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Concrete & Masonry - Silica Dust & Slurry Control - Products & Solutions.



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Dust Guards, Saws

Blowers, Dust Socks

Grinders, Respirators, etc.



Silica Dust Extraction
Wet/Dry Models
Slurry & Sludge Extraction

Replacement Filters, Hoses, Cuffs, Separators, etc.



Slurry, Sludge, Flood Reclamation - Relocation, Filtration, Disposal.

Slurry Press Machines

--  Polymers  --
Super Absorbent


Blades, Cup Wheels
Surface Cleaning + Polishing
Coatings & Joint Sealant Removal




 Slice or Scrape
but don't grind ~

Joint Sealant
Coatings Removal
"Without Melting"

Carbide Drill Bits, Chisels, Scrapers Makita Power Tools
Drilling, Demolition, Saws, Dustless Drilling Attachments

Floor Machines --- Dust & Slurry Control
Why Use Larger & Heavier Machines?  Get Off Your Knees! 
Multi-Use Compact Portable Heavy-Duty

Abrasives & Wire Wheels


Slurry DeWatering  >  Portable Slurry Press Machines.  Solid/Liquid Waste Extraction, Compression, Separation, Discharge.


Mudhen Slurry Press ~ Filter / Separation Machines


Concrete Slurry Press, Model 1.0.  Portable wastewater processing station.

Conserve, Recycle Your Concrete or Slurry Waste Water

Instantly Discharging Crystal Clear Water for Reuse or Sent to Drain . . .

Maybe used as a HD Wet Extraction Vacuum to Clean Slurry from Holding Tanks


Small, Compact, Portable, Powerful . . .

	One Step Operation ~ Operates Itself  . . .
Instead of scheduling a maintenance day or weekend to have your slurry tanks drained and cleaned . . .

Consider using a Mudhen on-site at a construction site . . . or while fabricating or manufacturing --- Without interrupting operations.  Actually, you'll:

  • Improve the finished product - the recycled water will be significant cleaner for your processing (if not crystal clear).
    With cleaner and filtered (and recycled) water to use, everything benefits:  Finished product and your processing machines.

  • Reduce man hours and manufacturing and overhead costs - once the tank(s) is cleaned you can leave a Mudhen operate continuously (and self-sufficiently) for continued purification and performance results.


Typical Purification Set-Up - To clean out individual "slurry tanks" (at a construction site, granite or manufacturing plant, etc.):


  • Position the Mudhen in front of the holding tank

  • Used like a heavy-duty wet vacuum cleaner, its intake hose extracts the slurry water and solids

  • The material is pushed through the Mudhen's filter plates

  • The solids fill within the filter plates, the power pneumatic pump continues to extract slurry and compress the solids within the plates to solid cakes

  • On the discharge side, the dirty, gray water uses the filter media (as well as the compressed solids) to produce clean and filtered water

  • The water may then be discharged to a separate holding tank for reuse or disposal.  Or, it can be directed back into the existing tank and used in a continuous loop operation until the "solids" within that tank are completely removed

  • Once the tanks are cleaned, the Mudhen may be positioned and left to operate continuously or intermittently in the "solids" (or the 1st) tank;  thereby improving water clarity while improving (reducing) plant maintenance. 




Fast, Easy, Portable - Mudhen Slurry Press Machines - Air Operated.

	"A Portable Water Treatment Plants on Wheels"


Never has "vacuuming" any type of contaminated slurry waste been faster, easier or more reliable.  Equipped with a 1" x 10' HD intake hose with a 1/4" perforated HD stainless strainer to extract slurry and sludge from any size container.  A standard 3/4" garden hose connection on the output size sends crystal clear water to drain or for reuse.  As the filter plates fill with the solids, the discharge of clean water will eventually stop . . . 


This is your signal that plates need to be emptied . . . Switch the Mudhen to "Dry Mode" for a few minutes to remove the water that may remain in the pump and discharge lines, release the hydraulic ram, then separate the individual filter plates to drop the compacted solid cakes into a tray or standard size wheel barrel that is position beneath the filter plates.




