Question
I live in Nebraska and I am a novice when it comes to irrigation systems.  Last fall I neglected to winterize my sprinkler system until after a freeze.  When I found that this had happened, the cap was on the ground and my Watts 800M4 QT was spraying water all over the side of my house.  I have seen that it is possible to replace parts via kits(Bonnet Assem. Kit, Check Kit, Rubber Parts Kit, Vent Float Kit).  The brass seems to be in good condition.  Without seeing the actual device would you be able to advise me on what kit might replace the parts that are broke from the freeze.

Answer
Hey Aaron, what I would suggest is called a retrofit kit. It comes with the bonnet and also the float inside and all the o-rings. Just incase the bonnet and the float broke in the freeze, you will have both parts. Watts has a website www.watts.com and it will show you the different kits available for the 800m4qt. You need to know what size  vacuum breaker you have (probably 3/4" or 1"). Good luck and let me know if I can be of further assistance, thanks and hve a great day.