Need Help With Installing Insinkerator Evolution Garbage Disposal

Discussion in 'Plumbing Forum, Professional & DIY Advice' started by cai24, Feb 10, 2020.

  1. cai24

    cai24 New Member

    Mar 24, 2018
    New Jersey
    I am trying to install an Insinkerator Evolution Garbage Disposal, and I am having a few issues. I have a farmhouse sink, and I had to order an extended flange to make it work. I used the 1 1/2" screws provided, but I realized later that the instructions say to use 1 1/8" screws for sinks larger than 3/8". I believe this applies to mine, but I don't understand the reasoning. Should I swap them out, or are they okay as is? I don't know if the extended flange impacts this at all.

    I am also having trouble aligning the trap to the elbow coming out of the garbage disposal. I need the trap to come over about 1.5" to make the connection. I'm not sure how to fix this, as it seems like the angle is off. I know that I will need a tail piece extension once everything is properly aligned. I appreciate any advice/suggestions!


  2. Reach4

    Reach4 Well-Known Member

    Sep 25, 2013
  3. Sponsor

    Sponsor Paid Advertisement

  4. jadnashua

    jadnashua Retired Defense Industry Engineer xxx

    Sep 2, 2004
    Retired Systems engineer for defense industry.
    New England
    You might find a trap that has a bit more reach to it...they are not all the same. The fewer fittings you use, the less likely for a leak or clogs. You might be able to rotate the disposer a little to help with your angles and projection. Same with the can be turned at any angle and still work fine.

    From the trap arm, ensure your pipe slopes down at least 1/4" per foot.

    Depending on the shape of the drain and the bottom of the sink, a longer screw might make it harder to tighten things up. Can't tell without being there.
Similar Threads: Need Help
Forum Title Date
Plumbing Forum, Professional & DIY Advice Need Help Laundry washer drain connection Sep 16, 2020
Plumbing Forum, Professional & DIY Advice How to take out mixer cartridge - urgent help needed! Aug 29, 2020
Plumbing Forum, Professional & DIY Advice Need help with toilet flange Aug 25, 2020
Plumbing Forum, Professional & DIY Advice Need Fire Pit Help - Gas Stopping at Control Valve Aug 22, 2020
Plumbing Forum, Professional & DIY Advice Need professional septic system help Aug 20, 2020

Share This Page