Handles Any Type of Slurry Waste - Including Grease Pits, Earth'n Stone, Concrete Slurry:

  • The thicker the sludge, the cleaner the discharged liquid

  • Thinner slurry provides faster the processing times

  • With thick slurry or heavy sludge, because the solid content is higher you simply have to empty the filter plates more frequently.


Complete Made and Built Here in the USA, including the Hydraulic Pump that will extract the heaviest of slurry from any size pool or vessel.


Whatever your needs - wheel it into an elevator, through a doorway - to your work area.  These machines are used just to extract and clean a dumpster, pit, water tank, etc.  And enable you to re-circulate the extracted / filtered liquid until the container is clean.


Processes Any Type of Solid/Liquid Mixture . . . including Heavy Sludge

Bobcat grinding concrete with 3 grinding heads.

Creating slurry with 3 grinding heads on a Bobcat. 

Clear water discharge from the Clean Water Discharge Hose.

Clear water being discharged from the Clean Water Discharge Outlet.

Heavy slurry sledge . . . easily sucked-in and processed by the H20 Slurry Press machines.

Heavy slurry sludge . . . is easily sucked and processed by the H20 Slurry Press.

Crystal clear water being discharged from the Clean Water Discharge Outlet.

Crystal clear water being discharged from the Clean Water Discharge Outlet.

Volumes of slurry produced by the Bob Cat with 3 grinding heads - Slurry Hydro Press 240 maintains processing times.

Volumes of slurry . . .

The Mudhen Model 1.0 easily kept up to the slurry produced from the BobCat with 3 grinding heads.



Control Panel Information & Operational Pictures

Mudhen 1.0 on the job . . . Extracting slurry from a 20 yard dumpster. Removing a trays of caked solids. Adjusting the PSI from the air compressor.
Recycling Concrete Slurry has Never Been:
Easier . . .
  • Water Shortages, Environmental Concerns, the Rising Cost of Maintaining Waterways & Water Treatment Plants

  • Local, State & Federal Agencies are Actively Involved & Aggressively Enforcing the Discharge of Runoff Waters

  • Traditional Methods of Dumping Slurry in the Ground are Not Acceptable & Dumping into Storm Drains is Illegal

  • Customer Expectations have Risen As Well . . . As We All Have Become More Aware of the Need to Care for Our Planet.


More Economical or with More Ecological Benefits . . .

Transporting, Handling & Storing Drums of Raw Slurry is Costly & Space Consuming . . . Including its Labor Intensity:

  • Waiting for the Raw Slurry to Settle & Separate in the Drums

  • Once Separated:
    > The Semi-Clean Water has to be Removed, Handled & Transported to New Containers . . .
       Or Ph Adjusted before Disposal . . .
    > While the Dry Sludge has to be Shoveled, Handled & Properly Disposed for Recycling . . .

With a Mudhen, the traditional, high maintenance and expensive means of handling slurry waste is eliminated.  Mudhens provide a:

  • Cheaper Means of Hauling the Separated, Clean and Recycled Water . . .

  • Significantly Less Labor is Used . . .

  • The Slurry Solids are Immediately Compressed into Solid Caked Plates for Easy Handling & Disposal . . .

  • Crystal Clear Water is Generated . . . Available Immediately for Re-Use

  • Your Reputation & Environmental Stewardship is Recognized & Enhanced.


Faster or More Reliable . . .

  • Easily Process 55 Gallons of Concrete Slurry within 15 Minutes 

  • Powerful Double Wall Diaphragm Pump Extracts the Thickest of Slurry from Any Size Container or Holding Pond

  • Compresses Suspended & Solid Debris in the Slurry to Solid Caked Plates
    - Conveniently Dispensed into Handy, Removal Trays or a Wheelbarrow . . ..

  • Designed for the Demanding World of Concrete . . . A+ for Earth'n Stone and Grease Pit Waste Applications . . .

  • Mobile, Portable, Compact - Whatever your needs . . . A Mudhen is Specifically Designed to be Portability, Fast Operational, and To Be Used Without a Full Time Operator.



Control and valve side.

