Background: Just put in a new well pump (Goulds 10GS10, 220 foot well, ~120 ft static head).
After things settled out I have now noticed a slow pressure leak -- tank pressure drops down over an hour or so triggering pump. I shut off house side and confirmed it is back leaking into the well head, not into the house. I assume this means the tank check valve (a Flowmatic, estimated age 16+ years) is not seating fully. Tank membrane tests good, it's a well-x-trol; I don't know the number off hand , but I measure about 6.5 gals to empty it from 55PSI to empty. Backflow problem did not exist before the well pump was replaced.
Questions:
1) On restart of we brought up noticeable sand and sediment. Water is pumping and running crystal clear now, but I still get a little bit of sand if I drain the tank to completely empty. Could it be bits of sand keeping the valve from seating?
2) Should I just replace the valve anyway, for good measure rather than trying to trouble shoot it?
3) Should I worry that the check valve at the pump is not seating as well and call the installer?
Thanks!
After things settled out I have now noticed a slow pressure leak -- tank pressure drops down over an hour or so triggering pump. I shut off house side and confirmed it is back leaking into the well head, not into the house. I assume this means the tank check valve (a Flowmatic, estimated age 16+ years) is not seating fully. Tank membrane tests good, it's a well-x-trol; I don't know the number off hand , but I measure about 6.5 gals to empty it from 55PSI to empty. Backflow problem did not exist before the well pump was replaced.
Questions:
1) On restart of we brought up noticeable sand and sediment. Water is pumping and running crystal clear now, but I still get a little bit of sand if I drain the tank to completely empty. Could it be bits of sand keeping the valve from seating?
2) Should I just replace the valve anyway, for good measure rather than trying to trouble shoot it?
3) Should I worry that the check valve at the pump is not seating as well and call the installer?
Thanks!