Sounds like my problem,inspect the diaphram by rolling the edges for a split, then replace.
rural water system Found a small split in the diaphram, [hard to see] Took apart valve 13 and that diaphram had a split too.[exactly same as previous] Question--blowing out the system for the winter with too much pressure cause this ? Age of system is 4 years and 8 out of 13 diaphrams bad at one time.
Bought a new valve repair kit and put in new diaphram in valve 1 and it works now. It seems odd to have this many diaphrams bad in one year. Anyone have a sectional view of the DV valve ? What fails in them or do they dry out? Turned on this spring-ZONES 4,6,10,11,12 worked by controller no work on ZONES 1,2,3,5,7,8,9,13.
Refer to original message---Took valves apart and everything looks good
You probably have the two zones 4 & 8 control voltage tied together somewhere . Try to disconnect one of the control voltage lines at the valve [4 or 8] Select the other zone and then measure the voltage at that valve and it should be your 30 volts. Swapping to spare wires would fix it. Your return wires are probably ok .
My system = 13 Rainbird DV valves with 3-4 of the 5000 heads on each zone. System was installed by a professional and lines were blown out last fall by him. Turned on this spring-ZONES 4,6,10,11,12 worked by controller no work on ZONES 1,2,3,5,7,8,9,13. RASTER Test Ok to all zone valves. Turned DV valves 1/4 turn CCW and some or no water comes out of head.[hear water running at valve,sprinkler heads stay down] 28 volts to valves from controller[ok] Took valves apart and everything looks good. Ho...