Control & Valve Side

Ram in position and hydralic jack set for receiving slurry. Cylinder tilted back, compression plate released for removing individual cake plates. Cake plates accumulating in the 3 removal trays.


Easy to Use . . . Durable . . . Versatile . . .

  • Simple Mechanical Controls, Heavy-Duty Construction - Air Powered which Helps at Eliminating Employee Error, Problems, Maintenance . . .

  • Simple Operation:  A full time operator is typically not required
    - After set-up the machines are designed to run unattended
    - When the filter plates are full, the water discharge of clear water will stop and the "oversize" diaphragm pump will begin to "gulp" for slurry . . .

  • Attach an Industrial grade 5 HP compressor (8 SCFM) is recommended)

  • Connection of the 3 hose lines:  Slurry Input, Clear Water Discharge, and Air Compressor Quick Disconnect

  • 15 Ton Hydraulic Ram is Set at 5000 PSI


Product Made in the USA.Reliable, Built to Last - Made In The USA.

  • Built in the USA from Standard, Easy to Find & Replace Parts

  • Completely Interchangeable Components . . . No Waiting for Service or Parts that Originate from Overseas . . .

  • Complete Unit is Made from Carefully Selected HD Components & Parts . . . To Minimize any Downtime



Product Made in the USA.  Suggested Compressor - The same size compressor is use with all four (4) models.  Specifications:

NOTE:  When selecting a compressor, the continuous start/stop operation of the compressor filling its tank is what damages the pump on a compressor.  The electric compressor, below, includes a dual control switch.  When using the compressor with a Mudhen, set it to continuous operation.  Our recommended gas compressor, below, only operates in continuous mode.  When operated in continuous mode, the compressors' tanks are only filled when needed.

Electric Mudhen Compressor, 110 volt.Electric:  Model:  J113E2-16PDC, 115V, 20 Amp

  • Horsepower:  2.0,   Tank, dual 8 gallon,   CFM:  9.0 @ 80 PSI,   Ship Weight:  200 lbs.,   Dimensions [L x W x H] (in):  44" x 21" x 27"

  • Price:  $1,270.00  



Gas Mudhen Compressor.Gas:  Model:  J103R4-16P, Subaru Gas Motor (shown with Honda Motor)

  • Horsepower:  4.5,   Tank, dual 8 gallon,   CFM:  9.8 @ 80 PSI,   Ship Weight:  195 lbs.,   Dimensions [L x W x H] (in):  44" x 21" x 27"

  • Price:  $1,160.00  



Compressor Operation - To maximize the operation of a Mudhen, including processing time, water clarity, and dry cakes:

  • Start the compressor to draw water from the slurry container @ 10 PSI
    This will pre-coat the cloth material of the filter plates so that the water being discharged is of the best clear quality

  • When the water's clarity is acceptable (after 5 - 10 minutes), increase the compressor's speed (PSI)
    Typical air adjustments are 5 PSI at a time over the coarse of a minute or two

  • Eventually the Mudhen will stall because of backpressure from solids as they continue to accumulate in the filter plates

  • This is your notice to increase air pressure to the Mudhen to 80 PSI maximum




How it Works:  Set-Up, Basic Operation, Filtration Efficiency.

  • Mudhens are very simple and can be operated out of the box with virtually no reference to the instructions, although an easy to use owners manual and DVD is included.

  • Roll or position the Mudhen near the slurry.

  • Turn Operation Controller on the control panel to "off" position.

  • Connect air compressor hose to Mudhen's air fitting.

  • Place the 1" slurry intake hose into the container of slurry that needs processed.

  • Attach output hose and secure the end of the hose that the clear water will flow from (the hose end needs to be tied down, for at times it will buck and spray water.)

  • Adjust the Mudhen's control regulator to a psi of 20.

  • Turn Operation Controller on, the system will begin to pump slurry through the Mudhen.

  • As back pressure builds in the Mudhen and the pump slows, increase the psi by 20 pound increments.  This is done up to 80 psi, but not to exceed 80 psi.

  • The filter screens in the plates will capture the solids and the clean water exits the system through the output hose.  The operator can leave the unit while it is processing slurry.

