refillable compressed air container/can

I was talking to a computer repair man a while back & he uses cans he gets from somewhere that are specifically meant for cleaning computers. He reckons it cost $15 worth of cans to clean a computer.
Please don't fly off the handle if he got that wrong.

Anyway I suggested he get a compressor & he said the pressure was not high enough.
So I suggested a divers air tank. They have a huge pressure.
He gave a positive response to that & said he would look into the economics of it.

I guess you need dry air for cleaning electronics.

Good luck with it
Fatso

Those $12 mattress inflators pump out a fast stream of air with the small nozzle attached.

Very easy to convert a old used fire extinguisher with a few brass fittings, they are also pressure tested.

Just having a good hose and some fittings to our spare tyre works well for us Lyndon.

Its amazing just how many little jobs and even bigger ones like blowing dust out of car and air cleaners etc get done with this simple arrangement.

Bonus being that it doubles as a spare for ARB air compressor.

Hi Lyndon

Fatso got it in one. I used them for cleaning inside lots of equipment. Just $15.

Jaycar aerosol can

Under no circumstances use a pump that does NOT remove moisture to clean anything electronic. Use the one for the tyres and you may just as well hose the insides of the computer out with water.

And then you can use the time that you would have wasted in building or adapting a pump etc into doing something positive like 10oz weight lifting in the shade and the cricket on TV. Or better still a line in the river.

Phil

There are a number of things that can be converted, fire extinguisers, gas bottles, and there are some smallish tanks available for use with on board air.

I have a converted 4.5Kg gass bottle I use as a quick portable source of compressed air for " technical purposes"
I have a "T" piece at the top with a female nitto on one side and a male nitto and a valve on the other.

If I pump it up to 90Psi that gives me plenty of air to blow out a projector when I change the lamp for a client without having to drag a compressor arround.
I fill it from my workshop air which is pretty dry. it takes about 30 seconds to fill from my 90psi workshop air feed.

If ya converting gass bottles, the thread varies, some have plain BSP threads some have BSP gas which has a more rapid taper.

Ya better off with a bottle that has a standard BSP thread as you will only get a turn or two of a standard BSP in a BSPT female and getting a tap to cut in these bottles is hard work as they are hardened stuff.

You will need to remove the various fuel specific items like valves, taps & safety devices, and flush the tank well with water.

Because LPG contains a putrification agent, no matter how well you clean the bottle out, the air will from time to time give a whiff of that fake putrid gassy smell.

A mate has a very large gass bottle as the reciever for his workshop air, and once every now and then he gets that whiff & its been in service for over 20 years.

NOW to the moisture issue.

As I said my workshop air is pretty dry..I've made sure of it.

If you want to pump up off a bare unfiltered compressor, yes there is an issue.

BUT, if you pump up then allow the bottle to cool well the moisture will drop out into the bottom.

then make sure you use the tank upright with a short hose & trigger blower.

once in a while invert the bottle and blow out any residual moisture before pumping up again.

If it realy worries you run the air thru a filter reg on the way out of the bottle and let the bottle cool well.

cheers