I have a 3/4 T value that goes into a Febco 3/4 backflow preventor that then goes to into four 1" rainbird valves.
Ran it last year with no issues. This winter my neighbor told me the winter box was making a hissing noise. I took the cover off and the water was coming out of the bottom of the backflow. So I turned off the T valve and opened all the valves manually to release any pressure in the lines. I left them open.
I went out this afternoon to turn the valves off and turn the timer back on and get everything going again because it looks like winter is done here and now when I run everything I am still getting water out of the backflow.
I have tried opening two valvues and letting it run, taking the head off of one of the heads, I have opened and closed all the valves in every order I can think off and everything I do I still get water shooting out of the back flow. I installed this myself last summer.
Any advise is appreciated.
PLEASE HELP!!!