Silent and Failsafe Overflow System

[ToeTag77]

Ill have to try in the morning, one of my ball valves was bad and the new one needs to dry before I put it under pressure.

So if the siphon is ever broke on the open channel it doesnt reset itself right?

 

[2_zoa]

There isn't a syphon in the open channel unless there is a problem.

 

[ToeTag77]

my bad I meant the siphon not the open ...

So leave the emergency open and the siphon open and close the open channel.

Then the flow SHOULD be too fast and the overflow will drain too low causing the siphon to take in air and stop working? So the catch would be to get it started and then close off the ball valve to the siphon channel quickly?


What I dont understand is even when the water flows over the emergency standpipe it still doesnt drain fast enough too keep up with the pump... ONLY when the open channels 1/4" air line gets blocked does the water drain fast enough... Could it be that I used regular 1.5" t's rather than sanitary t's? Could the harsh angle be throwing something off?

 

[BeanAnimal]

The Tees should be fine.

Yes, the fully open siphon should be able to handle most (or almost all of the flow). Do the test and see what happens.

How deep are the standpipe exits submerged?

 

[sikpupy]

<a href=showthread.php?s=&postid=14031517#post14031517 target=_blank>Originally posted</a> by BeanAnimal
If you can fit the elbows inside the trough it will be big enough. The 1262 will be somewhere around 600 GPH I would guess and will work just fine.

Weeeeeeeeell, actually............

1262 Hobby Pump
898 gph with a max head of 11.8 feet at 80 watts. Input 25/34 mm, output 16/22 mm.





I pulled the elbow out and rested it against the bulkhead and then measured, all good at 4". I just want to make sure the trough could handle it and be efficiant at skimming, thanks.

 

[ToeTag77]

The exits were submerged approx 10" but I just trimmed them down last night to maybe 5".

 

[BeanAnimal]

<a href=showthread.php?s=&postid=14034177#post14034177 target=_blank>Originally posted</a> by sikpupy
Weeeeeeeeell, actually............

1262 Hobby Pump
898 gph with a max head of 11.8 feet at 80 watts. Input 25/34 mm, output 16/22 mm.





I pulled the elbow out and rested it against the bulkhead and then measured, all good at 4". I just want to make sure the trough could handle it and be efficiant at skimming, thanks.

So figure for 600 or so GPH used as a return pump

 

[BeanAnimal]

<a href=showthread.php?s=&postid=14034232#post14034232 target=_blank>Originally posted</a> by ToeTag77
The exits were submerged approx 10" but I just trimmed them down last night to maybe 5".

The pipe outflows should only be submerged an inch or less during normal operation.

 

[sikpupy]

Oh, okay, gotcha, Hmm, I am sure the pipes can handle it but how would the trough do, if say, I stepped up to a "final" 900gph flowing into the trough? I was just seeing 900gph with that pump, I did not factor in head room and such. I might have to step up to a bigger pump, something that blows out 900gph with all factors involved as I think I may run a UV light too, have not quite decided on that one.

 

[BeanAnimal]

It should work just fine.

 

[sikpupy]

k, thanks

 

[tonyespinoza]

hey beananimal - can i submerge my drains all the way down to the bottom of my sump? I'd prefer to do this to prevent detritus from building up down there. (I have an input chamber with bulkheads on top that takes the water first, then it overflows over a set of filter socks in the next chamber.)

what will happen if i go this route?

 

[BeanAnimal]

You will have a lot of trouble getting the siphon to purge its air and you will reduce the overall flow capacity.

 

[tonyespinoza]

Got it. So it needs to be just below the sump level. I may stick a powerhead in there (pointed downward) if I want to make sure to keep the detritus in suspension.

 

[BeanAnimal]

<a href=showthread.php?s=&postid=14036042#post14036042 target=_blank>Originally posted</a> by tonyespinoza
Got it. So it needs to be just below the sump level. I may stick a powerhead in there (pointed downward) if I want to make sure to keep the detritus in suspension.

You may not need to.

 

[ToeTag77]

I think mine is broken.....

I cant hear it.....


=0)

 

[tonyespinoza]

awesome toetag! any bubbles in the sump? would love to see a pic of it running.

 

[2_zoa]

Hey Beananimal,

What if you were to drill a hole just above the water line on the syphon line? (for purging air) Could you submerge the lines farther then?

 

[BeanAnimal]

Drilling the hole will help tp purge the air. However, the deeper you put the lines, the more pressure they will be under. A small hole will quickly backup with water and preserve most of the pressure in the pipe, reducing the flow. In other words, there is some wiggle room, but a shallow pipe will almost always work much better.

ToeTag, I assume you got it running and it restarts properly without having to fiddle with the open channel or siphon valves?

 

[2_zoa]

Thank you.