(206) 949-5683, Top Rated Plumber, Seattle
Results 1 to 6 of 6

Thread: Size of neoprene gasket on CI drain

  1. #1
    DIY Senior Member TJanak's Avatar
    Join Date
    Sep 2009
    Location
    South TX
    Posts
    152

    Default Size of neoprene gasket on CI drain

    I have a washing machine drain that exits the side of the slab as cast iron. There is a neoprene gasket with a female threaded adapter into the gasket. The gasket is a Ty Seal 2 SV. Does this mean this is 2" CI pipe or a 2" hub? The OD of the CI around the gasket was about 3.5". Honestly the pipe ID looks like 1.5" and I was hoping it was 2" since I need to do some repairs and all new work needs to be 2" from what I've read.

    What's interesting is the washer standpipe is 1.5" galvanized leaded into what appears to be 2" CI above the slab. The CI was ~2.3" OD so I figured that was 2".

    The female threads at the oustide of the house slab had a 1.5" thread to barb fitting with 1.5" poly pipe.

    Thanks!Name:  DSCN3309.jpg
Views: 138
Size:  48.7 KB
    Travis

    When I need a precise measurement of something I often use the highly technical method of eyeballing it.

  2. #2
    Retired Defense Industry Engineer jadnashua's Avatar
    Join Date
    Sep 2004
    Location
    New England
    Posts
    21,381

    Default

    Drain pipe is typically measured ID, so a 2" pipe should measure 2" on the ID. Wall thickness is fairly consistent with plastics, but not as much with CI. So a 2" pipe is normally around 2.5" OD or so, give or take a little.
    Jim DeBruycker
    Important note - I'm not a pro
    Retired Defense Industry Engineer; Schluter 2.5-day Workshop Completed 2013, 2014

  3. #3
    DIY Senior Member TJanak's Avatar
    Join Date
    Sep 2009
    Location
    South TX
    Posts
    152

    Default

    Jim, I can't measure the inside of the pipe where it exits the slab so I'm trying to determine its ID based on the neoprene gasket saying Ty Seal 2 SV. The pipe is full of crud so it's hard to guess the ID. Probably need to get it cleaned/augered.

    After looking around, is there even such a thing as 1.5" CI or would it have to be 2"?

    After looking some more, looks like a threaded ferrule for 2" CI pipe would have a 1.5" tap size. Which is what I have.
    Last edited by TJanak; 11-04-2011 at 01:16 PM.
    Travis

    When I need a precise measurement of something I often use the highly technical method of eyeballing it.

  4. #4
    In the Trades Tom Sawyer's Avatar
    Join Date
    Nov 2010
    Location
    Maine
    Posts
    2,935

    Default

    It's 2" SV cast iron. There is no 1 1/2 CI
    [B]No, plumbing ain't rocket science. Unlike rocket science, plumbing requires a license[B]

  5. #5
    DIY Senior Member TJanak's Avatar
    Join Date
    Sep 2009
    Location
    South TX
    Posts
    152

    Default

    Thanks Tom.

    Can I pry out the threaded ferrule or do I need to cut it to get it out? The threads are pretty much gone so I was going to put 2" pvc into the Ty seal.
    Travis

    When I need a precise measurement of something I often use the highly technical method of eyeballing it.

  6. #6
    Illinois Licensed Plumber SewerRatz's Avatar
    Join Date
    Nov 2008
    Location
    Chicago, IL
    Posts
    1,705

    Default

    Quote Originally Posted by Tom Sawyer View Post
    It's 2" SV cast iron. There is no 1 1/2 CI
    Tom there is 1 1/2 Cast Iron, but in No -Hub, there is no service weight 1 1/2" cast iron though.

Similar Threads

  1. Re-use neoprene gasket?
    By littlebrook in forum Toilet Forum discussions
    Replies: 2
    Last Post: 04-02-2009, 11:49 AM
  2. replacing neoprene gasket
    By littlebrook in forum Toilet Forum discussions
    Replies: 2
    Last Post: 11-30-2008, 12:03 PM
  3. Replacing rear-outlet neoprene gasket
    By littlebrook in forum Toilet Forum discussions
    Replies: 2
    Last Post: 08-28-2008, 10:23 AM
  4. ABS into cast iron hub with neoprene gasket HELP
    By filipo in forum Plumbing Forum, Professional & DIY Advice, Tips & Tricks
    Replies: 9
    Last Post: 09-05-2006, 05:48 AM
  5. Neoprene gasket question, wall mount
    By Joerg in forum Toilet Forum discussions
    Replies: 1
    Last Post: 01-23-2006, 04:13 PM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •