Gallery, Projects and General > Project Logs
Making a Desiccant Air Dryer with Silica Gel
russ57:
Just a minor warning... I had a similar water filter split. I have no idea why, and I had bought it second hand so it may well have been damaged a earlier. Fortunately, it split a day after we returned from holidays and wife heard the bang and the water running.
If yours was to fail, the result might be more spectacular. It might be worth considering a protective shield of some sort?
-russ
SwarfnStuff:
Oh dear! Russ, you just reminded me of the time when our filter popped an 'O' ring. Unfortunately we were actually on holidays not just arrived home like you. Couldn't get the back door open so went to the front. Stepped inside and found myself in 1/2" of water.
Thankfully the insurance covered new floor coverings. I then moved the filter outside. Ain't hind sight a wonderful thing.
Still, here we are discussing compressed air so no risk of flooding, just a (shielded) bang? I cannot recall whether the specs for the water filter were discussed.
John B
awemawson:
Mine's rated at 160 psi but only supplied with air regulated to 100 psi so should have a bit of safety margin. However it is a sensible warning, having had a 25 mm 'stop end' blow off I'm aware of the power stored in compressed air.
In the case of my main desiccant drier, it is housed in an unmanned Portakabin, so there should be no risk to life and limb.
In the case of the one on my CNC Plasma Table, it is more exposed, but the input air is regulated down to 70 psi, so a higher safety margin.
russ57:
That's good. Still, a vessel giving way at 70 psi would possibly not go unnoticed 😨
-russ
Ed ke6bnl:
I made one years ago from a receiver for a large air cond. system. had screens in there and probably safe for excess of 300 psi. has a top that is removable with several screws. NOT CLEAR and it is out side on my car lift. I have never changed or reheated the silcone bead. sits for long period in the hot sun and seem to be ready all the time.
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