sump pump back check valve


  #1  
Old 10-08-13, 08:55 AM
J
Member
Thread Starter
Join Date: Oct 2013
Location: usa
Posts: 1
Upvotes: 0
Received 0 Upvotes on 0 Posts
sump pump back check valve

Does it matter if the back check valve installed for the sump pump was installed at a 90 degree angle? Our basement has flooded 3 times and we were thinking the sump pump must have a problem. While watching a DIY video on replacing the sump pump and hearing how the check valve works I am now wondering if because the valve was installed at an angle that the flap may not be closing correctly. Should the check valve be installed straight up and down on the pipe or does it matter?
 
  #2  
Old 10-08-13, 12:05 PM
PJmax's Avatar
Group Moderator
Join Date: Oct 2012
Location: Jersey
Posts: 71,663
Received 3,328 Upvotes on 2,987 Posts
Welcome to the forums.

I prefer to install them straight up and down. Keeping it up higher towards the horizontal run will keep it from banging closed when the pump stops running.

Many check valves can be installed in the horizontal run but if you look inside most of them you'll see a hinge on the rubber stopper. The hinge usually needs to be up.

The check valve just keeps water from coming back into the sump pit. Is that where your water is coming from or did the pit overflow ?
 
  #3  
Old 10-08-13, 12:29 PM
lawrosa's Avatar
Super Moderator
Join Date: Dec 2010
Location: Galivants Ferry SC USA
Posts: 18,190
Received 78 Upvotes on 70 Posts
Also you could have got air locked if a proper weep hole was not drilled down near the pump on the discharge pipe... usually only 1/8" hole...
 
  #4  
Old 10-08-13, 05:30 PM
Norm201's Avatar
Member
Join Date: Sep 2013
Location: United States
Posts: 11,572
Received 648 Upvotes on 573 Posts
If the discharge pipe is not too long you could just skip the check valve all together. True all that water will flow back into the pit. But if it's not a constant thing don't worry about it. As an added plus, by not using the check valve it's a lot less messier when it comes time to pull the pump for service.
 
 

Thread Tools
Search this Thread
 
Ask a Question
Question Title:
Description:
Your question will be posted in: