Medium Pore Silica Air Diffusers

Fitting: 3/16" Barb
Length: 2"


With an air resistance of less than 0.25 psi, these glass bonded diffusers are compatible with economical low pressure applications, such as blowers. These diffusers are machined from a solid block of glass bonded silica. Because dust and dirt particles up to 30 microns in size will pass right through these diffusers, there’s no need for expensive air filters.

They produce a uniform medium/fine bubble and are very resistant to clogging. And when cleaning does become necessary because of a buildup of calcium precipitate or bacteria, an acid bath restores them to like new performance. Smaller pores don’t necessarily produce smaller bubbles. These diffusers are engineered to produce the smallest bubble possible within the constraints of a reasonable service life. In most soft water applications, they won’t need to be cleaned for more than a year. Note that water pH in excess of 9.0 will shorten the diffuser life. Self weighting when used with typical tubing lengths. All fittings are polyethylene unless otherwise stated.


Length CFM
1-1/2" 0.05 - 0.25
2" 0.20
3" 0.35
6" 0.50
9" 0.75
12" 1.00

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