"Volume" of Air Compressors

Wanderoo

Can anyone tell me the minimum "volume" necessary, equated to gallons, for an air compressor being effective to blow out the water lines in the T@B?  Harbor Freight has a 3 gal. oil less "pancake" compressor on sale and also an 8 gal. -- same type -- but more $$. 

Thanks!

:-S

Bob_E

The volume of the compressor tank has little to do with blowing out the water lines. As long as the compressor is plugged in and the pressure is set to a psi setting it will run to keep up with the selected psi. I do mine at 35 psi (pounds per square inch)

Wanderoo

Do you use a portable air compressor (12V) or a 110V model?  I don't know whether my little Slime portable air compressor I use for my tires is good enough to blow out the water lines.  It doesn't have the functionality to set the psi, but it does have a gauge.  Last weekend I took a shot at it, but the compressor only got up to 10 psi.  I had the T-stem drain valves in the T@B in the open position and the water faucets open. I could hear sounds as though there was air being run through the lines, but no water came out of the faucets.  I have not run any water through the lines since the first of August, and the water that drained out under the T@B from the Alde lines was probably no more than 1/2 gal.

I just wonder whether it was doing its job or not.  Maybe I should have shut the T-stem valves to build up more pressure and still left the sink faucets open.  I don't want to buy another compressor if I'm just doing it incorrectly.

Thanks, Bob.

:-?

RZRBUG

I winterize mine with RV (pink) antifreeze, then thoroughly flush it with fresh water when ready to use it again.  I have never tried to completely flush the lines.

Cyclonic

I use the three gallon one from Harbor Frieght, works well and does the job.  You can adjust the pressure on it, I usually clear the lines at about 25psi.  Check out this thread: http://tab-rv.vanillacommunity.com/discussion/3737

Wanderoo

Thanks, Nathan!!!!  The 3-gal. one is on sale at our Harbor Freight (with coupon) for $39.99.  I'll give it a try.  ^:)^