Re: Should I replace my pressure tank?
Posted by Hube on June 09, 2003 at 08:53:21:
In response to Re: Should I replace my pressure tank?
: Hello,

: I have well water which is pumped into a 30 year old steel pressure tank. There is no separation between the air and water. I maintain the tank carefully, recharging it every 4 to 6 months. It runs 42PSI (pump on) to 62PSI (pump off). I get a drawdown of 8 gallons before the pump turns on. The pump was replaced 15 years ago.

: Here is my question. Should I replace this prefectly good, working tank with a larger precharged bladder tank? Since I get only approx 8 gallons between each pump cycle, I would like to decrease the amount of times the pump runs while increasing the amount of water per pump cycle. A 15 year old pump may not have too many cycles left in it and replacing it would be costly. I heard that the pressure tank should be sized based on the number of fawcets in your house. Doesn't it make sence to get the biggest tank possible so that you have more water per pump cycle? I have 14 fawcets in my house. What would you recommend I do? Leave the old tank alone? Replace it with a standard bladder type tank or replace it with the biggest tank I can buy?
: Thanks!!
: David.
Hello David; Remember that line? "if it aint broke ...don't fix it ? If your getting a drawdown of 8 gallons on a 42 gal tank ,your doing great. Even most of the new bladder type tanks can't do more than that. At a on'off of 20/40 you would get say 9 to 10 drawdown. The higher on/off decreases the drawdown. If you cut yours down to a 30/50 setting ,you would perhaps draw an extra gallon. IT's misleading the way they sell these new tanks. HD had a tank that was 82 gallons ! wow! BUT it only delivered (drawdown) about 8 gallons at a 20/40 setting..7 at 30/50. Keep your old tank going, and when it does quit check out the drawdown on the new ones. Save your pump and electricity, get the highest draw to match your pump gpm. Remember a pump should run no less than a minute to operate properly. Good luck Hube

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