EcoRenovator - View Single Post - A7 AirTap install (ASHP hot water heater)

ctgottapee · 03-18-16, 01:57 PM

There are a number of compounds.

I've been using a blue paste 'Leak Lock' that was recommended for the refrigerant connections when I did the mini-split and it says it works on anything.

I had trouble getting a leak free seal at the water heater with the A7 connectors myself. The water heaters included nipples were the only thing that really worked.
Both thread size, thread base length, and whether it narrows or not, and then the sealant on the threads made for lots of factors, and it's a lot of time to test them all out.

If the pex crimp is not happy with the vibrations, one of those push to connect pex adapters (Watts ro Sharkbite) might be more forgiving as it has a flexible ring seal on the inside. I've used them all over on my plumbing retrofit and never a leak. Works well for me as and upgrading piece by piece so I can modify pretty easily.

03-18-16, 01:57 PM	#389
ctgottapee Helper EcoRenovator Join Date: May 2013 Location: Central IL Posts: 97 Thanks: 34 Thanked 9 Times in 8 Posts	There are a number of compounds. I've been using a blue paste 'Leak Lock' that was recommended for the refrigerant connections when I did the mini-split and it says it works on anything. I had trouble getting a leak free seal at the water heater with the A7 connectors myself. The water heaters included nipples were the only thing that really worked. Both thread size, thread base length, and whether it narrows or not, and then the sealant on the threads made for lots of factors, and it's a lot of time to test them all out. If the pex crimp is not happy with the vibrations, one of those push to connect pex adapters (Watts ro Sharkbite) might be more forgiving as it has a flexible ring seal on the inside. I've used them all over on my plumbing retrofit and never a leak. Works well for me as and upgrading piece by piece so I can modify pretty easily.