Installing drain pipes from a sink to the wall outlet provided is a simple process and can be done by the individual who likes to save money. Make sure the beveled sides of washers face the threaded portion of the pipes. Assemble a new P-trap kit. If you've ever had to clear a clog from a sink drain, you're likely already familiar with the drain trap assembly that forms the transition from the sink to the home's branch drain system. Use the tool to hold the basin in place while you remove the nut underneath. Turn off the water, and clear the area under the sink to prepare to replace your current drain pipes. If the coupling seems snug but the leak continues, unscrew the coupling to detach the joint. Full Wall Shelves Closets. If you do, you need only screw a CPVC adapter into each galvanized fitting and then assemble the replacement pipes by gluing them with CPVC cement. You may have to use an adapter if the sink tailpiece is only 1 1 /4 inches in diameter. To replace an under-sink elbow, otherwise known as a P-trap, you loosen the connecting nuts using your hand or a pair of locking pliers. Make a hole in the wall large enough to expose the pipes you want to replace. The sink drain pipe is connected to the household plumbing system. How To Replace A Sink Trap The. If there is a leak underneath the bathroom sink, there is probably a problem with the supply connector. Turn off the taps, but also close the valves under the sink. First turn every water supplying valves off by hands or wrench, usually, the “shut down switch” attached under the sink water supplying line. Hold a tape measure against the end of the waste pipe so “0” lines up with the inside wall of the pipe. In this video we’ll be cutting out a rotted waste nipple and remove old galvanized pipe. Loosen and remove the couplings on either end of the P-trap. Tailpiece p trap and extension pipe. You probably haven t spent a lot of time thinking about your bathroom sink drain pipe. The only difference is the material of which they are made. You probably haven't spent a lot of time thinking about your bathroom sink drain pipe. P-traps are designed to hold water at all times to prevent sewer gasses from entering the home from the drain. Remove Drain Pipe Under Bathroom Sink Artcrea. Even if you've never touched a pipe in your life, you can repair and replace the drain pipes on a bathroom sink. No washers are required here. An under-the-sink pedestal cabinet is easy to install. © Copyright 2020 Hearst Communications, Inc. Once this is done, clean up any extra caulk and let everything dry for at least 24 hours. Shut off the water to the sink. Also, wear a face mask to keep yourself from inhaling any mold spores or other airborne contaminants that might be present in the trapNext, you need to make sure the water is turned off completely. Let all water drain into the bucket. Pull the tape measure horizontally across the pipe to the inside wall on the opposite side. Squirt or spread plumber's putty or another approved sink sealant over the threads. A carved-out niche allows the vanity cabinet to slide beneath the sink. Don t be intimidated by the task and call a plumber because as far as diy jobs go it s one of the least challenging. Rinse with hot, soapy water. Center the gasket directly over the sink's drain hole before pressing in place. Chris Deziel has a bachelor's degree in physics and a master's degree in humanities. Tighten loose couplings to eliminate the moisture. Screw the galvanized half of a dielectric union onto each nipple. Place a bucket beneath the J-bend pipe. Step 1 Place the small bucket under the P-trap and remove the clean-out plug. You open up the doors to take a closer look and you notice a rust stain running down from where the waste pipe exits the cabinet. The drain trap—sometimes called the P-trap due to its distinctive shape—is the curved section of pipe that you see immediately under the sink. 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