Remove Garbage Disposal Flange – 6 Steps Mentioned

A garbage disposal is super handy when preparing meals or cleaning up in the kitchen. But like any appliance, it needs maintenance or replacement over time. One important task is removing the garbage disposal flange, which connects the disposal to the sink drain. If you’re unsure how to do it, don’t worry! Here’s a simple guide on how to remove the garbage disposal flange step by step.

The article explains the time-saving steps on how to take out the old garbage disposal sink flange. In addition, you will know some significant tips to carry on the task as a DIY project. Indeed, it saves you a lot of money. 

What is a Garbage Disposal Sink Flange?

A garbage disposal flange acts as a mounting ring to install the disposal unit to the sink drain under the kitchen sink cabinet. It is like a collar containing a screw mechanism to hold both the sink and the appliance using the plumber’s putty. 

You must know that it is made of stainless steel material giving a perfect grip to garbage disposal, preventing leaks and the like. In addition, the disposal flange is designed to be sloped so that the water flows down the drain smoothly and never faces any hindrances. 

Are All Garbage Disposal Flanges the Same Size?

If you think that all garbage disposal flanges are the same size? The simple answer is that it is not. Typically, many standard sinks make up the regular 3 ½ inches flange dimensions and ensure a snug garbage disposal fit. 

But, when there are thicker sinks, like farmhouse or fireclay, the dimensions of the flange opening change. In this regard, you must find disposal flanges of  ¾ or 1 ¾ inches. 

How to Take off Garbage Disposal Flange?

No matter what your garbage disposal is in need of, that is upgradation, repair, and maintenance, it is not without removing the garbage disposal flange. Being into constant garbage disposal troubleshooting, it is not at all difficult for me to replace the flange. If you are new to this field, the steps, the right equipment, and a systematic approach help you very much without damaging the sink. 

1. Shut off Power and Water from the Garbage Disposal

The first thing that comes first is to turn off the garbage disposal, which is not only from the power supply but from the water supply too. Doing so will prevent you from shocks, and injuries, and at the same time it keeps the area from flooding. 

What you must do is turn off the switch from the main outlet and the circuit breaker’s box. Remember, recheck the disposal by turning it on once you flip the switch toward the offside so that you remain safe.

2. Remove the Garbage Disposal

The next step is taking off the disposal unit. In this regard, start with disconnecting the drainpipe and a dishwasher connection from the garbage disposal. After that, give a twist to the appliance in a counterclockwise direction using a screwdriver. Hence, the garbage disposal is removed.

3. Unscrew the Three Screws

As you know, a mounting assembly, another name for a disposal flange is used to connect the sink and disposal unit using three screws. What you must do is unscrew them using a screwdriver to replace the disposal flange. After that, detach the flange slowly after confirming it has not accumulated with rust. 

4. Treat the Rusty Flange

Typically, the garbage disposal flange gets separated when you unscrew the three screws. But, if it is not, you must avoid exerting force to do the job and look for substitute methods to treat the rusty flange first and then remove it. One such is the treatment of the WD40, spray it to soften the rust and grab slip-joint pliers to turn the flange after waiting for a few minutes. 

5. Pry Flange with Screwdriver

The disposal flange contains a top ring to be seated underneath the sink or drain. Hence removal of the flange includes removing the top ring. For this, you must use a flat screwdriver to pry it but in short increments. Doing so will prevent the flange from bending and making it reusable.  

6. Remove Old Plumber’s Putty

The next step is to clean the putty remains after removing the old rusty disposal flange. The leftover putty on the surface will disturb the sitting of the new one, what you have to do is scrap the putty using a flat scraper. So, this way you can take out the flange easily to fulfill the purpose for which you detach it, that garbage disposal repairing or installing a new unit. 

Remove Garbage Disposal Sink Flange – Essential Tips

  • Detach the garbage disposal before removing the flange, for it decreases the underneath weight and makes the process convenient. 
  • Clean the putty from the flange when you intend to reuse it. 
  • Do not use an old/rusty flange, get a new one with a brand-new garbage disposal. 
  • If the garbage disposal demands repair, you must reuse the old flange. 
  • You must reuse the flange if it gets loose from its connection. 

Bottom Line

As the machine is prone to usual wear and tear, so are the components. There are many causes, such as leaking flange, appliance repair, clog clearance, or maintenance that make you replace/remove the garbage disposal flange. In this regard, the article guides on the time-saving steps to experience the combination of a workable disposal unit with ever-ready installation parts.

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