  • When the Mudhen's pump sounds like it wants to stall or it pumps infrequently (or when the clear water being discharged is minimal or stops), this is your signal that the filter plates on the Mudhen are full.  At this time caked solids need to be dropped . . .


Removing the Caked Solids - Empting the Filter Plates.

  • Remove the slurry line from the sludge and allow the end to hang in the air so the pumps sucks air and pushes it into the filter plates.  This purges any water from the pumping lines while air drying the fines contained within the filter plates.  Allow it to operate this way for a minimum of 5 minutes (the longer it operates this way the drier the cake.  It can operate this way with no damage to any of the components for any length of time.)

  • Turn Operation Controller "off"   >   Turn Operation Controller to "dry"   >   Turn Isolation Valve (in the center of the plumbing) to its "off" position (this will allow more air to travel through the plates for additional drying.)

  • Water will sputter out of the output hose for two minutes.  When only air is being expelled, "open" the Isolation Valve.

  • Turn the Operation Controller "off"   >   Loosen the hydraulic jack pressure relief valve and unscrew in the extension nut on the jack to allow for clearance and to clean the screens on the filter plates.

  • Release the jack cylinder.  Open the filter plates and clean the individual screens with the enclosed scraper.  Avoid sharp objects on the cloth screens.  As you open the filter plates, the caked debris is released and drops into a wheel barrel or tray.  Manually pushed each filter plate back together.  Set the jack cylinder.  Open the air valve and the process automatically repeats as slurry waste begins to pumped through the plates.

  • The typical cycle to empty the filter plates and drop the caked plates, and then the reassembly is less than 10 minutes.  At the end of the day the screens should be rinsed for storage to eliminate any debris or concrete build up.

  • After every 1 to 4 weeks depending on the nature of the slurry, pressure wash the cloth screens to ensure open and clean pores for proper filtering.


Fast, High Productivity - Producing Solid Caked Plates & Crystal Clear Water

Removing the ram on its iron hinge plate to releasing filter chambers.

Hydraulic cylinder is tilted backwards on its hinge plate, filter chambers are released (pulled towards the operator), solid caked plates fall into the collection trays (3). 

Ram and compress-plate set for slurry processing.

Hydraulic cylinder, compression-plate, filter chambers and collection trays (3) ready for slurry processing.

Ram attached to iron "hingle" plate.

Hydraulic cylinder is attached to iron hinge plate.




Pricing - Four (4) Models to Meet Your Needs

You Need a Mudhen When . . .

  • When you are making slurry on a regular basis

  • You are spending at least $300 per month in consumable products in your efforts to deal with slurry:

    Consumables include:
    >  Solidification products such as polymers, chemicals or clay type products
    >  Slurry handling and disposal costs
    >  Pump truck fees
    >  Gas and labor of driving drums of slurry around town, etc.
    >  Valve for insurance costs, being green, good will:

    Insurance Costs.  Is defined as part of the cost in investing in equipment that limits your long term liability as a business owner and shields you and your firm from fines, penalties and work stop order.
    Being Green.  Includes the extra business from those customers who appreciate hiring a firm that invests green technology.
    Good Will.  Most business owners place some valve in their efforts to help their fellow man and the environment.

  • In most cases, a businesses wants a payback on equipment investment within 36 months
    If a Mudhen 1.0 is $17,500 with shipping, that's about $500 per month that needs to be justified
    ~ See Fun Story . . .

Fun Story at the World of Concrete Show, 2014:

  • An employee for a concrete company stops by our booth at the show

  • His boss is complaining about spending $300 per day per crew per job site on slurry removal cost

  • When he hears the monthly costs to own is under $500 he instantly calls his boss . . .

  • They figured:

    "We work 5 days a week and average $300 per day per crew in slurry costs".
    "At 20 working days per month @ $300 per day, that's $6,000 per month in slurry cost."

    "The machine is $17,500.00 (including shipping), divided by $6,000.00 ~ means we'll pay for one machine in 3 months."
    "I'll take one now and if it all works out I'll order one for each crew next month (they have 6 crews) and one for a spare for the unexpected . . ."


