I recently purchased a high pressure sand blaster, it works great but it drains my 20 gallon compressor very quickly. I have a 80 gallon compressor with a bad motor. Does anybody out there know if I can plump the the 20 gallon into the 80 gallon? Essentially I want to use the 80 gallon as a reserve tank, let the 20 gallon fill the 80 gallon for increased air flow. Does anyone know how I could do this without blowing myself up. Do I need a blow off valve or something of the sort in the 80 gallon? please advise.
i have a 80 gallon plumbed in to my 20 gallon for more air . all i did was cap all the holes in the 80 gallon tank leaving one hole to fill in to from the 20 gallon. used a flexable line to connect the two together. only problem with this is it will take longer to fill as its more tank now . depending on pump and motor on the 20 gallon will tell if you can sandblast and for how long. Jen
Just put a second air chuck on the 20 gal. and a air fitting on the 80 gal and use another airline. OK, know that that is out of the way. That 20 gal unit is still to small to keep up with the CFM's you will need. But you will be able to blast for a little longer time between pump ups.
Look for the tag on both tanks that say what there MAX PSI is. I'm willing to bet that the 20 gal is rated less than the 80 gal.
Just replace the bum motor on your 80 gal. compressor. You need more CFM than your small rig can produce. .............. Jack
Won't be of great benefit. You'd have longer blasting time, (a bit) but a lot longer to pump up too. You need both the big tank and a big enough motor and pump to feed it. Sandblasing requires more CFM than most any other air-powered process.
I'm sure that you've considered replacing the motor on the bigger compressor and I'm also sure the cost is what has prevented you from doing it.........correct? That being the case you can hook the two tanks together as described but here's the rub. With the two tanks at full capacity you'll be able to blast for a longer time before the compressor is unable to keep up and will require you to stop until the refilling takes place but the refilling process will take much longer and tax your smaller compressor possibly beyond it's endurance (fail point) and then you'll have two dead compressors. There is no free lunch regardless of what any slick talking politition tries to tell you. Frank
Your limiting factor is the motor and compressor on the 20 gallon tank, not so much the capacity of the tanks themselves. Sure, you will get a few minutes more blasting time but it will be offset by the time it takes that little motor to recover the spent air. The air you consume has to come from someplace and a bigger capacity motor and compressor is the only way to get it. Where you now wait X number of minutes for the compressor to catch up, you will be waiting 4 times X for it to catch up. Don
Only two choices bigger compressor or smaller blasting unit. The small 110 unit will never keep up even with 2 tanks.
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