Got a response from Orbit. They are sending me some new solenoids (different ones). They said it sounds like mine are not raising enough, thus when I unscrew them or hit the valve on/off I have full pressure. We will see. Surpised I got such a quick answer from Orbit and sending me the solenoids.
Installed four new Orbit (I know not the best) anti-siphon valves about a month ago because my old Richdels were leaking. After installation they seemed to work fine, but since it was winter, I did not use them. What happens is this: When turned on either manually or with the controller the pressure is very low at the heads. I found that if I turn my manifold main line valve off then right back on the pressure is great and they work fine. This happens on all four stations. Turn the main line off...
