I need opinions?

[Surferlopez]

Ok, so I'm plumbing a system where the drain has to drop down to about 20" and then go back up 6" in order to drain into the sump...does anyone know if the back pressure the drained water will encounter would be a major issue?
I will be draining about 1800 gph through 2" pipe using the herbie method at the overflow...
anyone ever done this?

here is a quick sketch I made...

Thanks
Danny

 

[bgdiving]

The drop and rise will have no effect, the ectra 90 degree fittings will have more of an effect than the drop and rise and the incrase in total pipe leangth will have a slight but negligable effect on the system with 2 inch pipe.

 

[rogergolf66]

why the gate valve?

Roger

 

[Surferlopez]

<a href=showthread.php?s=&postid=13730175#post13730175 target=_blank>Originally posted</a> by rogergolf66
way the gate valve?

Roger

do a search for Herbie's method....dead silent overflow....

 

[mflamb]

MY OPINION:

A valve in a drain pipe with no open emergency overflow is inviting disaster.

 

[Surferlopez]

<a href=showthread.php?s=&postid=13730221#post13730221 target=_blank>Originally posted</a> by mflamb
MY OPINION:

A valve in a drain pipe with no open emergency overflow is inviting disaster.

Tank will have two drain lines and two back up drains...sorry not pictured....
my question is regarding the fall and the rise of the drain line though, does anyone think that I might encounter any problems with it?

 

[mflamb]

Like Brian Greene said, no issues with the drop and rise, but the fittings will cause some loss, but not much with 2" plumbing.

 

[CIGDAZE]

There will be no issue with the drop and rise. It will be identical to a system draining a total of 14 inches (40 - 26) with two 90-deg turns. No worries.

 

[cmjreef]

Yo Danny, I did a little homework and I agree... shouldn't be an issue. A little back pressure, but no threat of a flood. I'm sure you're relieved to hear that.

 

[Surferlopez]

Cool! I'm going for it...Thanks everyone....
Craig, stop by one of these days check out the progress on this monster...lol

Danny