? about the diy overflow

[jsodwi]

OK i've been reading thru this thread and I am wondering if I built one of these overflows if it will work for my drip system. I want to drain water from my sump. It is a 180g sump so its 24" tall. The water level is roughly 10-12" . I plan to run 1.5-2 gph on the drip. My question is will this thing be able to hold a siphon being that the water level is so low in the sump? I am not opposed to hooking up an aqualifter pump if need be. Also I'm guessing if this were to work, I can use some small pvc 1/2" or 3/4"

 

[nolapete]

OK i've been reading thru this thread and I am wondering if I built one of these overflows if it will work for my drip system. I want to drain water from my sump. It is a 180g sump so its 24" tall. The water level is roughly 10-12" . I plan to run 1.5-2 gph on the drip. My question is will this thing be able to hold a siphon being that the water level is so low in the sump? I am not opposed to hooking up an aqualifter pump if need be. Also I'm guessing if this were to work, I can use some small pvc 1/2" or 3/4"

It will hold siphon regardless of how low the water is. When the water level is higher than the inlet, the water will flow. Low water level is no different than the power being off. It will restart the same way.

 

[nolapete]

or this.. is there a mixture lol the only thing i can think is to an over sized overflow for the sump and and out the window lol or drill a whole which is not an option

The only way what you have drawn will work is if you add the water you are dripping in to the tank rather than the sump.

If you add it to the sump, the water level in the sump increases, but the flow from the pump doesn't so the tank level won't increase.

If you add it to the tank, the water level in the tank increases allowing water to flow out of the second overflow, but only any amount that the primary overflow can't handle.

What you want to do will not work as you want it to. It can let a little extra water out, but it won't be consistent.

 

[jumpnjoeyz]

Take a small section of PVC (I used 1/2") and make a big U shape. Then get a peice of 1" and cap the bottom. Install a "T" where you want the water level to be, hang it on the tank (I used a PVC hanger zip tied to the 1" tube), put the "U" in the 1" tube and the tank then it's done. Just fill the 1" tube and install an air line check valve on the "U" to pull the air out.

I think this is the method that Li and a couple of others are using. It's working great for me.

Do we use the horizontal flow chart to figure pipe size for desired flow for this type of set up?

Thank you in advance for your help!

 

[mos90]

It will hold siphon regardless of how low the water is. When the water level is higher than the inlet, the water will flow. Low water level is no different than the power being off. It will restart the same way.

id like to do a drip system also with 1/2" pvc. what diagram is the design i will need? should u have a check valve on the top?

 

[mos90]

i think ill try the 1 on the right in 1/2" should work.
would u recommend a air check valve on the top?

 

[JakeH]

i think ill try the 1 on the right in 1/2" should work.
would u recommend a air check valve on the top?

Nothing in your last 2 posts leads me to believe this is a good idea. Same thing I said to Austinchap last month. If you aren't a plumbing wizard & not a jedi of the PVC overflow (meaning you've built more than one), you are in no way ready to decide on a design or pipe specs for a drip system using an overflow. Start with a PVC overflow going to a sump. If that works (for more than a week, mos!) without flooding your whole house, maybe you can start dreaming up drip systems. No offense intended, but "prior proper planning" isn't the first phrase I think of when I see your name come up...

 

[mos90]

Nothing in your last 2 posts leads me to believe this is a good idea. Same thing I said to Austinchap last month. If you aren't a plumbing wizard & not a jedi of the PVC overflow (meaning you've built more than one), you are in no way ready to decide on a design or pipe specs for a drip system using an overflow. Start with a PVC overflow going to a sump. If that works (for more than a week, mos!) without flooding your whole house, maybe you can start dreaming up drip systems. No offense intended, but "prior proper planning" isn't the first phrase I think of when I see your name come up...

i deserve that last comment.

im not running a sump so that is out. i was just following ideas of others that have made it work. what makes u think that if i follow the design on the right that it wont work. it worked for others.

if u dont think it will work, could u give me a design that will.

but i cant seem to find a check valve

 

[mos90]

found a check valve im gonna test it out tonight. dont worry jake im a big boy. if it doesnt work u can be the first to say i told u so. this is only a test!!

 

[redtailshark1]

it will not loose its prime if the down loops are at the bottom and the T is is at half way problem solved