 Which Model is Right for You?  How Many Gallons of Slurry do you want to process per hour?

  • Let's use a 55 gallon drum of slurry as our example - 1/2 full of solids

  • The Mudhen "Mini" has 3 filter plates

  • With 3 filter plates and because of the high solid content in the drum of slurry, you'll have to empty the plates (release the cakes) 6 times

  • If that same 55 gallon drum is only a quarter full of solids, slurry processing time increases by 50% ~ 3 releases

  • Summary:  The more filter plates you have in a Mudhen (or the less solids in the slurry), the longer your slurry processing times will be before you have to stop processing to empty, release and clean the filter plates (which takes less than 10 minutes).

  • Basic Rule:  If you are accumulating < 200 Gallons of Slurry a Day, the Mini Mudhen is right for you.



Pricing   -   Descriptions   -   Features   -   Specifications

Every Mudhen is Individual Made.  We do not stock them.
Likewise, a Mudhen can be individually altered . . .
Current Delivery Time is 2 - 3 weeks.


Product Made in the USA.


Mudhen Model 1.0. Mudhen Model 2.0. Mudhen Model 4.0. Mudhen Model Mini.
Volume of Compacted Solids - Cubic Feet - Holding Capacity of the Plates  1.3 cubic feet 2.0 cubic feet 4.0 cubic feet .33 cubic feet
Slurry Processing Rate per Hour 240 gallons
(4 - 6 gallons / minute)
480+ gallons
(8 - 12 gallons / minute)
840+ gallons
(14 - 21 gallons / minute)
60 gallons
(1 - 2 gallon / minute)
Number of Filter Chambers 7 13 23 3
Size of Filter Chambers 16" x 16" x 2-1/4"
Compressor Air Line 3/8" NPI Thread (standard)
Suction Input Line 1" ID
Model Numbers

Model Descriptions


Mudhen Video

Pulse 'n Shake - Self-Cleaning - Filter Video.

Click on the Video Clip - See how it operates.


Mudhen Model 1.0

The MudHen 1.0 is the smallest, most effective portable slurry water recycling system made.  It can fit in an elevator, through a standard 36” door, and on a tommy gate lift.

Over 200 gallons per hour of slurry water can be treated, cleaning takes less than 3 minutes.  Filter slabs are easily disposed of.

Equipped with an Ingersoll Rand air operated 1" pneumatic pump (see below for upgrade to a 1-1/2" pump.)  With 7 filter plates Model 1 requires a minimum of 8 CFM of air.

Model 1.0 produces between 4 and 6 gallons per minute of clear water, holding over 1.0 cubic feet of solids.

Over 50% faster slurry production / processing vs. the Mudhen Mini.

Mudhen Model 2.0

The 2.0 has twice the capacity of the 1.0 which also reduces the cleaning and emptying of the filter plates by 50%.

You can use a standard wheel barrel or other container for removing the sludge slabs.

Equipped with an Ingersoll Rand air operated 1" pneumatic pump (see below for upgrade to a 1-1/2" pump.)  With 13 filter plates, Model 2 requires a minimum of 8 CFM of air.

Produces between 8 and 12 gallons per minute of clear water, holding 2.0 cubic feet of solids.

Mudhen Max

The Slurry King!  - For large scale slurry processing.

Twice the capacity and processing speed of Mudhen Model 2.0.

Equipped with an Ingersoll Rand air operated 1" pneumatic pump (see below for upgrade to a 1-1/2" pump.)  With 23 filter plates, the Max model requires a minimum of 8 CFM of air.

Produces between 14 and 20 gallons per minute of clear water, holding 4.5 cubic feet of solids.

Mudhen Mini

Extremely portable and easy to use, goes anywhere, truly portable . . . Equipped with 10" pneumatic wheels (2) to go wherever a wheelbarrow may go . . . right where you need it.

Attach a portable air compressor and process slurry just as fast as you can make it - giving you nice compacted slabs of waste and clean water for reuse or disposal.

