Originally Posted by cjohn2000
Dowsing rods. May sound nuts but I have had some luck. I made a pair about 12" long with 5" handles out of 14AWG copper. I would see if I could locate the general area of the zone then metal detect that area looking for the metal in the valve.
irrigation valves use stainless steel metallic parts, ferro-magnetic locators won't work. Tresure locators which locate non-ferrous metals usually don't work do to the extremely small footprint of the parts and the depth/soils mass.
if you choose to a metal detector you fall into the "even a blinde pig gets a peach now and then" catagory. it's more lvck than not.
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