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[kjw58]

 Just wondering if anyone has any experience using the new push fittings (aka sharkbite, gatorbite ect. ) on 1" pex lines from boiler.  I know they are a little pricey, but are they safe to use ?  and will I have to worry about them coming apart ?  Thanks

[Scott7m]

As far as a good fitting, yes, one of the best!  However, who can afford many of them?  Not me.  If I could pay that much for fittings I could pay the elec company too haha

[juddspaintballs]

I've read that after several heating and cooling cycles, they tend to start leaking.  PEX expands and contracts with heating and cooling, so it's going to move a little in the fitting too.  The clamps, compressions, and expanders don't allow the PEX to move on the fitting.  While most PEX manufacturers say the Sharkbites can be used, I wouldn't use them for every fitting for long term use.  They are very pricey if you're doing your whole setup with them. 

[yoderheating]

 I've used one inch sharkbite elbows a few times in hard to reach locations and I use a lot of 3/4 sharkbites when making connections at the hot water heater and I have never had a problem with them starting to leak over time.

[rosewood]

lot of people using pex/sharkbites for new and old construction for years now, mostly so scumballs won't steal it like copper!