Understanding the process is essential when plumbing in a back to back kitchen sink drain. This will ensure an efficient and properly working drainage system. We will show you how to properly install a kitchen sink drain back-to-back using ABS pipes.

You’ll learn everything you need about plumbing, including the basics and how to install it.

Learn the basics

Understanding the basic principles of a back to back kitchen sink drain is essential before beginning the installation. Two sink drains share a single drain pipe in this configuration. This allows for a more streamlined design and can save space, especially in large kitchens.

Gather the Tools and Materials

Gather the tools and materials needed to begin the installation. These may include ABS pipe, ABS fittings, ABS Cement, a handsaw, pipe cutter, level, measuring tape and pencil. Make sure that all components are compatible with ABS plumbing, and comply with local building codes.

Plan your Drainage System

Before you cut any pipes, plan out the layout of your drainage system. Determine the optimal position of the drain pipes by measuring the distance between sinks. For optimal water flow, you should consider the slope, alignment, and height.

ABS Pipes can be Cut

Cut ABS pipes using a pipe-cutter or handsaw to the lengths required according to your layout. To ensure accurate fitting and alignment, take precise measurements and cut the ABS pipes with a clean, square edge.

Dry Fit the Components

Fit the ABS pipes and fittings to each other dry before gluing them together. This step will allow you to make any adjustments necessary before permanently attaching ABS cement.

Use ABS Cement

Disassemble the components once you’re satisfied with the fit. Apply ABS cement both to the outside and inside of the fittings. For the correct application technique, follow the manufacturer’s instructions. Use only the recommended amount of cement. Excessive use can lead to messy joints, and may compromise the integrity.

Assemble Drainage System

After applying ABS cement to the joints, reassemble all the parts, ensuring they are securely attached. Before the cement has set, use a level to verify the alignment. Make any necessary adjustments. According to the manufacturer’s instructions, give the cement enough time to cure and dry.

Test the System

Test the drainage system to ensure that there are no leaks. Fill both sinks up with water, then release the water simultaneously to simulate normal usage. Check the flow of water and look for signs of leakage at the connection points. If leaks are found, disassemble affected area, add additional cement and reassemble.

Finishing Touches

You can now add the final touches to the system once you are sure that it is functioning correctly and has no leaks. It may be necessary to attach the ABS pipes with appropriate straps or hooks to the cabinet or wall to add additional support.


With the right information and care, installing ABS pipes in a back to back kitchen sink drain is an easy task.

This plumbing project can be completed by following the steps below: understanding the basics; gathering the required tools and materials; planning the drainage system; cutting and fitting ABS pipe, applying ABS Cement, assembling components, testing for leaking and adding finishing details.