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Old 11-16-2006, 02:08 AM
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Default Plumbing - Return system

I've put considerable effort into designing the overflow system to be quiet.

Suffice to say that water falls through two back overflows. Each overflow has 2 x 1.5" outlets. In each overflow box, one of the outlets is choked back by a gate valve. This turns that outlet into a silent siphon. The other outlet has a durso standpipe, but this outlet is only collecting water that just couldn't go down the primary silent siphon outlet.

Emergency situation water testing confirms that even if one outlet is completely blocked, the other outlet(s) can handle the entire flow.

That's a G6 skimmer sitting in it's approximate final position.

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