Probably knock off fittings or similar and it's likely they may not supply direct burial rated ones to be price competitive. DB is gonna have a lot more pressures and movement from the outside. Even top side would see a lot of potential pipe movement.
Originally Posted by pinballlooking
I have a pressurized Geo system it has recently loosing pressure.
The fittings that came with the kit were shark bite style fittings for the 1” Pex. There was six of these fittings. They all were dripping. They were covered in pipe insulation so it was hard to see.
They get condensation so it is not apparent that it was happing. One fitting had drip when there was no condensation.
I got the razor blade and found one leak. Then a cut open all fitting like this one and everyone had a drip.
I replaced all of them with crimp fittings. I just checked again after A few hours and it still had good pressure.
I will check tomorrow and some going forward to make sure I have good pressure.
These worked for two years not sure why they just are not working anymore but they are all gone now.