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Kitchen Plumbing Renovation Project: Install A Disposal

by Clare Kaufman

Repair Home Columnist

If you're planning a kitchen renovation, you may want to throw in the kitchen sink--or at least a new garbage disposal. Installing a new garbage disposal is a plumbing project within reach for most homeowners. Today's disposals make short work of kitchen cleanup, turning the plumbing under the sink into a convenient garbage chute.

A brand new disposal can take your kitchen plumbing to the next level. If you already have a dedicated electrical outlet under the sink, this renovation project is fairly straightforward. If not, you may want to call in an electrical contractor to put in the necessary wiring first.

A Kitchen Plumbing Renovation

  1. Remove the existing kitchen sink strainer. Place a bucket under the sink, beneath the "J" trap. Use a pipe wrench to loosen the slip nuts and remove the "J," dumping the water into the bucket.
  2. Remove the strainer and use a putty knife to scrape away any remaining plumbing putty and debris.
  3. Next, install the sink flange of the disposal unit. Apply plumbing putty around the drain, then set the sink flange into it and press down.
  4. From beneath the kitchen sink, attach the mounting ring and gasket and slide them up the flange. Look for a snap ring that you can connect to the flange to secure the ring and gasket.
  5. Tighten the mounting bolts to install the unit, tightening all three evenly. Wipe away any excess plumbing putty from the sink bowl.
  6. With the disposal installed, you're ready to attach the electrical wiring. If you're unfamiliar with electrical systems, consult an electrical contractor to help with this part of the renovation project.
  7. When the wiring is in place, you're ready to install the disposal. Fit the unit into the mounting assembly, turning it to lock in place.
  8. Connect the plumbing pipes. If the "J" trap is no longer aligned, you may have to install some PVC plumbing pipes or call a plumbing contractor to help.
  9. Once you've connected the plumbing and tightened the locknuts, tighten the rotating collar on the mounting assembly to lock the disposal in place.
  10. Check for leaks, inspecting seals and locknuts.

If the plumbing is sound, the disposal is ready for its test run. Run a steady stream of water, flip the switch, and celebrate the success of your kitchen plumbing renovation project.



Do It Yourself.com


About the Author

Clare Kaufman works as a writer and editor for an online media company. She has completed a graduate degree in English.