Equipped with the same 1" Ingersoll Rand air operated pneumatic pump.  With 3 filter plates, the Mini model requires a minimum of 5 CFM of air.

Recommendation:  If you process < 200 Gallons of Slurry per Day, the Mini will be acceptable.

Dimensions (L x W x H) 52" x 32" x 48" 64" x 32" x 48" 90" x 32" x 48"  42" x 32" x 48"
Weight 380 lbs. 480 lbs. 720 lbs. 260 lbs.
Ships on: 1 Pallet 1.5 Pallet 1.5 Pallet 1 Pallet
Air Blow Down option for improved cake drying, 6" Lock-In Rubber Casters Yes - Included
Filtration Efficiency

Replacement Filters

Filter & Machine  Maintenance

Filter Screen Efficiency Rating:  Filter screens are rated at 1 - 2 microns nominal.  If you absolutely must have 1 micron efficiency, a $120 Filter is available and it is attached to the "clear water" discharge outlet (with the filter installed, discharge will be 4 - 5 gallons a minute).  The replacement filter media for this filter is $15.00 and it is typically replaced every one to three weeks.

Replacement Filter Screens:  Intermediate cloth, $58.00;  End cloth, $32.00.  Typical replacement is every two years on concrete grinding, drilling and cutting applications.  But they can last only one month if the concrete is allowed to harden on the screens (typically after a week).  Once the concrete has harden in the pores of the screens, slurry water will not be able to pass through . . .

Symptoms of Needing New Filter Screens:  As you are pumping slurry through the machine - up to 80 psi or so - the air pump will stall (which is normal, this also tells you that the filter chambers are full).  But when you open or separate the filter chambers and you see that there is very little caking (debris) inside the chambers - mostly just slurry water.  This means that the pores in the screens are closed and either need cleaned or replaced.  As previously mentioned, they should be expected to be replaced about every two years.

Filter Screen Maintenance:  We tell everyone to thoroughly clean the units at the end of the day including the screens and inside the chambers with a pressure washer - and especially if the unit is going to sit for a week or so.  However, guys have been know to let the units sit for a month with slurry in them and they work just fine.

Mudhen Logo - Slurry Compression / Filtration Machines.

Why Choose a Mudhen?


The MudHen concrete water system is portable and utilizes large casters to easily move the unit around a job site.  The concrete water equipment can be pushed into the jobsite by hand and doesn’t require a forklift.  The press utilizes simple mechanical controls and heavy duty construction to eliminate employee errors and problems.   Concrete water recycling was never so easy!



The concrete water system is built right here in the USA.  All components are parts are interchangeable with standard components that are easily found.  No more waiting for service and parts that originate from outside North America.  The MudHen concrete water system is built to last, and when service is needed - components are carefully selected to minimize the downtime.  The MudHen has the lowest cost of ownership for maintaining.



The MudHen Model 1.0 Concrete De-Watering System comes standard at over 200 gallons per hour of processing capacity and can be easily accessorized with a larger compressor to handle over 500 gallons per hour of capacity.  Model 1.0 will easily outpace most teams of concrete professionals that are sawing and grinding with industrial equipment, while the Mini Model keeps up to a (1) 30" grinder on its initial cuts (which produce higher concentrations of solids).


Model 1.0
Model 2.0
Model Max
Model Mini

Upgrade Mudhen Price --- to 1-1/2" Ingersoll Rand Pneumatic Pump - Uses the compressor's air more efficiently, handles larger pieces of debris, extracts sludge from the bottom of the tank easier.

$500.00 Upgrade, to a 1-1/2" pump complete with 1-1/2" x 10' Intake Hose  
This upgrade is available for the Mudhen Models 1.0, 2.0 or Max.


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Products manufactured and marketed by and for Dust Director® are protected by patents issued or pending in the United States and other countries.  Dust Director® is a registered US patent and trademark owned by Dustless, Inc., an independently owned and operated company;  all pictures, names and logos reserved.

15061 Route 30
N. Huntingdon, PA  15642
Ph:  412.824.6933
Fax:  412.824.4704

E-Mail ICS - With comments, product questions, etc.