Overflow idea - Will it work?

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Hi guyz. I need some advice, i need to do my overflow on a tank i built. Its not a big tank so im thinking of using 25mm pvc. I want to drill the bottom, but i DONT want to build a box of any kind, not even a skinny one. So i was thinking of using a 110mm pvc pipe to act as a overflow box. With a modified durso in it. When i say modified i mean i'll have no 90' elbow coming out from the t piece. So water will enter the standpipe horizontally. Will it be silent? I will install a valve on the outlet to control the water level in the 110mm pvc pipe...
 
Its not a big tank so im thinking of using 25mm pvc
Too small

So i was thinking of using a 110mm pvc pipe to act as a overflow box.
50mm will fit easily inside the 110mm. and get yourself a soil vent valve from Builders Warehouse. That is enough to be a durso. See the one close to me eventually got some in again.

But a 110mm pipe in your tank is enormous. Cut a piece, and put it in. See for yourself before you drill the tank.
 
Soil vent valve
109449ca4da6925f9.jpg


Cap removed
109449ca4dbac399f.jpg


Just remove the rubber washers inside. Drill 6mm hole on top, with airline valve. Jobs done, have a beer.
 
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