Installing A Push Drain In Bathroom Sink

A push drain, also known as a pop-up drain, offers a sleek, modern alternative to traditional lift-and-turn drains in bathroom sinks. Installation is generally straightforward and can be accomplished with basic plumbing tools. This guide provides a step-by-step process for installing a new push drain assembly.

Required Tools and Materials: Before beginning the installation, gather the necessary tools and materials. These typically include:

New push drain assembly (ensure compatibility with the sink)
Adjustable wrench
Basin wrench
Plumber's putty
Channel-lock pliers
Phillips screwdriver
Flathead screwdriver (optional)
Bucket or towels (for catching water)
Flashlight (optional, for better visibility under the sink)

Preparing the Workspace: Clear the area under the sink to allow easy access to the plumbing. Place a bucket or towels under the P-trap to catch any remaining water. Turn off the water supply valves for both hot and cold water to the sink.

Removing the Old Drain Assembly: Loosen and remove the nut connecting the P-trap to the drain tailpiece. Use a basin wrench to loosen and remove the large nut securing the old drain flange to the sink. Remove the old drain assembly, including the pop-up lever and linkage.

Cleaning the Sink Drain Opening: Thoroughly clean the sink drain opening, removing any old putty or sealant. This ensures a proper seal for the new drain assembly. A clean surface allows the new putty to adhere correctly and prevent leaks.

Applying Plumber's Putty: Roll a rope of plumber's putty, approximately ½ inch thick, and place it around the underside of the new drain flange. Press the flange firmly onto the sink drain opening, ensuring the putty creates a watertight seal. Excess putty will squeeze out from under the flange. Remove this excess with a finger or a damp cloth, creating a neat finish.

Securing the Drain Flange: From under the sink, tighten the nut onto the drain flange using the basin wrench. Do not overtighten, as this could damage the sink or the drain assembly. Ensure the flange is flush with the sink surface.

Installing the Drain Body: Insert the drain body into the drain flange from above the sink. Ensure the rubber gasket is properly seated within the drain flange. Hand-tighten the nut connecting the drain body to the drain flange from below the sink.

Connecting the Pop-Up Assembly: Depending on the specific drain model, connect the pop-up assembly to the drain body. This usually involves inserting the pop-up rod into the drain body and securing it with a clip or set screw. Follow the manufacturer’s instructions carefully, as this process can vary slightly between models.

Attaching the Clevis Strap and Lift Rod: Connect the clevis strap to the lift rod and the pop-up rod. Adjust the clevis strap to ensure proper operation of the pop-up mechanism. This allows the push button to activate the drain stopper.

Connecting the P-Trap: Reattach the P-trap to the drain tailpiece, tightening the nut securely. Ensure the P-trap is properly aligned to avoid leaks. Tighten the nut by hand and then give it a slight turn with the wrench to ensure a secure connection.

Testing the Installation: Turn the water supply valves back on. Check for leaks around the drain flange, the P-trap connections, and the drain body. Test the push drain functionality by pressing the button to close and open the drain. Observe the drain for proper sealing and drainage.

Addressing Leaks: If any leaks are detected, tighten the corresponding connections. If the leak persists, disassemble the leaking section, inspect for damage or improper installation, and reassemble, ensuring proper alignment and tightening. In cases of persistent leaks, consider replacing the affected components.

Final Adjustments: Make any necessary adjustments to the clevis strap to fine-tune the pop-up mechanism. Ensure the drain stopper seals completely when closed and opens fully when pushed.