Main Drain Line - Plumbing - DIY Home Improvement | DIYChatroom

Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Plumbing


Thread Tools Display Modes
Old 04-05-2006, 11:58 PM   #1
Join Date: Mar 2006
Posts: 3
Rewards Points: 10

Main drain line

I made my bathroom bigger and will be relocating the bath and toilet and sink.I bought a new 1.6 gpf toilet and wondering is 3 inch big enough for the main line that runs to the septic.I made the hole for the flange 5 inch being I planned on 4 inch pvc and the flange is 5 inch outside.I was told by a friend 3 inch is plenty big enough.Now if I bought a flange for 3 inch would it be big enough to go out past my 5 inch hole on the floor surronding it so that I can screw it to the floor or am I stuck using 4 inch now.Now the original cast iron pipe looks to be 4 inch inside and using a fernco fitting would it be fine to go from say 3 inch pvc to the cast or does it have to be the same size for the fitting to seal ok.


lmanwarren is offline   Reply With Quote
Old 04-06-2006, 12:32 AM   #2
Join Date: Aug 2005
Location: Canada
Posts: 430
Rewards Points: 250

The flange for the 3" will fit fine, 3" is good to use and you can adapt it no problem. There's ferncos that are made for that. I'd say you're good to go!


Bonus is offline   Reply With Quote

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
Severed septic drain field line tripower Plumbing 2 08-14-2007 01:05 PM
Problem with Main Line or Not? reibuild Plumbing 2 05-02-2007 10:41 AM
Cutting Concrete for drain line Piney Building & Construction 2 12-01-2006 07:42 PM
Need to move a tub drain to line up with a new tub, is it ok to do this... *PICS* J187 Plumbing 6 05-22-2006 11:13 PM
Main Sewer Line repair Unregistered Plumbing 3 03-14-2005 07:10 AM

Top of Page | View New Posts


Search Engine Friendly URLs by vBSEO 3.6.1