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Old 03-26-2013, 10:30 PM   #1
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PVC Ball Valve Manifold

Here is another question, man I love this place.
I'm building a PVC Ball Valve Manifold 3/4" to control 2 sources of water (Well and Rain water collection system) to three separate destinations.
This will allow me to select which destination gets what water source.
Here is a photo (complements of Google Sketchup).

The Bottom Blue pipe comes from the well. The Light green comes from the rain system. The Dark Green, Purple, Yellow are the outputs to 3 separate locations.
So I want to have the Dark Green on well and the purple and yellow on rain, I turn ON the first valve on the bottom left and the other bottom 2 OFF. Then turn oFF the top left valve and the rest on the top ON.

Since this is 3/4 PVC, the connectors are extreamly rigid but the pipe is less. I want to put this in a plastic enclosure to seal from the weather and lock it to make sure someone doesn't turn on the wrong source.
The only parts in the ground will be the input lines. The output lines would be attached to the building.
If I place each connector 2-3/4" apart (the length of a tee. This spacing not shown in the photo), will this make my assembly to flimsy?
I may have to turn these ball valves single handed due to them being in the encloser and not able to support the pipe when turning. I'm afraid of breaking the connections.
Do I have anything to worry about or I'm just over analyzing this?
Should I just cut the 3/4" pipe so that my connectors are butted up next to each other?
Does anyone have a better approach to controlling these sources?


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Old 03-26-2013, 10:54 PM   #2
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Those PVC valves I've found are very hard to turn even when new.
Concider going with a Pex maniflold or at least using real brass ball valves instead.


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fetzer85 (03-27-2013)
Old 03-26-2013, 11:04 PM   #3
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Agree w/ Joe, when I turn my 1/2" cpvc ball valves I actually use one hand to hold the body of the valve and the other to turn it. They're also somewhat expensive so the real brass ball valves would likely be a winner w/ so little room to work with. If you turn them so they close vertically then you could still keep the close quarters in your diagram.
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Old 03-27-2013, 12:19 AM   #4
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Check into a solenoid valve like the ones used in irrigation. Or use uni-strut and clamps to support the pipe.

On a side note--Could you PM me a link how to draw pipes in sketch up if you have one? I've been trying to do some isometric drawings with that program and can''t make the fittings look good
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ball valve , manifold , pvc ball valves

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