So your basic lavatory pop-up waste assembly is not so mysterious after all. Let’s take a look at how a pup-up assembly works.

A simple invention designed to keep the water inside of your lavatory to shave or perhaps wash your face. Most of the ones I have installed are similar in design with the exception being that the material was either plastic or solid brass construction.

The one featured in the video is of solid brass construction which has always been a reliable unit, fact is, I prefer brass pop-up’s to the plastic versions.

Simply put they just work better and last longer. As you can see it’s a pretty simple concept, pull up on the lift rod and the stopper goes down. Push down on the lift rod and the stopper goes back up.

For me, the most important part of the installation is that in addition to placing a ring of plumbers putty around the chrome flange before you place it into the sink, I also place a ring of putty on the beveled washer that seals the bottom of the pop-up against the bottom of the sink.

This is one step that although in theory is not required, can save you from having to disassemble the unit and doing it all over again. Trust me I speak from experience, if I have to make a return trip for a nuisance leak, it costs me money! Not to mention the inconvenience to my customer.

The other point I’d like to make is that when I set up my lift rods, I always make sure my stopper ends up being in the fully open position when my lift rod is pushed completely down.

I often see that when the lift rod is fully down, the stopper is only partially up which causes the water to pool in the sink which is just a nuisance.

Before you set your rods, make sure the stopper is in the fully up position and you can’t miss.

Check out the video and if there is something I missed, please drop me a line at info@bobsplumbingvideos.com.

HAPPY PLUMBING!