70% | 500–600 | 900 | Download Download |
| HD-16000 | 16 in | 18 in | 10,000–13,000 | Up to 180 | Up to 15 in | 40–70% | 700–1,000 | 700 | Download |
POWER OPTIONS
Driver / Power Package Options
Match each pump platform to its standard wet end construction, electric direct drive motor options and best fit use.
| Pump Platform | Standard Wet-End Construction | Electric Direct-Drive Motor HP Options | Best-Fit Use |
|---|---|---|---|
| HD-1000 | High Chrome | 2.5 HP, 5 HP | Use for fixed, surface-mounted, gravity-fed installations. |
| HD-2000 | High Chrome | 5 HP, 10 HP, 20 HP | Use for fixed, surface-mounted, gravity-fed installations. |
| HH-2000 | High Chrome | 30 HP, 40 HP, 50 HP, 60 HP | Use for fixed, surface-mounted, gravity-fed installations. |
| HD-3000 | High Chrome | 20 HP, 30 HP, 40 HP | Use for fixed, surface-mounted, gravity-fed installations. |
| HD-4000 | High Chrome | 30 HP, 40 HP, 60 HP, 75 HP, 100 HP, 125 HP | Use for fixed, surface-mounted, gravity-fed installations. |
| HD-5000 5×5 | High Chrome | Application dependent — contact EDDY Pump | Use for fixed, surface-mounted, gravity-fed installations. |
| HD-5000 6×5 | High Chrome | Application dependent — contact EDDY Pump | Use for fixed, surface-mounted, gravity-fed installations. |
| HD-6000 | High Chrome | 75 HP, 100 HP, 150 HP, 200 HP, 250 HP | Use for fixed, surface-mounted, gravity-fed installations. |
| HD-8000 | High Chrome | 250 HP, 300 HP, 400 HP, 500 HP | Use for fixed, surface-mounted, gravity-fed installations. |
| HD-10000 | High Chrome | 250 HP, 300 HP, 400 HP, 500 HP | Use for fixed, surface-mounted, gravity-fed installations. |
| HD-12000 | High Chrome | 500 HP, 700 HP, 1,000 HP | Use for fixed, surface-mounted, gravity-fed installations. |
| HD-16000 | High Chrome | 1,000 HP, 1,500 HP, 2,000 HP | Use for fixed, surface-mounted, gravity-fed installations. |
Selection note: Final package selection should be confirmed against the pump curve, duty point, slurry density, total dynamic head, discharge distance, pipe size, solids size, percent solids by weight, viscosity, available power, and duty cycle.
Flooded Suction Pump Advantages
01
Designed as true flooded suction pumps to eliminate suction lift limitations common with dry self-priming pump and dry prime pump setups
02
Flooded-suction pump design delivers stable flow, reduced cavitation risk, and consistent performance in continuous-duty slurry pumps.
03
Available as horizontal flooded suction pump and vertical flooded suction pump configurations to suit fixed plant layouts and space constraints
04
Handles abrasive slurries with high solids concentrations, making these heavy-duty slurry pumps ideal for mining, dredging, and industrial processing
05
Supports both horizontal slurry pump and vertical slurry pump installations for pit, sump, and tank-based flooded suction pump systems
06
Offered in electric slurry pumps and hydraulic slurry pumps to match site power availability and application demands
07
Compatible with variable speed pump operation and automated pump controls for precise flow, head, and energy management
08
Can be supplied as a skid-mounted pump or trailer-mounted slurry pump for semi-portable or permanent industrial use
09
Built using wear-resistant pump materials, including high chrome slurry pump components, cast iron slurry pump housings, and stainless steel slurry pump options
10
Heavy-duty industrial pump construction, with non-clog internals, enables reliable handling of large solids and abrasive media.
11
Engineered for long service life and reduced maintenance compared to conventional industrial flooded suction pumps operating under similar conditions
12
Ideal replacement or upgrade option where dry self-priming pump systems struggle with efficiency, wear, or solids handling limitations
Gallery
Flooded Suction Pumps
TECHNICAL DETAILS
Technical Specifications
Performance, design, sizing and drive details for flooded suction pumps, all in one place.
