How To Plumb A Double Kitchen Sink With Disposal And Dishwasher?

You don’t need a professional for every small task even you do have enough budget. If you know how to plumb a double kitchen sink with disposal and dishwasher, you can do it yourself too.

Ever given your heart and soul to keeping your kitchen tiptop? So, you know the struggle.

Let’s get real, one of the most gruesome tasks in your household has to be getting free of food wastes.

Touching discarded food bits is simply a big ‘NO,’ no matter what your age. But one way to surpass such disgust is to dodge the sink from clogging.

To put your dreadful days behind, here’s a nice article on the double sink with garbage disposal plumbing.

Plumbing Double Kitchen Sink With Disposal & Dishwasher

how to plumb a double kitchen sink with disposal and dishwasher

You’re in luck if your kitchen already has a garbage disposal embedded in its system.

The procedure of connecting the dishwasher’s drain is relatively more straightforward than the ones where you have to install the garbage disposal separately.

These are designed with a disposal outlet, so the entire plumbing system is synchronized well.

So, keep reading to know how to plumb a double kitchen with a dishwasher and disposal.

  1. Turn Off the Water Supply:

Before we start the entire process, you must shut off the water supply entirely, so your kitchen doesn’t flood later on, and the complete process keeps you dry.

  1. Manage The Loop

Utilize the dishwasher’s drain pipe to loop it in a substantially high station.

We emphasize the loop being at a higher distance as that would eradicate any chances of the remaining water in the sink or dishwasher from rolling down.

When the loop is at a greater distance, the build-up of pressure shuts down, preventing the water from flowing back into the dishwasher.

Moreover, when the twist isn’t stationed at a decent height, it could lead to moisture and mold build-up, which will leak into the water. Ultimately, this dirty water would also wash your dishes, and you don’t want that.

  1. Secure The Loop

At this point, only tying a high loop won’t hold on during the complete process. Thus, you will have to secure this high loop using a bracket or a clamp.

The safest place to ensure the knots would be beneath the counters or against the wall’s rear ends around the corner. Squeeze the loop between the wall and the counter.

  1. Attach Disposal Inlet

Now you must fasten the disposal inlet to the end of the drainpipe.

  1. Clamp The Pipes

Utilizing a hose clamp, compression washer, or nut and attach the pipe to the disposal channel. All these fastener tools should be included in the installation accessories that arrive with your dishwasher.

  1. Turn On the Water Supply

Now that everything is safely secured, you can switch on the water supply. Give your dishwasher a run to locate any leakage. If you notice none, you’re good to go.

On the other hand, if you detect any leakage, tighten the compression nuts to get the job done.

And voila! You’ve accomplished one of the primary necessities that all double kitchen sinks allow you to. The whole ordeal shouldn’t take you more than an hour at best.

You will find this video useful.

Plumbing A Garbage Disposal in A Double Sink

Even though the methods of plumbing a double sink kitchen might seem more accessible than other home fixes, you must still wonder how to get hold of this tricky little one.

The rules of double sink with garbage disposal plumbing differ in multiple ways when compared to the former.

Thus, here’s our take on how to tackle this misfortune. Stick with us to know how to plumb garbage disposal in a few quick steps.

The tools that you will require for this guide are –

  • Screwdriver
  • Hex Wrench
  • Hammer Plies
  • Hacksaw

Now you know where this is headed. After you’re done gathering all the listed and necessary items for the plumbing it’s time to get down to business! –

  1. Understand The Disposal Parts

Before we begin guiding you on plumbing the kitchen sink with the garbage disposal, let’s clarify some of the pre-requisites.

You must familiarize yourself with the compartments and parts that the removal arrives with.

Furthermore, even before you start the entire installation procedures; make sure that all the components can be assembled where they are supposed to. The fit of each of these parts has to be perfect.

  1. Apply Putty

Get your hands on any fitting plumber putty from nearby local shops and employ it on the flange. Push it down gently and let it assemble accurately. Place the disposal at the collar, so it doesn’t move around.

  1. Install Snap Ring

After the placements are done, it’s time to stack the mounting ring, fiber gasket, and backup flange. Let them glide down gently along the collar and let them rest at the base.

Once that’s done, you can go ahead and install the snap rings. Tighten the screws and clean off the excess putty.

  1. Manage The Electrical Cord

You need to remove the wire seal plate in order to access the electrical cord. There are matching wire colors so that users can coordinate accordingly.

  1. Drain Plug Removal

Utilize a trustee hammer to dispose of the drain plug.

  1. Connect The Garbage Disposal:

Insert the gasket gently to connect it to the drainage. Attach the discharging tube to the discharging outlet with the help of a flange and bolts and align them along the mounting ring.

Utilize three tabs and a wrench to lock the tabs and ridges in place.

  1. Connect Dishwasher:

Before connecting the dishwasher during this stage, ensure that the discharge pile is aligned linearly to the drainage pipes.

Give yourself a big pat on the shoulder because the hard part is done! Even though some may think it’s an inevitably arduous task to follow, the truth is that you can master it in your first go. Impressive, isn’t it?

Is It Possible To Plumb A Double Kitchen Sink?

I have already shown it!

The best part about today’s inventions is that you’re allowed maximum comfort. With dishwasher and garbage disposal units, you can even install them in single units.

Thus, double units are more than welcome to keep the kitchen clean.

However, before installing or purchasing a double unit kitchen sink, make sure that your kitchen has enough space beneath and around to match up to the unit’s fit.

Besides, the drainage pipes have to be installed laterally between the dishwasher and disposal; thus, the precise fit is crucial.

Another critical detail to check before the installation is a proper electrical outlet underneath the sink. The garbage disposal and dishwasher require a seamless connection between them once installed.

This connective wire must trail along above the sink and directly to the electrical outlet attached to the wall.

On the contrary, often, you might come across a few handfuls of sinks that aren’t cooperative with either garbage disposals or dishwashers. Thus, choose your kitchen tools wisely.


Aren’t these the most helpful tips and hacks on how to plumb a double kitchen sink with disposal and dishwasher? We bet!

Our straightforward guides can save you a ton of time and energy every day. Besides, you can finally get rid of the awful experience of touching wet food.

Eww! Say goodbye to such pet peeves, and don’t forget to incorporate these tricks into your daily routine for the best results.

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