Check valve question

[Mustangman11224]

Ok so in my 36 gal tank I have a 4 valve splitter with a check valve built in. When I unplugged my air pump I noticed the water still filled the Lines a little above the water level... Is the check valve supposed to stop all water from entering the airlines or is that normal... I just don't wanna loose power when I'm not home and find water coming out of the ceiling from upstairs, I would be dead lol.
Thanks for the help
Dan

 

[Ian086]

Ok so in my 36 gal tank I have a 4 valve splitter with a check valve built in. When I unplugged my air pump I noticed the water still filled the Lines a little above the water level... Is the check valve supposed to stop all water from entering the airlines or is that normal... I just don't wanna loose power when I'm not home and find water coming out of the ceiling from upstairs, I would be dead lol.
Thanks for the help
Dan

It's perfectly normal. Water can fill the line right up to the check valve unless you have the pump above the water line, which is not always practical. I have my check valves about 4" from the pump(in the bottom of the cabinet) and have never had a problem....

 

[Mustangman11224]

Ok thank you lol I was worried It wasn't working correctly.