aviator79
New Member
So this check valve has always been here at tank and after much reading seems consensus is that only check valve should be at pump and none above ground. So getting a loud thunk when pump shuts off assume could be due to this check valve so pulled and can see spring gone but plunger still there so thinking thunk due to check valve slamming shut after pump stops due to pressure in tank. I have been unable to find info on removing inards so figure make this post as I do it and test results.
Grabbed rusted nut with plyers and broke off easy, popped out plunger and figure just remove plastic guide as shown.
Cleaned up threads, rinsed out gunk and blew out with air compressor. Will clean threads on nipple adapter and tank, retape and may add very light coat thread seelent and reinstall.
If works then pump CV good, if tank drains guess will replace this CV for now and plan to pull pump. 282ft deep well.
Pump has Grundfos control box. Tank dated 2013 and where wired go thru wall looks like was redone so assuming pump replaced same time. Will see if can find paperwork and call town to find if permit pulled to confirm date and maybe figure out what pump is down there. House built in 1996.
Grabbed rusted nut with plyers and broke off easy, popped out plunger and figure just remove plastic guide as shown.
Cleaned up threads, rinsed out gunk and blew out with air compressor. Will clean threads on nipple adapter and tank, retape and may add very light coat thread seelent and reinstall.
If works then pump CV good, if tank drains guess will replace this CV for now and plan to pull pump. 282ft deep well.
Pump has Grundfos control box. Tank dated 2013 and where wired go thru wall looks like was redone so assuming pump replaced same time. Will see if can find paperwork and call town to find if permit pulled to confirm date and maybe figure out what pump is down there. House built in 1996.