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Sink Drain Installation

887 views 5 replies 4 participants last post by  Ghostmaker 
#1 ·
Hi all,

I recently had a new porcelain sink installed. Unfortunately, the folks installing it did not re-install the drain, so I am left to complete this task. The components I am dealing with can be seen here.

Being completely new to plumbing, I did some googling and watched a number of YouTube videos on the topic. Here's what I'm struggling with:

  1. Should I apply plumber's putty, thread seal tape, or both to the pipes?
    - Both of the videos I saw on YouTube suggested to apply both. When I picked up some putty at HomeDepot, they suggested I don't use it, because according to them, it is fairly permanent. Help?
    -- If either one is to be applied, where along the pipe(s) do I apply it? I have marked up one of the pictures to indicate where I would apply the thread seal tape. Would appreciate any feedback.
  2. How do I prevent water from leaking into the sink?
    --> As you can see in the second picture at the link I posted above, my sink has a hole. Unless my senses are failing me, if I install the drain, water is going to end up shooting into this hole from the hole in the drain pipe (see red highlighted area in the picture of the drain pipe). Can anybody explain the function of this hole to me and what will happen here?

Thanks for your help!
 
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#2 ·
PLumbing putty should only be used to seal the drain plug at the top of your sink to the sink. Make a snake and apply it around the flange then squash it between the flange and the sink itself. The putty is non hardening and not staining. Any threads you have you should use pipe dope.
 
#4 ·
As shown here? And how about the pipe dope / thread seal tape - should it be applied as shown here?

Sky.... Note that your sink has an overflow drain and a channel that will feed right into that hole in the drain pipe that you are concerned about....

You will have a rubber washer that makes a seal between the drain and the bottom of the sink that isolates that hole you are concerned about...

Best
That makes sense...I was thinking about it the wrong way around (i.e., that the water going down the drain would come out the side of the drain pipe and get stuck in the inside of the sink). Thanks for clearing that up!
 
#3 ·
Sky.... Note that your sink has an overflow drain and a channel that will feed right into that hole in the drain pipe that you are concerned about....

You will have a rubber washer that makes a seal between the drain and the bottom of the sink that isolates that hole you are concerned about...

Best
 
#5 ·
You are planning on replacing the faucet, right?
The new faucet will have a whole new drain assembly in the box.
Yours is missing the flanged part that goes inside the sink, I would want a new rubber tapered gasket for the under side of the sink.
I'd also get rid of that whole old metal drains and replace them with PVC. The whole thing would only cost about $5.00.
 
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