Product review (1 stars): Bad threads and leaked
First, the valve would not thread properly into the bracket that wraps around the copper pipe.  I had to run to home depot to seek an alternative option.  Low and behold this same product is available at a big box store for less money.  I bought it there, knowing if it didn't thread right I could at least return it (unlike the one I bought here).  The second valve barely thread thru the bracket, but I managed to make it work.  After getting it installed, the fitting that holds the plastic tube started leaking.  I eventually found a different brand kit that did not leak.  Avoid this item, the quality is poor.