another new tank

[albert_dao]

Okay, so the idea here is that you run a stand pipe that nears the water level of the main display. The other drain just gets a grill. With the valve installed, you throttle the drain down until the water level rises just short of the standpipe. Bam, instant silent overflow with the added benefit of zero bubbles in the sump.

[Sebae]

Do you have the grill line and the standpipe line tied together after the valve before it goes into the sump ? Do you recomend a length or a specific distance ? Could you add a T below the top of the standpipe to increase flow ? Thanks.

[albert_dao]

Originally Posted by Sebae

Do you have the grill line and the standpipe line tied together after the valve before it goes into the sump ? Do you recomend a length or a specific distance ? Could you add a T below the top of the standpipe to increase flow ? Thanks.

You don't want to do the first and it's unnecessary to do the later. The standpipe won't even be draining water unless the grill clogs. As for putting the two pipes together, it defeats the whole purpose of running a silent overflow since the line coming in will suck in air. Two seperate drains. The primary one uses the valve, the standpipe is jsut backup.

[kari]

Albert, I'll drop off some graph paper so the next time you can follow the lines with your crayon

[i have crabs]

i like how the water is aqua couour so we can tell where the water goes.

[AndyL]

Stinky, do yourself a favour, don't bother with a ball valve or "gate valve" (as sold at western pump - actually a knife valve) to throttle the overflow down, www.mcmastercarr.com sells proper gate valves (threaded adjuster). Otherwise you'll be fiddling forever trying to get it right.

Albert - stop taking credit, you didn't come up with this design. Search RC for silent overflow, it's well detailed there.

[mr_alberta]

McMaster Carr actually no longer ships to Canada.

[albert_dao]

Originally Posted by AndyL

Stinky, do yourself a favour, don't bother with a ball valve or "gate valve" (as sold at western pump - actually a knife valve) to throttle the overflow down, www.mcmastercarr.com sells proper gate valves (threaded adjuster). Otherwise you'll be fiddling forever trying to get it right.

Albert - stop taking credit, you didn't come up with this design. Search RC for silent overflow, it's well detailed there.

Yeah, hi, I'm not taking credit.

Additionally, I've had at least ten people use this design perfectly well with a good quality ball-valve. I think the most time spent on the adjustment was somewhere in the neighborhood of five minutes. But hey, for anyone who wants to spend more than $25 on a valve, it's their money.

And hey Andy, if you would like, please step up and take the throne to the Kingdom of Negative-attitudes. It's all yours.

[EmilyB]

Originally Posted by kari

Albert, I'll drop off some graph paper so the next time you can follow the lines with your crayon