Swing Check Valve in Return Standpipe?

D

daijari

I'm wondering what you folks thing about putting a swing check valve in the return standpipe. My new 90g has an internal overflow, and the check valve I want to use has 1" slip connections. I was thinking of placing it in the 1" PVC return standpipe (cutting the PVC pipe and inserting it midway). Seems like a logical place, but having never done it myself, I could be wrong....

TIA,

Jerry
 
IMHO, I don't recommend 'em...

They'll eventually fail, and usually just when you need 'em.

They restrict the flow...

Many have metal parts, and that's a major no-no (Unless it's titanium or better) for contact with saltwater...

Really, for the purposes of keeping backflow as low as possible, just make sure you have your anti-siphon holes drilled in the return lines in the tank...
 
Understood Serk......

Kinda feel "stuck in the middle" of opposing views now, as others (not on these forums here) advised using a check valve instead of the anti-siphon...

I hate it when that happens....hehe! :)

On my 75, I'm using the anti-siphon hole and it has always worked. Now kicking myself for being swayed...

Thanks Serk, you input is very helpful. I'll just do the anti-siphon hole...

:)
 
Check valves fail... siphon holes can as well... but they fail way less often ;) If you want a sure fire way to avoid overflowing your sump, size it properly and make sure your return openings are shallow enough not to drain more volume than you can collect in the sump AND put the holes in.
 
Thanks Dave, Once I can get water in the system and can see where the water line comes up to on the return standpipe, I'll see where I need to put the whole.

Thanks all for your input.....

Jerry
 
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