Register free!


Reply
 
Thread Tools   Display Modes
  #1  
Old 09-08-2011, 10:21 PM
MEXANDME MEXANDME is offline
LawnSite Senior Member
 
Join Date: Apr 2004
Location: MYRTLE BEACH,SC
Posts: 397
Leaking Check Valve Question

I have a customer whose check vave is stuck open. The pump is a 1 HP above ground and the water source is a community pond. When I prime the pump; I am getting 23 gallons per minute with a bucket test. But, as soon as you turn off the pump, you can see the water level at the pump immediately disappear.

The faulty check valve is about ten feet out into the pond under about three feet of water and will be very difficult (but not impossible) to replace.

My question is this. Can I install an additional check valve back up on the bank (underground) and just leave the faulty one where it is?

FYI, the suction line is 1 1/4" PVC.

Thanks,

Mex
Reply With Quote
  #2  
Old 09-08-2011, 10:24 PM
Mike Leary's Avatar
Mike Leary Mike Leary is online now
LawnSite Fanatic
 
Join Date: Mar 2007
Location: Cactus Hug, Arizona
Posts: 20,566
I always thought that was called a "foot valve".
Reply With Quote
  #3  
Old 09-08-2011, 10:33 PM
MEXANDME MEXANDME is offline
LawnSite Senior Member
 
Join Date: Apr 2004
Location: MYRTLE BEACH,SC
Posts: 397
Mike,

In this case it is actaully a check valve. The is ten feet of well strainer beyond the check valve. The check valve was actaully on land several years ago when installed but the lake has risen significantly since then.

Thanks,

Mex
Reply With Quote
  #4  
Old 09-08-2011, 10:41 PM
Mike Leary's Avatar
Mike Leary Mike Leary is online now
LawnSite Fanatic
 
Join Date: Mar 2007
Location: Cactus Hug, Arizona
Posts: 20,566
Hmm, maybe someone else has a clue, but every pond system I've ever dealt with had a foot valve, period. They needed to be serviced every few years, but the sites I serviced had a buoy marking the location. and a rowboat.
Reply With Quote
  #5  
Old 09-09-2011, 01:10 AM
Wet_Boots's Avatar
Wet_Boots Wet_Boots is offline
LawnSite Fanatic
 
Join Date: Mar 2005
Location: metro NYC
Posts: 40,371
You can have a check on the pump inlet. I never use a foot valve if I can do without one (pump lift of 5 feet or less) because I want to be able to drain the suction line without removing it from the pump.
Reply With Quote
  #6  
Old 09-09-2011, 06:38 AM
AI Inc's Avatar
AI Inc AI Inc is offline
LawnSite Fanatic
 
Join Date: Dec 2007
Location: Southern NH
Posts: 21,806
yes you can add an additional CV anywhere along the intake you so desire. Closer to the source the pump will struggle less.
__________________
Reply With Quote
Reply

Thread Tools
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

Forum Jump






Powered by vBulletin® Version 3.8.6
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Copyright ©1998 - 2012, LawnSite.comô - Moose River Media
All times are GMT -4. The time now is 01:47 PM.

Page generated in 0.07189 seconds with 9 queries