CLICK HERE AND JOIN OUR COMMUNITY TODAY, IT'S FREE!

Go Back   Plumbing Zone - Professional Plumbers Forum > Professional Plumbers Forum > Residential Plumbing


Reply
 
Thread Tools Display Modes
Old 02-21-2012, 01:58 PM   #1
Junior Member
 
Join Date: Oct 2011
Location: Montana
Posts: 5

View bjcrist1234's Photo Album My Photos
Default Back to Back Toilets

I have just installed two new Toto toilets and they are back to back. When toilet number one is flushed everything is fine. Flush #2 toilet and it pulls water out of the bowl of #1 toilet. Clear down into the throat of the bowl. Both toilets use the same vent. A misteryto me! Any thoughts?
bjcrist1234 is offline   Reply With Quote

Warning: The topics covered on this site include activities in which there exists the potential for serious injury or death. PlumbingZone.com DOES NOT guarantee the accuracy or completeness of any information contained on this site. Always use proper safety precaution and reference reliable outside sources before attempting any construction or remodeling task!

Old 02-21-2012, 03:45 PM   #2
smh
 
justin's Avatar
 
Join Date: May 2010
Location: U.S.A.
Posts: 603

View justin's Photo Album My Photos
Default

Quote:
Originally Posted by bjcrist1234
I have just installed two new Toto toilets and they are back to back. When toilet number one is flushed everything is fine. Flush #2 toilet and it pulls water out of the bowl of #1 toilet. Clear down into the throat of the bowl. Both toilets use the same vent. A misteryto me! Any thoughts?
bigger vent . or restricted
__________________
J-L Plumbing Company
M-38935
(940) 682-6635 / (817) 304-2761
jlplumbingcompany@gmail.com
justin is offline   Reply With Quote
The Following User Says Thank You to justin For This Useful Post:
Mississippiplum (02-21-2012)
Old 02-21-2012, 04:38 PM   #3
Pop Icon
 
billy_awesome's Avatar
 
Join Date: Dec 2011
Location: London, Ontario
Posts: 268

View billy_awesome's Photo Album My Photos
Default

You would think if the one toilet worked fine, there wouldn't be a blockage in the vent, what size vent for your dual vent? 1 1/2" for my code, but really a straw could vent some of these low flush toilets.

It might even be a blockage in the one toilet, or maybe a cracked toilet, it's usually something stupid and never crazy atmospheric pressure dilemma.
__________________
Shark-bite virgin
billy_awesome is offline   Reply With Quote
Old 02-21-2012, 04:59 PM   #4
Senior Member
 
Join Date: Oct 2011
Location: cleveland ohio
Posts: 114

View walker426's Photo Album My Photos
Default

Quote:
Originally Posted by bjcrist1234
I have just installed two new Toto toilets and they are back to back. When toilet number one is flushed everything is fine. Flush #2 toilet and it pulls water out of the bowl of #1 toilet. Clear down into the throat of the bowl. Both toilets use the same vent. A misteryto me! Any thoughts?
Are they connected on a double san tee or wye and what is the total center to center distance of pipe
walker426 is offline   Reply With Quote
The Following 2 Users Say Thank You to walker426 For This Useful Post:
SirAdrian (02-22-2012), xyleman (02-23-2012)
Old 02-23-2012, 01:28 AM   #5
Senior Member
 
Join Date: Oct 2011
Posts: 208

View MikeS's Photo Album My Photos
Default

yeah, wasn't there some discussion about this a little bit back? About the difference between a double sani-tee (which is incorrect) and a double fixture fitting? And how these new toilets on double sanitees have this problem? I just did a back to back toilet repair, but made sure I used a double fixture fitting, even though the supply house wanted to initially give me a double sanitee.
MikeS is offline   Reply With Quote
The Following User Says Thank You to MikeS For This Useful Post:
Redwood (02-25-2012)
Old 02-23-2012, 10:22 AM   #6
CEO Speedwagon.
 
LEAD INGOT's Avatar
 
Join Date: Jul 2009
Location: Under the Stairs
Posts: 1,646

View LEAD INGOT's Photo Album My Photos
Default

If you have a 3" sancross and 3" stack, you have to maintain a minium of 30" center of stack to center of flange. The 30" is to absorb the shock of the higher velocity discharge of the newer toilets. The 30" is code where I'm at, but the science behind it universal.
__________________
Every saint has a past, every sinner has a future.
LEAD INGOT is offline   Reply With Quote
Old 02-23-2012, 12:01 PM   #7
Member
 
Join Date: Feb 2011
Location: van island bc
Posts: 79

View xyleman's Photo Album My Photos
Default

I believe that toto wants a double wye as to san t in their lit.
xyleman is offline   Reply With Quote
The Following User Says Thank You to xyleman For This Useful Post:
Redwood (02-25-2012)
Old 02-23-2012, 12:06 PM   #8
Member
 
Pipecommandor's Avatar
 
Join Date: Apr 2011
Location: Kentucky
Posts: 50

View Pipecommandor's Photo Album My Photos
Default

Two toilets on the same wet vent ???
Pipecommandor is offline   Reply With Quote
Old 02-23-2012, 07:11 PM   #9
Senior Member
 
mccmech's Avatar
 
Join Date: Jul 2011
Location: South Jersey
Posts: 523

View mccmech's Photo Album My Photos
Default

Quote:
Originally Posted by Pipecommandor View Post
Two toilets on the same wet vent ???
Who said it's a wet vent? OP only stated that they share a vent, that doesn't mean it's a wet vent.
__________________
"If everybody says you're wrong, you just might want to reconsider".
mccmech is offline   Reply With Quote
The Following User Says Thank You to mccmech For This Useful Post:
jeffreyplumber (02-27-2012)
Old 02-25-2012, 02:16 AM   #10
Senior Member
 
Join Date: Oct 2011
Location: cleveland ohio
Posts: 114

View walker426's Photo Album My Photos
Default

Quote:
Originally Posted by xyleman
I believe that toto wants a double wye as to san t in their lit.
Technically there is no correct way to vent a floor mounted toilet this is why a double wye works best no hydraulic jump
walker426 is offline   Reply With Quote
The Following 4 Users Say Thank You to walker426 For This Useful Post:
mccmech (02-25-2012), Redwood (02-25-2012), TPWinc (02-26-2012), xyleman (02-25-2012)
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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Wants his tip back rizob General Plumbing Discussion 50 01-01-2012 10:39 AM
Artist tattoo on woman's back is taken 'back' by pile of crap, flies LMFAO!!!! DUNBAR PLUMBING Off Topic 3 12-02-2011 07:13 PM
Flooded Back to back to cell revenge General Plumbing Discussion 10 08-06-2011 10:48 PM
Back to back toilets PlumbRob7 Plumbing Code 14 02-15-2011 01:09 AM


All times are GMT -4. The time now is 09:35 PM.


Copyright 2000-2014 Escalate Media LP. All Rights Reserved
Our Pro Sites Network
ContractorTalk.com | DrywallTalk.com | ElectricianTalk.com | HVACSite.com | PaintTalk.com | RoofingTalk.com

Search Engine Optimization by vBSEO 3.6.1