Just thought I would share Another one of my projects involving failed/failing Qest compression fittings and tying new PEX line into the existing plumbing.
I originally noticed that the freshwater pump would cycle every 30 minutes or so. I had figured the pump was leaking internally and bleeding pressure back through the diaphragm. Once I started showering on the boat, I decided it would be better to just run the hose to the city water input. I noticed a fizzing sound one night and after finding part of the bilge under the sink full of water I traced the sound to behind the access panel under the galley sink. As you can see in the pictures, the one compression nut has completely failed and looks like it has been weeping for a long time. The other compression nut is on it's way out. A survey of the rest of the fittings in the boat revealed a couple cracked nuts, but no leaks. With the good nuts I've saved, I'm going to repair the other couplers on the boat. Long term goal is to replace everything with new PEX. Only thing left for me to do to finish this part of it up is zip tying the new lines to the cable run. Pics below. Instead of using the PB to PEX coupler sold by Sharkbite, I found the female swivel adapter fits the threaded end of the "T" just fine so the new lines are complete with no splices.

Attached files
I originally noticed that the freshwater pump would cycle every 30 minutes or so. I had figured the pump was leaking internally and bleeding pressure back through the diaphragm. Once I started showering on the boat, I decided it would be better to just run the hose to the city water input. I noticed a fizzing sound one night and after finding part of the bilge under the sink full of water I traced the sound to behind the access panel under the galley sink. As you can see in the pictures, the one compression nut has completely failed and looks like it has been weeping for a long time. The other compression nut is on it's way out. A survey of the rest of the fittings in the boat revealed a couple cracked nuts, but no leaks. With the good nuts I've saved, I'm going to repair the other couplers on the boat. Long term goal is to replace everything with new PEX. Only thing left for me to do to finish this part of it up is zip tying the new lines to the cable run. Pics below. Instead of using the PB to PEX coupler sold by Sharkbite, I found the female swivel adapter fits the threaded end of the "T" just fine so the new lines are complete with no splices.

Attached files
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