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Friday, June 25th 2010, 5:48pm
PVB back flow placement
I'm putting in a drip irrigation system for an orchard which will be situated on a slope of about 12 degrees. The 1" main line will go to a shut off valve, filter, check valve, fertilizer injector, pressure reduction valve, then the valve box(s).
My question is this: Since I have to have the PVB 12" higher than the highest drip line, can I install the PVB on the uphill side with the 1" line at 48" below ground pop it up out of the ground the 12" then take the line back down to the 48" and continue the line to the point that I pop it up and out for the shutoff........to the valves?
My question is this: Since I have to have the PVB 12" higher than the highest drip line, can I install the PVB on the uphill side with the 1" line at 48" below ground pop it up out of the ground the 12" then take the line back down to the 48" and continue the line to the point that I pop it up and out for the shutoff........to the valves?
Saturday, June 26th 2010, 7:53pm
Depends on the location, state, since most states will NOT come out and inpsect this...The fear of a city inforcing rules....Make it at least 18 inches higher at a minimum, and you gain some potentially valuable wiggle room, in the event that an inspector figures clearance from the bottom of the PVB
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