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1" PVC to 3/4" PVC when do I reduce it?

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pdragn78

New Member

Posts: 11

11

Thursday, November 1st 2012, 10:54pm

double check valve?

Would a double check valve fix the design issue with the slope, if installed upstream of the anti-siphon valve? Or do I still need to scrap the anti-siphon valves with the double check valve upstream?

Wet_Boots

Supreme Member

Posts: 4,102

Location: Metro NYC

12

Friday, November 2nd 2012, 8:06am

You need to stop work, and stand back a moment. Find and post a diagram of the property and its elevations, or maybe you can find an overhead photo on Google Earth to grab. We need to see the valve location and how its elevation compares to the property high point.
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