Do all Sprinkler valves need to be of same brand in a system? I have a system with 5 inline valves four of which are of the same brand and one which is an Orbit. The Orbit valve which is the newer of the 5 has been the trouble maker even after I replaced it with a new diaphram and solenoid. Even after replacing it still does not function correctly. It starts up for a few seconds then stops watering. I have checked the voltage coming from the panel and that is not the problem. Is there any suggestions what might be causing this. The valve was replaced at one point by somelse, but the inlet and outlet are both 1" piping could this be a problem? I noticed on the other valves which are spread across lawn have 1" inlet piping and then 3/4" out piping could this be the problem of the Orbit valve? Need help if anyone has the answer.
Today 23 Mar 2010--I tried to fix the Valve today and I was going to just replace it with another valve that is not an Orbit brand but i did notice something. All the other valves in the system are smaller valves with a 1" inlet reduced down to a 3/4" and the outlet of the valves are 3/4", basically the valves are 3/4" inlet and outlets and are smaller than the valve 3. The valve which is on zone 3 was replaced with a valve that is 1" inlet and 1" outlet. Question would this be a problem with water pressure as to why the valve is not working. Sometimes the valve comes on real quick then just turns off. Like it lost pressure but I have checked the valve and wiring and made sure it had the proper voltage from Panel and all other zones work fine except this one (zone 3)
Would the bigger valve ( 1" ) inlet / outlet cause problems
Out of ideas