Kasco® Robust-Aire™ RA4 are highly efficient, reliable, and durable aeration systems that induce oxygen transfer, beneficial water movement, and mixing to ponds up to 8 Acres, 8- to 50-feet deep, depending on the shape. 

Base Mount Cabinet
The cabinet should be mounted on the ground with access to ventilation from below. The powder-coated aluminum cabinet includes a cooling fan that provides 110 CFM ventilation, acoustical foam, key lock, and 120-V receptacle or a 240-V junction box.  Dimensions are 24" x 18" x 20" H. Base Mount Cabinets ship motor freight only. 

• Two 1/4 hp single-piston Teich-Aire™ compressors 
• Four diffuser assemblies
• Two dual-port aluminum manifolds with valves
• Quiet operation; 70dB without a cabinet (air conditioner), 65 with cabinet (normal conversation)
• No electricity in the water
• No equipment floating on or near the surface
• Designed and built for continuous operation
• Low maintenance rocking-piston compressor
• Compressor Cabinet can be remotely installed 

Technical Specifications 

Robust-Aire Diffusers Assembly is designed to provide a fine air bubble with the least amount of pressure. They are self-weighted with a stainless-steel base that lands upright every time. 

Safety Tested; compressor ETL listed to UL and CSA Standards

Backed by a 3-year warranty for the compressor, 2 years for piston cups and gaskets, and a lifetime for the cabinet and diffusers. 

If you want industry-leading efficiency and effectiveness in your diffused aeration system, Kasco has the solutions you need!

Benefits of Robust-Aire™

• Easy to install, use, and maintain
• Creates open water to prevent ice damage to docks and boats
• Can be installed distant from power
• Eliminates thermal and chemical stratification
• Increases oxidation at the bottom to speed up organic decomposition
• Expands fish habitat

Product Manual 

Robust Aire Aeration Manual

Video