Bathroom Sink Drain Assembly and Toilet Supply Line

[Troodon]

I was removing a tiny pedestal sink in our cabin in preparation for new flooring being put down next week. When I started to move the sink, the drain broke. You can see where the crack was, at about the 0.5" mark. The drain goes down into an ABS p-trap.

Are these pretty standard to replace, and am I safe just buying a similar-looking 1 1/4 inch drain assembly? Coming home, I brought back the portion below where it broke, but neglected to measure the drain in the actual sink. It's an older sink, a now-defunct "Olmos" brand from Uruguay.

And here's what was left on the wall.

Lastly, I have a toilet supply question. I need to replace the one below. I'm not sure if a 9-inch would be long enough. Does the stated length of supply lines (like the Fluidmaster Pro ones) include the fittings? What's there is a 12, I think.

 

[Mr tee]

You need a new pop-up which will probably come with a tailpiece that is too short... so, you will also need to get a longer 1 1/4" threaded tailpiece or a slip joint extension (1 1/2" plastic is price performer) and an 1 1/2 X 1 1/4 slip joint washer. As for the supply tube, they don't put a micrometer on those things and the length can vary a tat. If the 12" wasn't ugly that is what I would go with because too short causes unwanted stress. That said, 9" would probably work.

 

[Sponsor]

 

[Troodon]

OK, thanks.

I was hoping something like this would work for the drain, if only because it's all in one package:
Oatey 1 1/4 Drain Assembly

 

[Mr tee]

That will work but probably be too short to reach the trap, so you would need an extension.

 

[Troodon]

Got the drain assembly and the extension this morning. Will try it out on Thursday at the cabin. Thanks again.

 

[Mr tee]

Hope you also have an 1 1/2 X 1 1/4 reducing washer, it will be needed.

 

[Troodon]

Does that reducing washer go between the tailpiece and the extension? If so, it seems the extension came with one:

Or does it go where the extension joins with the ABS p-trap? If that's the case, I was going to re-use the washer that's in there (between the brass-looking nut and the ABS, below). But maybe it's better to get a new one of those instead of re-using it.

Thanks for helping me reduce the number of "Oh $#!t" moments.

 

[Terry]

The reducing slip joint washer fits on the 1.25" tail piece so that the 1.5" extension seals.
If it was a 1.5" kitchen or laundry sink drain, then the standard 1.5" slip joint washer.

 

[Reach4]

A reducing washer would be for when you transition from 1.25 to 1.5.

While a flex tailpiece extension is frowned upon, it is better than having a lot of stress due to your less-adjustable p-trap.

 

[Troodon]

Apologies for ignorance, but I'm a little confused now. The extension I bought is a 1-1/4 inch extension. When you guys say 1.5 inch, what are you referring to? Mr. Tee, I guess I didn't understand what you meant when you said "1 1/2" plastic is price performer." I should have asked, probably.

I measured the existing tailpiece that broke, and it was 1-1/4", so I used that measurement as my guide in buying two items: a drain assembly that includes a 1-1/4" talipiece, and a 1-1/4" slip-joint extension tube in case the tailpiece ends up not being long enough to reach into the trap.

I can go back and return/exchange items if needed.

 

[Reach4]

Your trap looks like it would accept 1.5. The tailpiece and extension would be 1.25. So the reducing washer in your case would be where the tailpiece extension goes into the trap.

shows a 1-1/2 inch washer and a reducing washer on the left, along with a slip joint nut.

 

[Terry]

The lav drain is 1.25"
If your p-trap is also 1.25" then that is what you're working with.

Often on "new" construction, everything from the wall comes out 1.5", therefore the the comments regarding that.

 

[Troodon]

Ah OK, got it now. Yes, the trap is a bigger diameter than the 1-1/4" tailpiece. I'll get a couple of those reducing washers for this and any future uses.

 

[Troodon]

So I bought the extension, but didn't end up using it. I'm keeping it around just in case. The 1 1/4 inch tailpiece extended into the 1 1/2 inch p-trap about 3/4 inch below where the nut locks them together. I should have asked what the prevailing wisdom was about how far the tailpiece should penetrate the trap, I guess. But it seemed OK through a few tests with a stopped sink full of water.

I also found that the white 1 1/2 to 1 1/4 reducing washers I bought left a slight gap when I slid them over the tailpiece. I didn't know if this was by design -- for example, if the gap is supposed to squeeze shut when the washer is locked in there with the nut (Is that the case?). I ended up using a different washer, one I had left over from a previous project:

It has a different profile than the ones I got from supply house. This red oatey one, with the terraced step-down design, seemed to work OK and be snug, though I thought it looked weird when I installed it. No leaks, though.

Let me know if I've made any mistakes here.