Review on Watts 0887701 Bonnet Assembly Repair Kit by Allen Hart

I *really* hate this damn thing. I buy a new one about every 2 years. I usually clean my sprinkler system at the end of October, but if it freezes even once before then it will go bad. If it drops to 31 degrees just once before blowing out the sprinklers, it will rupture and need to be replaced. If the metal part of my backflow preventer ever breaks again I will replace the whole thing with a different brand. I gave it 3 stars: 5 stars because it's a perfect replacement for the original part and 1 star because the original part is such a piece of junk. (near Philadelphia, Pennsylvania, USA)