I've used ball's on almost all i've done before. Only reason i didn't here was i lived in Va. when we bought the house and just did the install on a weekend not knowing if the code here would allow it. The original was a gate, so i just went with it, you know how the code crap goes...lol. Was lucky enough to find out they required the expansion tank that wasn't originallly here, and i was unaware it was needed, by code, when the heater was replaced.
