Industrial Mixers for Wastewater Treatment

Investment Casting Manufacturers Build Custom Mixing Propellers

clean water

Quality Castings in Wisconsin manufactures custom mixers for the water and sewage treatment industries. These play a key role in keeping water clean for drinking, river flow, and the irrigation process. Our propellers and mixers require incredible precision in handling and construction – we’re the best in the USA in producing flawless results.

Our mixers effectively purify water within the necessary stages of the wastewater treatment process:


Our custom cast propellers are specially designed to minimize the amount of damage done to the blade tips by the water.

Sludge Breakdown

Custom-made propellers help to decompose sludge and other solid waste. When the solid waste is removed, the other materials dry out faster. 


R2 Quality Castings manufactures propellers that gather fine particles of debris and lump them together for easy removal.

Wastewater treatment plants experience several benefits from using our custom mixing propellers. From detailed concept sketching to perfecting the finished product, Wisconsin’s Quality Castings is the only company you’ll ever need for custom-manufactured mixers and propellers. Tight tolerances and complex elements are no match for our investment casting foundry.


Marine Life & Boat Propeller Manufacturers

Quality Castings crafts boat propellers for efficient maneuverability and speed. A well-manufactured boat propeller isn’t something that can be cranked out on an assembly line. Every propeller component is custom-made, down to the finest detail.

There are three types of popular marine propellers - classified by the number of blades attached to the center of the hub: 


  • Excels at high-speeds
  • Difficult handling at low-speeds
  • Efficient acceleration 
  • Can be crafted from aluminum alloy & other metals 
  • Costs less to manufacture


  • High in durability & strength
  • Excellent low-speed handling
  • Higher in manufacturing costs
  • Can be casted with stainless steel alloys & other metals


  • Extremely durable & efficient
  • Minimal vibration
  • Highest in manufacturing costs, compared to 3- & 4-blade
  • Operates better in rough waters

Aside from wastewater treatment, Quality Castings produces mixers for food prep, boating, and more.

Contact our wastewater treatment mixer manufacturers at R2 Quality Castings now!