Thanks for your review. Those check valves are specifically made to be used with a Hunter Pro Spray head, so if you have something else installed other than a Pro Spray this check valve wouldn't work for you. Please get in touch directly and we can help you to make sure you get the check valve that you need for your system.
“Second time I've used these and they really help in keeping water in your irrigation pipes and spray bodies. Saves water from always seeping out on the low elevations of your heads and also quicker start ups as water is retained in the pipes. I always use them for my jobs now.”
