Thread: Air drier for compressed airline.

There are many ways to remove water from compressed air and they each have their advantages and disadvantages.
I assume you have seen this thread?
Compressed Air Feedline For Workshop?

If you only have low air flow requirements (ie air brush) a coil or multiple loops of copper with suitably placed drain taps in line with the compressor will condense out most of the water.
You would have to make these yourself.

The cheapest and simplest water removed is a coarse particle filter and moisture trap but they are not very efficient.
Usually they incorporate a pressure reducing valve which can come in handy for things like spray painting
eg https://www.bunnings.com.au/ozito-1-...lator_p6210579
I have one and it's what I would call, an OK pressure regulator but "not very good" at removing water.

A variation on the above for ~$140 is something like this
https://sydneytools.com.au/product/u...ir-line-filter.
The filters are pretty exxy (~$20 etc!) and have to be replaced every so often (but not as often as they say )s o you may want to look at something like this
Phase 3 Air Filter | Amaxi that use ordinary toilet rolls as filters, they cost a bit more but will pay for themselves in time because tower rolls can be had for <$1
These are commonly used for plasma cutters and spray painting which need reasonably dry air to work properly.

The most efficient driers especially for high flow situations are refrigerated and will set you back about $1500 - $2000
EG See https://www.machineryhouse.com.au/Re...ted-Air-Dryers
NB you need to install a fine particle filter on these which also adds a few bob
They can be obtained for much less than this but given the corrosive nature of the water produced by the drying process you might find they don't last very long and they may use more power than the better ones.

If you have even more $$$ to throw at the problem you could get a medical grade drier

You can of course make your own using a fridge and an LPG gas cylinder.
This will take up more room than a dedicated drier
Old fridges in particular will use a lot of power especially f you run them continuously.
If you don't run them continuously the fridge and tank will take some time to fully cool down ie a PITA especially if you need/want to use it NOW.

You can also make up your own water trap from a water purification filter holder. That's what I intend to do once I gain a bit of energy from my latest meds.

thank you BobL, your reply was appreciated. and now I have a lot better understanding of it all and will purchase one of the same type as you put in the Sydney tools link. thank you for your time. regards peter flack toowoomba