[mrproduxn]

Have 30 year old home with approx 30 year old 25' well.well not used for 3-4 years.installed new 1/2 hp pump with no tank.prime to top of plumbing,close valve and start pump.builds enough pressure to blow out primed fill but then stops pumping.how do I check for air.once empty can feel plenty of pressure at valve.could well be dry.is tank a necessity.help please.

[jlisenbe]

Do you intend to use this as the main source of water for your house, or just for utility purposes?

[mrproduxn]

My house is on city water and the well is for watering the yard,pressure washing,car washing,etc.

[Flying Blue Eagle]

A pressure tank would be a big help . If you can get a roll of nylon string and tie a small weight on the end of string and something you can get down the hole like a wash cloth drop down into wellat least enough to reach the susposed depth of well pull back up see if rag is wet. I'm on a well and I had to replace pump after I moved in , when I pulled old pump out ,I checked to see where level on pvc pipe was then measured depth of water on pipe to bottom of pump . From top of well down to water mark 23', then to bottom of pump was 63'.