Air volume in hydropneumatic system.

[rcmjones]

From my previous question I learned that my air over water system needs the check valve with incorporated snifter valve at the tank, and the bleeder valve down well.  Now I need to find out if, with the CSV, does the amount of air in the tank have as much importance.  I will still get some air supplied with each pump start, but with less starts, the tank may end up with more water than usual.  I would like to avoid having to pull the supply line out of the casing to lower the bleeder valve if it isnt necessary.

[Cary Austin]

The amount of air in the tank is completely meaningless as long as a faucet is running somewhere.  But when you are not using any water, the amount of air in tank determines how much water your tank will accept.  As long as there is enough air for the tank to accept 1 gallon of water it will still work fine.  And that doesn't take much air.  You really won't know until you try it, as some systems lose air quicker than others.

You still may want to look at the bleeder, as the rubber ones will pop out with more than 70 PSI from the backpressure of the CSV.  If it is a brass bleeder it can handle any pressure you have.  And if you have it up to look at it, you might as well lower the bleeder another 5' while you are at it.