Membrane made of EPDM rubber compound for resistance to chemical corrosion and aging.

Tiny slits covering the EPDM surfaces blows up (expand) when air pressure is applied.

Slits or holes in the EPDM membrane are .05 mm in size and therefore provide superior oxygenation. Larger slits create larger bubbles and thus less oxygenation.

Self cleaning with normal air flow. Throttling of the air on and off provides virtually complete self cleaning.

Base made of ABS and now available in BLACK for best concealment.

10 inch diameter with 3/4 inch MPT.

Advantages High oxygen transfer efficiency High resistance to clogging High resistance to corrosion Wide air flow range Low pressure loss Easy installation Water-stirring effect Back flow prevention Self cleaning operation Intermittent operation capability

Applications Fish farm and fish pond aeration Pond Filter System Aeration Lake and Stream Aeration Municipal and industrial wastewater treatment Septic system aeration Clean water treatment Sludge stabilization

DID YOU KNOW- Once you apply air to the diffuser, the EPDM membrane expands (like a balloon). As a result, the diffuser will float to the surface. Yes, you can wedge rocks around the diffuser to try to hold it down, or place rocks on top of the air tubing to try to keep things from floating, but is that what you really want in the bottom of your pond? We can supply a black weighted base that will attach to the diffusers' male threads. It screws right onto the diffuser. Our base includes a barbed fitting that will push into 1/2 inch I.D. tubing.

No need to clutter your pond bottom trying to keep the diffuser from floating and no need to search hardware stores for fittings that fit. You get everything needed. It's a nice neat, clean, professional set up.

Below are some pictures of a diffuser and base combination.

Click here for more images

Air Diffuser with Base Model Diffandbase Price - $88.00

Click here for more images

Weighted Diffuser Base Model wtbase Price - $44.00