Understanding how bathroom sink plumbing works can make it easier to identify, and potentially fix, small problems before they get out of hand. The basic parts of a bathroom sink include:
Fixture holes. Your bathroom sink has either one or two fixture holes. Some of these have separate faucet handles from the spout, while others are integrated into the spout.
Supply tubes. From the faucet handles, flexible supply tubes carry water from shutoff valves in the wall to threaded tailpieces at the base of your faucet.
Pop-up stopper. The drainpipe that runs through your bathroom sink is fitted with a pop-up stopper that you can raise or lower by pulling up or pushing down on a knob just behind the faucet. That knob is fastened to a connecting bar that connects to a pivot rod-and-ball assembly.
Sink drain. The sink drain is equipped with a flange that is sealed to the sinkhole with plumber’s putty.
Flange. The flange in the sink drain is screwed into the drain body, which is tightened to the underside of the sink bowl with a locknut.
Tailpiece. The tailpiece attaches to a drain trap with slip-joint couplings.
Sink Trap. Your sink is fitted with a sink trap that is filled with water so that sewer gases can’t escape into your home
Maplewood Plumbing and Sewer has been cleaning bathroom sink drains in St. Louis homes for more than 30 years. Contact us today at 314-645-6350 or here for more information or to request a bid.
We are also experts in hot water heater installation, tankless water heater installation, garbage disposal repair and replacement, bathroom plumbing and residential plumbing. Give us a call at 314-645-6350 or fill out the contact form here for more information or to request a bid.