90 Degree Turn In Horizontal 3" Main Drain - Plumbing - DIY Home Improvement | DIYChatroom

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


Thread Tools Display Modes
Old 03-14-2009, 02:40 PM   #1
Join Date: Feb 2009
Posts: 24
Rewards Points: 10

90 degree turn in horizontal 3" main drain

I hooked up my main 3" horizontal drain line so that the downhill end does a "short/small" 90 degree turn slants down again slightly for 2 feet and takes a wye to straight down. I didn't think much of it until I ran across the 1.5" "longer" 90 degree and was wondering if maybe it would be prudent to find a 3" "longer" 90 degree turn and use that in place of my short one. Is it worth it to try and switch to the longer more gradual turn or am I wondering about such a small difference. The 3" pipe drains a kitchen sink, dishwasher and washing machine.


wildbilly is offline   Reply With Quote
Old 03-14-2009, 03:29 PM   #2
Plumbing Contractor
JDC's Avatar
Join Date: Mar 2008
Location: Cincinnati, OH
Posts: 398
Rewards Points: 262

Short sweep 90s are not supposed to be used horizontally. The long sweep you saw is the minimum requirement. A better option, if room allows, is to use a tee-wye combo fitting (a wye and street 45) to make the turn. Put a fitting female adapter on the end with a clean out plug for future access.


JDC is offline   Reply With Quote
Old 03-14-2009, 05:52 PM   #3
Join Date: Feb 2009
Posts: 24
Rewards Points: 10

Yeah, that makes sense JDC; Thanks!

I presume to put the arm of the wye upstream so that the cleanout plug would not be right on the end (of the flow) but on the side.
wildbilly 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
Sewer Drain Issues allenzachary Plumbing 20 03-03-2009 07:09 PM
Washer Drain Help Needed PatDaddy Plumbing 4 05-05-2008 10:35 PM
turn main panel into a sub panel? tikicarver Electrical 2 01-24-2008 07:37 AM
How to outline the 1 1/2" PVC drain froddan Plumbing 6 07-24-2007 03:15 AM
Main valve not working. Water won't turn on! skellies Plumbing 1 10-31-2006 02:17 AM

Top of Page | View New Posts


Search Engine Friendly URLs by vBSEO 3.6.1