Check valve or no?

[tmccaffery]

In my Redsea I want to prevent my pump from siphoning water to my sump in case of power failure and I heard this is what a check valve is for..

I am guessing it's a 1/2"

I am wondering if this will be ok?

https://www.usplastic.com/catalog/i...MIsLiX4v6C2gIVigOGCh3-DgzaEAYYAiABEgKQt_D_BwE

 

[Uncle99]

Yup, that would stop the reversal.
Come in many sizes, should match your existing size

 

[praveen956]

In my Redsea I want to prevent my pump from siphoning water to my sump in case of power failure and I heard this is what a check valve is for..

I am guessing it's a 1/2"

I am wondering if this will be ok?

https://www.usplastic.com/catalog/i...MIsLiX4v6C2gIVigOGCh3-DgzaEAYYAiABEgKQt_D_BwE

Check valves are good but don't solely rely on them as they can fail.. Not sure about the particular model.. i got the one with unions on both the sides from marinedepot.. it works very well.. i have heard to avoid the check valve shaped like an Y. But never had a first hand experience either way.


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[billdogg]

IMHO, you should NEVER use a check valve in a marine system. It is not a question of whether or not it will fail, but instead a question of when. When is usually the 2nd day of your vacation so that the flood on your floor and the empty table and have the greatest opportunity to ruin everything you own.

Design your system properly so that when the power or pump fails all the water is contained in the system. Use a anti Siphon hole or two, put it he return close to the surface etc and you will be good to go.

 

[mcgyvr]

I too would urge you to look at other methods besides a check valve..
They do fail...
At least pair it with another method like multiple antisiphon holes or ensure your return is high enough that the siphon stops quickly after power loss,etc...

 

[DivingTheWorld]

I would not. I ignored the naysayers and installed one on my current tank (Spears True Union). It failed immediately, but I designed my system to accommodate the extra water in the sump just in case. My next tank will not have a check valve.

 

[tmccaffery]

Well I can't adust the return since its for the redsea. I will though allow my sump room for this reason. Thanks

 

[mcgyvr]

Well I can't adjust the return since its for the redsea.

Nonsense.. Anything can be adjusted..

 

[nereefpat]

I would have thought for all the money red sea is charging they would have thought of this, and put the return close to the surface.

 

[tmccaffery]

Actually the return is close its actually the circulation pump not return

 

[Optionman]

Check valve or no?

The Red Sea, I have the 650, is designed so if the return pump fails the water won't overflow the sump. The overflow openings along the top are high enough that only a few gallons drains to sump when the main pump is turned off. Every water change I do requires me to turn off the main pump and though the sump fills up, It doesn't come close to overflowing.

Which RS do u have?


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[tmccaffery]

the Max 170

 

[Fraq]

I would make sure your return outlet is not too low under the water in your DT, so that the full siphon can quickly break and you won't get more water than your sump can handle.