Download Brochure
Performance and Capacity
- Flow range from 1 GPM up to 7,300 GPM
- Head capability up to 350 ft, depending on the model
- Handles abrasive slurries with 40–70 percent solids by volume
- Solids handling capability from 0.75 inch up to 11 inches
- Production rates from 0–15 yd³/hr up to 500–600 yd³/hr
Pump Design and Configuration
- Industrial flooded suction pump built for continuous slurry service
- Flooded suction slurry pumps are available in horizontal and vertical configurations
- Designed for fixed or mobile flooded suction pump systems in industrial environments
Pump Sizes and Installation
- Discharge sizes from 1 inch to 12 inches
- Suction sizes from 1.5 inches to 14 inches
- Horizontal slurry pump and vertical slurry pump layouts
- Base-mounted, skid-mounted pump, or trailer-mounted slurry pump options
- Designed for flooded intake applications where dry self-priming pump systems are not required
Drive, Controls, and Materials
- Electric slurry pumps and hydraulic slurry pumps are available
- Compatible with variable speed pump operation and automated pump controls
- Wear-resistant pump materials, including high chrome slurry pump alloys
- Cast iron slurry pump and stainless steel slurry pump construction options
- Heavy-duty industrial pump bearings and tungsten carbide or silicon carbide mechanical seals
WHERE THEY FIT
Best-Fit Applications
Flooded suction works best where the pump can sit below the liquid level and the material needs steady, continuous transfer.
Tank & Hopper Transfer
Continuous transfer of abrasive slurry, settled solids, sludge, or process material from vessels that can gravity-feed the pump.
Mining & Tailings
Thickener underflow, tailings transfer, sumps, and process areas where the pump can be installed below the operating liquid level.
Wastewater & Sludge
Wet wells, basins, digesters, and process tanks where a flooded inlet supports continuous high-solids transfer.
Sand, Aggregate & Process Slurry
Plant systems where stable inlet conditions and accessible surface-mounted equipment are important.
Ash & Industrial Residuals
Transfer of fly ash, bottom ash, fines, sediment, or abrasive process waste from gravity-fed sources.
SIDE BY SIDE
Flooded Suction vs. Self-Priming Pump: Which Is Right for Your Application?
The choice between a flooded suction pump and a self-priming pump comes down to site layout, material type, and operational reliability requirements. Both configurations eliminate manual priming under normal conditions — but they do so differently, with different trade-offs for high-solids slurry service.
| Site Condition | Best Starting Point | Why |
|---|---|---|
| Pump can be installed below the normal tank/hopper level | Flooded Suction | Gravity provides positive inlet head while the pump stays accessible. |
| Pump must sit above the source and pull through suction hose | Self-Priming | Vacuum-assisted priming supports suction lift. |
| Pump can be lowered directly into the source | Submersible | Eliminates the suction line and places the pump at the material. |
What to Have Ready Before Requesting a Quote
Material and slurry description
Maximum and typical solids size
% solids by weight
Slurry density / SG and temperature
Normal and minimum fluid level above the pump inlet
Tank/sump/hopper geometry
Suction pipe size, length, valves and fittings
Required flow / production target
Total dynamic head, discharge distance and elevation change
Available electric power and control/VFD requirements
Municipal Wastewater Sludge Handling Improvement
Case Study
How a municipal wastewater treatment plant dealt with persistent clogging and moved to an EDDY Pump flooded suction system.
The Problem
A municipal wastewater treatment plant was experiencing persistent clogging, seal wear, and inconsistent flow during the transfer of thick sludge from flooded sumps to downstream processing units. Conventional pumps could not reliably handle the high solids concentration, resulting in frequent shutdowns, increased maintenance labor, and reduced overall plant efficiency.
The Solution
The plant replaced its existing equipment with an EDDY Pump flooded suction slurry pump designed for continuous sludge handling. Installed in a flooded intake configuration, the pump utilized wear-resistant materials, a non-clog internal design, and automated pump controls. Variable-speed operation allowed operators to adjust performance in response to changing sludge density and flow requirements.
The Result
The upgraded system delivered stable, uninterrupted sludge transfer with significantly fewer blockages and longer seal life. Maintenance intervals were extended, downtime was reduced, and operators gained better control over process flow. The plant improved operational reliability while lowering long-term maintenance and operating costs.
STILL HAVE QUESTIONS? TALK TO US
Frequently Asked Questions
Straight answers on flooded suction pump selection, cavitation, drive options and mounting.
What is a flooded suction pump?
A flooded suction pump is a centrifugal pump installed below the fluid source so liquid flows into the pump inlet under positive pressure rather than being drawn upward. This eliminates priming requirements, prevents cavitation caused by insufficient NPSH, and enables continuous stable flow — making it the preferred configuration for abrasive slurry, mine dewatering, and high-volume industrial transfer applications.
When should I use a flooded suction pump instead of a self-priming pump?
Use a flooded suction pump when handling dense, abrasive slurry at high solids concentration, when continuous uninterrupted flow is required, or when the pump site is below the fluid source level. Self-priming pumps are better suited for portable setups or installations above the fluid level with moderate solids. For mine dewatering, tailings transfer, and abrasive slurry applications, flooded suction is the more reliable choice.
What causes cavitation in a flooded suction pump, and how is it prevented?
Cavitation occurs when the pressure at the pump inlet drops below the fluid's vapor pressure, causing bubbles to form and collapse against the impeller. In flooded suction installations, cavitation is prevented by ensuring the available NPSH (net positive suction head) always exceeds the pump's required NPSH — achieved by maintaining adequate fluid level above the pump, minimizing suction piping losses, and avoiding high fluid velocities at the inlet.
What flow rates and heads does the EDDY flooded suction slurry pump handle?
The EDDY flooded suction slurry pump handles flow rates from 250 GPM to 7,300 GPM and total dynamic heads up to 350 feet across the model range. It moves slurry at 40–70% solids by volume and handles particle sizes up to 11 inches. Contact EDDY engineers with your flow, head, material density, and solids concentration for model-specific sizing.
What materials are used to improve wear resistance?
Wear-resistant pump materials include high-chrome slurry pump components, cast-iron slurry pump housings, stainless steel slurry pump options, and duplex stainless steel for corrosive environments. Material selection depends on abrasion level and fluid chemistry.
Are electric and hydraulic drive options available?
Yes. These industrial flooded suction pumps are available as electric or hydraulic slurry pumps. This allows compatibility with grid power, generators, or hydraulic power units in remote or mobile applications.
Can the pumps be speed-controlled?
The pumps are compatible with variable-speed operation via VFDs or hydraulic flow control. Variable-speed capability improves efficiency, reduces wear, and allows operators to adjust performance in response to changing slurry conditions.
Are mobile mounting options available?
Yes. Pumps can be supplied as a skid-mounted pump for fixed installations or as a trailer-mounted slurry pump for portable or temporary pumping operations. This flexibility supports both permanent and project-based use.
What type of applications are best suited for flooded suction slurry pumps?
These pumps are widely used in mining, dredging, wastewater treatment, power plants, sand and aggregates, chemical processing, and oil and gas. They perform best in applications with a continuous flooded intake and abrasive slurry.
How do these pumps improve reliability and maintenance life?
The flooded suction pump design reduces cavitation risk and suction losses. Combined with non-clog internals, automated pump controls, and heavy-duty industrial pump construction, this results in longer service life, fewer blockages, and lower maintenance requirements.
LET’S PUT YOUR PROJECT IN MOTION
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Tell us what you’re pumping, where it needs to go, and what your
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Equipment selection, project planning, or an existing pump—we’ll help you find the right next step.
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