toilet pipe

12-21-2012, 02:32 PM	#1
tanpat Newbie   Join Date: Dec 2012 Posts: 4	toilet pipe hello, i am installing my toilet and the ground pipe is 3 7/8 inch and all i can find is 3 or 4 inch flange's. from what i hear the flange is suppose to go inside the pipe so the 4 inch is too big and the 3 is too small. anybody come across this before?

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12-21-2012, 02:51 PM	#2
md2lgyk Member   Join Date: Jan 2009 Location: WV Posts: 2,127	toilet pipe A 4-inch flange should work just fine. Last edited by md2lgyk; 12-21-2012 at 02:53 PM.

12-21-2012, 02:53 PM	#3
TheEplumber call me E     Join Date: Jul 2010 Location: Idaho Posts: 3,892	toilet pipe Quote: Originally Posted by tanpat hello, i am installing my toilet and the ground pipe is 3 7/8 inch and all i can find is 3 or 4 inch flange's. from what i hear the flange is suppose to go inside the pipe so the 4 inch is too big and the 3 is too small. anybody come across this before? Seems to be an odd size- can you upload a picture? What is the pipe made of-plastic, cast iron, lead, copper? __________________ When posting in forums, letting us know your location will help others give better feedback/advice/solutions to your questions

12-21-2012, 02:57 PM	#4
tanpat Newbie   Join Date: Dec 2012 Posts: 4	toilet pipe Quote: Originally Posted by TheEplumber Seems to be an odd size- can you upload a picture? What is the pipe made of-plastic, cast iron, lead, copper? made of plastic

12-21-2012, 03:01 PM	#5
tanpat Newbie   Join Date: Dec 2012 Posts: 4	toilet pipe Quote: Originally Posted by md2lgyk A 4-inch flange should work just fine. but how do i get a 4inch flange into the 3 7/8 inch pipe? i also thought maybe putting the flange on the outside of the pipe but wont it leak?

12-21-2012, 03:23 PM	#6
oh'mike Super Moderator   Join Date: Sep 2009 Location: Kane county,Illinois Posts: 16,316	toilet pipe You will be priming and gluing this---outside flanges are always the first choice There are several 'plastics' used for pipe--all use a special glue (solvent) describe the pipe,please--- __________________ New members: Adding your location to your profile helps in many ways.--M--

12-21-2012, 06:41 PM	#7
ben's plumbing Member   Join Date: Oct 2011 Location: pa Posts: 3,199	toilet pipe you should be able to glue a 3" hub closet flange into the 4" pipe..ben sr

12-21-2012, 07:35 PM	#8
jagans Roofmaster   Join Date: Oct 2012 Location: Maryland Posts: 2,780	toilet pipe Maybe the pipe is not DWV? __________________ " A lot of men build things, and a lot of things fall down "

12-21-2012, 08:33 PM	#9
ben's plumbing Member   Join Date: Oct 2011 Location: pa Posts: 3,199	toilet pipe Quote: Originally Posted by jagans Maybe the pipe is not DWV? it really should not matter if it plastic and measured 3 7/8 id a 3"hub flange measures 3 7/8 od....good point though...ben sr

12-21-2012, 08:43 PM	#10
TheEplumber call me E     Join Date: Jul 2010 Location: Idaho Posts: 3,892	toilet pipe Quote: Originally Posted by ben's plumbing it really should not matter if it plastic and measured 3 7/8 id a 3"hub flange measures 3 7/8 od....good point though...ben sr I thought you guys were nuts - I could have sworn I read 3 7/8 O.D. somewhere __________________ When posting in forums, letting us know your location will help others give better feedback/advice/solutions to your questions

12-21-2012, 09:00 PM	#11
ben's plumbing Member   Join Date: Oct 2011 Location: pa Posts: 3,199	toilet pipe Quote: Originally Posted by TheEplumber I thought you guys were nuts - I could have sworn I read 3 7/8 O.D. somewhere no your not nuts ..well i really can't say for sure don't know you that well...but 4"plastic abs measures 3 7/8 id and a 3"hub closet flange will glue right into it..we do it all the time... of course this is pvc same Attached Thumbnails

12-21-2012, 09:05 PM	#12
TheEplumber call me E     Join Date: Jul 2010 Location: Idaho Posts: 3,892	toilet pipe Quote: Originally Posted by ben's plumbing no your not nuts ..well i really can't say for sure don't know you that well...but 4"plastic abs measures 3 7/8 id and a 3"hub closet flange will glue right into it..we do it all the time... of course this is pvc same I didn't say I was nuts- I was questioning you're sanity because I read too much into the thread Do you use 4x3 90's or pipe the whole line in 4" __________________ When posting in forums, letting us know your location will help others give better feedback/advice/solutions to your questions

12-21-2012, 09:11 PM	#13
ben's plumbing Member   Join Date: Oct 2011 Location: pa Posts: 3,199	toilet pipe Quote: Originally Posted by TheEplumber I didn't say I was nuts- I was questioning you're sanity because I read too much into the thread Do you use 4x3 90's or pipe the whole line in 4" 4" whole line because after tile we cut off 4" flush to tile glue and hammer drill 3"hub flange into 4" Last edited by ben's plumbing; 12-21-2012 at 09:13 PM.

12-22-2012, 11:17 AM	#14
tanpat Newbie   Join Date: Dec 2012 Posts: 4	toilet pipe It is a 4" abs riser in concrete. Is there a flange gasket that goes inside or do I have to bust concrete to get on outside gasket?

12-22-2012, 11:28 AM	#15
TheEplumber call me E     Join Date: Jul 2010 Location: Idaho Posts: 3,892	toilet pipe Quote: Originally Posted by tanpat It is a 4" abs riser in concrete. Is there a flange gasket that goes inside or do I have to bust concrete to get on outside gasket? Your answer has been posted already- please reread __________________ When posting in forums, letting us know your location will help others give better feedback/advice/solutions to your questions