Adding Extra Tank To Air Compressor

[Bingster]

I've got a compressor with a 26 gal. tank that does 10.5 cfm @ 90 psi.

I want to add a Sears 30 gallon tank to the set-up to give it extra air time.

Can anybody tell me the proper method of connection?

I assume I could pipe from the lower drain hole of the 26 gallon unit and connect that with the 30 gallon tank. (top or bottom of tank?)

I'm also assuming this would give me more time for using a small sandblaster to keep the motor from running continuously.

[randroid]

Bingster,

If you're looking for a straight-forward connection just hook them together sort of like you mentioned but don't use the bottom drain. It's there to remove any water from the tank so the bottom of the tank doesn't rust out. On my compressor I fitted an extra compression fitting (the quick connect type you see on the end of an air hose) and plan to use it for connecting another tank in series, with as many more tanks in the queue as I want to stack. That gives mobility to the tanks, should the need arise. If this is going to be a permanent installation just run a line from the top of one tank to the top of the other using "T" fittings and the holes already there.

When air is compressed it creates a high pressure area in the tank and the moisture in the air stays "dry" as a blue sky but when the pressure is released the low pressure area moves in and it clouds up and rains. The moisture condensing in the tank can wreak havoc with the tank in a disappointingly small time so drain the tanks after each use and if you feel you're wasting a lot of air draining the tanks slap a valve in the line and only use one tank when it's a smaller job. That's how I'm connecting mine when I get the chance.

-Randy

[dezeldoc]

Also don't forget the recovery time will be a lot longer so more heat build up and more condensation. If their are plugs on the ends or sides of the tanks go that route and use the biggest size you can so you don't loose the volume of air you are trying to get out of by doing this. I have 2 80 gal tanks piggy backed so when i use the sandblaster or other monster cfm consuming tool it will work.

[Don Coatney]

I use an air tank from a semi truck. I simply have installed this tank in my shop supply line. I have also installed an additional safety pop off valve and a condensate drain line on the bottom of this tank. Also in my system is a large pressure gauge so I can always tell the system pressure even if I am on the other side of my shop.