Ani-Siphon pump?

[gcfiend]

I'm trying to automate some things in my setup, Auto-top off, water changes, etc.

I have a common problem with these items and thats the siphon effect.

I want to be able to hold a fairly large amount of water (for water changes especially) and have a pump send the water to my sump. Unfortunately when the pump stops that water keeps going.

Is there such a thing as an anti-siphon pump? or other solutions?

Thanks in advance

 

[JetCat USA]

you're pumping down hill if it continues to siphon with the pump off, just put a siphon brake near the pump.

 

[jdieck]

<a href=showthread.php?s=&postid=10783981#post10783981 target=_blank>Originally posted</a> by JetCat USA
you're pumping down hill if it continues to siphon with the pump off, just put a siphon brake near the pump.

I do not think that near the pump a break will prevent siphoning effect as it will stay submerged. Make the pipe go from the pump up and then down out the tank and set an orifice (break) at the point were the pipe (inside the storage tank) cross the maximum water level. Drill the orifice 45 degrees down so there is no splashing against the tank wall when the pump is working and a water stream leaves the hole.

A second alternative if is just for top off amounts is to use a peristaltic (doser) pump. they maintain closed all the time.

Finally a third alternative will be to locate the sump higher than the storage tank.

 

[Johnsteph10]

One way check valve (not the best option)

 

[gcfiend]

I'm a bit new to plumbing. Googled siphon brake

So just drill a small hole in my first elbow out of pump (and out of water) and that should kill my siphon?

Thanks JetCat for the reply

 

[JetCat USA]

Jose

the siphon brake i refer to is near the pump, not at the pump submerged.

Chris

That'll work, I've even used a T and have a check valve in the pipe going up from the T so when the pump is on and pushing water the check valve is in the closed position (forces water through the plumbing), when pump is off the check valve swings open and allows air in to brake siphon.

 

[gcfiend]

Johnsteph10,
I was thinking check valve as well (in case it siphons the other way), but in my case the the siphoning is continuing in the same direction as the pumping. My problem is that it continues to drain the water even after the pumps have stopped.

I'm hoping I have the right idea as far what I think is a siphon brake.

Thanks for the reply

 

[gcfiend]

Thanks you all for the replies!

JetCat, Sweet idea on the check valve and T. I'll try that!

Thanks again

 

[JetCat USA]

:thumbsup:

 

[jdieck]

<a href=showthread.php?s=&postid=10784147#post10784147 target=_blank>Originally posted</a> by JetCat USA
Jose

the siphon brake i refer to is near the pump, not at the pump submerged.

Not clear enough for my English

 

[HDAlien]

You could also look into a perstaltic pump like the Litermeter3.

 

[JetCat USA]

Sorry Jose, my 'Southern English' is often hard for people to interperate

HD,

if i read the original post right this is intended for water changes, a peristaltic pump would be a very slow go at a water change

 

[jdieck]

<a href=showthread.php?s=&postid=10784734#post10784734 target=_blank>Originally posted</a> by JetCat USA
Sorry Jose, my 'Southern English' is often hard for people to interperate

Well I'll bet I am from farther South. (South of the border) :lol: