Non-clogging Static Sludge Mixer

(Non-Plugging / Non-Fouling Very low pressure drop):

The KOMAX Hi-Pass™ Sludge Mixer is designed to effectively mix polymer solution into sludge flows prior to dewatering process. Polymer savings in excess of 25% can be achieved. The basis for the mixer design is a set of right rotation elements followed by a set of left rotation elements set at 90 degrees from each other. This is a non-clogging static sludge mixer design as the municipal sludges contain solid and fibrous materials of sufficient quantities and types to accumulate and cause fouling or plugging conditions in standard mixers. This mixer is capable of handling and mixing municipal sludges with solids content up to 5%, and of passing individual solid items with a nominal major diameter up to 25% that of the mixer. It prevents “stapling” of stringy materials in the flow. The pressure drop is 1/3rd to that of the Triple action mixer.



  • Municipal Water / Waste Water
  • Chemical
  • BioFuel
  • Industrial
  • Oil Sands/Mining
  • Food & Beverage
  • Oil/Gas Petrochemical
  • Pulp & Paper


  • Polymer Mixing
  • secondary Effluent
  • Alum
  • chlorine
  • caustic
  • sludge
  • diluted polymer
  • AQ chemicals
  • AQ Chlorine
  • Ammonia
  • Sodium Hypochlorite
  • Oily sludge
  • polyelectrolyte
  • gas
  • MTF
  • condensate
  • steam
  • sand
  • water
  • polymer solution
  • sodium hydro
  • Hydrated Lime
  • slurry
  • Black Liquor
  • Ozone
  • pulp sludge

End Connections & Available Custom Options

Flanged Ends: Flanged end connections allow for easy mounting of the static mixer into the process pipeline. As a general standard, PVC Hi-pass static mixers have raised face or flat face flanges per ASME B16.5 standards. Komax can also fabricate mixers to contain DIN (metric) flanges as well.

Threaded Ends: Komax Systems offers male and female NPT end connections on static mixers as required.

Plain Ends: For custom configuration Komax Systems offers plain end connections on static mixers.

Injection Port/Quill: An injection port or quill can be added to the static mixer to allow for an additive stream to be injected directly into the static mixer with desired connection type.

*All static mixers are custom made; end connection type can be made per customer request.

Materials & Sizing

Diameter: 1/2″ – 60″

Standard Metals: Stainless Steel 316, Carbon Steel, Killed Carbon Steel, Low Temp Carbon Steel, Ductile Iron

Exotic Metals: Chromalloy, Alloy 20, Monel 400, Super Duplex 2507

Pipe Schedule: Schedule 10-40

Mixing Elements

Non-clogging Mixing Elements – Hi-Pass style

The Komax hi-pass static mixer is specifically designed for high fouling duty or pressure sensitive applications. The most common application is mixing polymer into sludge prior to the dewatering process. The hi-pass mixer has proven excellent mixing with polymer savings of more than 25%.


Hi-Pass Mixer Table:

Line Size Overall Length
L1 (Inch)
4 Hi-pass Elements L2 (Inch)
3″ 16 4
4″ 21 5
6″ 32 6
8″ 40 8
10″ 50 10
*Line Sizes bigger than 10″ are also available upon request
*Available in Carbon steel, Stainless Steel, FRP, PVC, CPVC and alloys etc

Downloadable Information:

non-clogging static mixer