Go Back   Aquarium Advice - Aquarium Forum Community > Saltwater and Reef > Saltwater Reef Aquaria
Click Here to Login

Join Aquarium Advice Today
Reply
 
Thread Tools Search this Thread Display Modes
Please support our sponsors and let them know you heard about them on AquariumAdvice.com
 
Old 06-20-2005, 04:58 PM   #1
Aquarium Advice Apprentice
 
Join Date: Mar 2005
Location: South Carolina
Posts: 36
Check Valve Problem?

Need some plumbing help. When my pump powers off, I am getting backflow that is defeating my check valve. The water will continue to siphon until the water in the tank drains far enough to break the siphon of the water return, all the while slamming (loudly) the flapper in the check valve. To this point I have been able to manage the backflow with the extra capacity in the sump and by keeping the water returns aimed high toward the front glass (instead of pointing down) so the the siphon is broken quicker. My fear is that the returns may slip so they are pointed downward, increasing the amount of water that must drain before the siphon in the main tank is broken.

I'm not sure if the problem is something I will have to live with, or if I need to replace the check valve. The check valve is less than a year old and I would have thought it would have lasted longer. Any other "tricks of the trade" that I can apply to sleep well while out of town knowing that it would be pretty tough to overflow the sump?
__________________

__________________
Aw_Ref is offline   Reply With Quote
Old 06-20-2005, 05:05 PM   #2
Aquarium Advice Regular
 
Join Date: Jun 2005
Location: Calgary, Alberta, Canada
Posts: 62
I wolud go for a replacement. Buy a bunch. They are cheap. Put two of them in series, if in doubt and if the pump has sufficient pressure to overcome added resistance ...
__________________

__________________
Milan is offline   Reply With Quote
Old 06-20-2005, 05:10 PM   #3
Aquarium Advice Activist
 
Join Date: May 2005
Location: California
Posts: 158
generally 1 inch check valves are not cheap, they are like 20 bucks a pop ( talking true union 1 " socketed ). Compared to a 1/4 standard check valve at a dollar.

Try replacing it. If that doesnt work then you are going to have to lower the water level in your sump to be able to handle the overflow.
__________________
^_^
SirLight1337 is offline   Reply With Quote
Old 06-20-2005, 09:38 PM   #4
Aquarium Advice Apprentice
 
Join Date: Mar 2005
Location: South Carolina
Posts: 36
SirLight,

Yep, it's a 1 inch true union. Wanted to make sure I have going down the right path before forking out $20+ bucks for no reason. Thanks for the response. Hoping that takes care of it.

I've seen some other posts that talk about replacing the spring and flapper inside the check valve. Doesn't look possible. Anyone done it before? Where'd you get the parts?

Thanks,

David
__________________
Aw_Ref is offline   Reply With Quote
Old 06-21-2005, 08:30 AM   #5
Aquarium Advice FINatic
 
Join Date: Oct 2004
Location: GA
Posts: 510
save yourself some headache and get a new one
__________________
Jason is offline   Reply With Quote
Old 06-21-2005, 02:28 PM   #6
Aquarium Advice Activist
 
Join Date: May 2005
Location: California
Posts: 158
Its possible to replace the spring and flapper. The two ends stay connected to the pipe and you just replace the insides. I havent seen any rebuild kits or anything so i wouldent even know where to start with that. Maybe you could find a stiffer spring that would really snap closed and stay closed if you really had that much of a problem. Did it work before and just recently took a dump ?
__________________
^_^
SirLight1337 is offline   Reply With Quote
Old 06-21-2005, 08:55 PM   #7
Aquarium Advice Apprentice
 
Join Date: Mar 2005
Location: South Carolina
Posts: 36
SirLight - Yes, it worked without a problem for a few months then started giving me trouble. I cleaned it well, but that didn't seem to help.

Think I'll just take your original advice (and what Jason repeated) and buy a new one. Thanks to all for the help once again.

David
__________________
Aw_Ref is offline   Reply With Quote
Old 06-21-2005, 09:18 PM   #8
Aquarium Advice Addict
 
Join Date: May 2005
Location: Piedmont, NC
Posts: 4,580
Drill a small hole in the returns just below the water line. If you lose power once the water line reaches the small hole it will break the siphon. This way you can point your returns where you want and not have to worry about the valve.
__________________

__________________
*The fact that no one understands you doesn't make you an artist.
*If guns kill people...Spoons make Michael Moore fat.
Brenden is offline   Reply With Quote
Reply

Tags
val

Please support our sponsors and let them know you heard about them on AquariumAdvice.com

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Backflow (check) valve Keith A. General Hardware/Equipment Discussion 11 12-29-2009 08:49 PM
Check valve vs. tubing TankGirl Freshwater & Brackish - Planted Tanks 3 02-01-2005 10:16 AM
Check Valve the21kid General Hardware/Equipment Discussion 0 01-07-2005 10:40 AM
Check Valve Question betowess General Hardware/Equipment Discussion 9 08-12-2004 01:57 AM
How to position a check valve and an air control valve? An t-iasg General Hardware/Equipment Discussion 1 12-08-2003 06:52 PM







» Photo Contest Winners








Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -4. The time now is 09:19 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.