If you do, in fact, have an indexing valve, establish whether or not it's a gear system (WateRotor)or pressurized disk (Fimco.) If it's a waterotor, then you'd best upgrade (Google Fimco valve)and find the best valve (3 or 5 zones) for YOUR application. Unlike the Pinnacle WaterRotor which uses as constant flow of water to advance to each successive station using about 30 gallons of water, the fimco advances by starting and stopping each zone with at least a minute between zones. You MAY have to purchase a new clock as each station/zone needs it's own start time w/Fimco valves. Most 2-3 program clocks with 3 start times will do the job with a bit of creative programming. Fimco also sells it's own breed of controller for the Fimco Valves. It's really quite a good system. Only one electrical valve is needed per indexer.
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