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Old 01-06-2018, 07:31 PM   #16
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Re: What kind of sink trap adapter is this (photo)?


HK to the rescue again! Great assistance.
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Old 01-06-2018, 08:43 PM   #17
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Re: What kind of sink trap adapter is this (photo)?


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Great thank you, one last question. If I would decide to remove the old sink and Ptrap a few days before the new one gets installed, would it be safe to put a wet rag in the trap adapter to keep sewer gases from coming into the house? I know it could probably be capped off with an actual cap but if a wet rag is just as safe I will do that.
I like a sandwich baggie and a rubber band or the trap nut screwed on over the bag
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Old 01-11-2018, 12:56 PM   #18
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Re: What kind of sink trap adapter is this (photo)?


What size angle stop? (This is for a different bathroom, but didn't want to start a whole new thread.) See picture
In one of our bathrooms, at some point a plumber installed smaller 3/8 O.D. copper pipe that come off of the 1/2 copper pipe from wall. Im guessing he added this to make a new connection that compression angle stops could screw onto in the future ( instead of having to have them soldered on.)
Anyway we want to replace these in the bathroom, but something about the size we need for just this bathroom is confusing to me, and here is why.
All other angle stop valves in our house are the standard 1/2 in NOM Compression Inlet x 3/8 O.D. outlet.
But when I measure the actual copper inlet pipe for the 1/2 size valve for all of those it actually measures 5/8 O.D. SO why we needed 1/2 for all the others was odd to me. That just makes understanding what size we need for the one bath with smaller pipe more confusing.
Now that this one bathroom has a even smaller than normal copper pipe 3/8 O.D. connected to our angle stop, a lady from Brasscraft told us we need a 3/8 Nom compression inlet x 3/8 outlet. why is the inlet size she said we needed the exact same as the O.D. of the copper pipe I measured for this one, when all the (1/2 inch inle)t for a pipe that really measured 5/8.
I also enclosed a photo.
SO do we need 3/8 x3/8 like she said
Or does that 3/8 O.D really mean it is a 1/4 size fitting.
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Old 01-11-2018, 02:12 PM   #19
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Re: What kind of sink trap adapter is this (photo)?


Pipe is measured on the inside. Tubing is measure on the outside.
So the 1/2" copper pipe coming out of the wall is 5/8" when measured on the outside.
The 3/8 tubing between the ell and the stop valve is 3/8" measured on the outside.
Remember tubing is measured on the outside. If measured on the inside it would be 1/4".

To replace the stop you will need a straight stop valve. A 3/8" compression fit input to 3/8 compression fit output straight stop valve.
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Old 01-13-2018, 06:40 AM   #20
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Re: What kind of sink trap adapter is this (photo)?


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What is sticking out of the wall apears to be an ABS trap adapter. Whether it is 1 1/2" or 1/1/4" I cannot tell. Traps come in two sizes, 1 1/2" for kitchen sinks and 1 1/4" for lavatory sinks. A 1 1/2" can and often is used for lavatories.
You should be able to measure the adapter and determine what size you have.
You probably can purchase the nut you need as a separate item at Home Depot or Lowe's. However there is another fitting that is used when you want to attach a piece of PVC to another piece of PVC pipe but don't want to glue it permanently. That would be called a compression fitting. It is very similar in size and appearances to the trap adapter. However it is slightly different and the nut of the compression fitting will not fit the trap adapter. Nor will the trap adapter nut fit the compression fitting.

Unless you can find a nut marked as a trap adapter nut for the size you need your best bet is to simply purchase a trap adapter for the size you need and use the nut from it. They are not expensive, only a couple of dollars.
The male/female part refers to how the trap adapter attaches to the pipe inside the wall. Not something you need concern your self with.

You indicated that you have purchased a 1 1/4" trap. That of course refers to the diameter of the trap itself. If you have a 1/1/4" trap adapter sticking out the wall you will need to purchase a 1/1/4 trap adapter to get the proper size nut.

If the trap adapter sticking out the wall is 1 1/2" you will need to purchase a 1 1/2" trap adapter. It will come with nylon seals for both 1 1/4" traps and 1 1/2" traps. You would use the proper size seal and the nut.

These are incidental items and even someone at Home Depot or Lowe's should be able to assist you
I ended up finding a trap adapter with a nut on it that fits on my existing trap adapter. It was the Nibco 58017R. But it did not come with a washer, and when I look inside the nut it looks like the washer is built into the nut and no additional washer will fit and let me screw it in to adapter. Is it possible that this is a nut with built in washer?
I can't find any diagram, spec sheet or info on it. Here is a link to the Nibco Trap adapter nut I will be using.
https://www.supplyhouse.com/Nibco-I0...Adapter-58017R
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Old 01-13-2018, 07:33 AM   #21
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Re: What kind of sink trap adapter is this (photo)?


That should work just fine. Sorry forgot about those, getting absent minded in old age.
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Old 01-17-2018, 06:55 PM   #22
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Re: What kind of sink trap adapter is this (photo)?


I am in the home stretch updating faucets and P traps in multiple bathrooms now! But I ran into one last kink. I was able to unscrew the old drain assembly from the sink just fine on the bottom side, but that flange that sits inside the top of the sink where the stopper rests is stuck in the top of the sink and will not budge...at all. I looked from underneath and it looks like somebody put a silicone sealant or something under that flange. How in the heck will I ever get that top flange out without damaging or cracking that area of the sink? I was hoping to install the new flange/stopper and drain that came with the new faucet if I can!
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Old 01-17-2018, 06:59 PM   #23
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Re: What kind of sink trap adapter is this (photo)?


Post a pic of what you are looking at.
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Old 01-17-2018, 07:17 PM   #24
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Re: What kind of sink trap adapter is this (photo)?


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Post a pic of what you are looking at.
Here is a photo of the flange that appears to be glued into that sink.
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Old 01-17-2018, 07:32 PM   #25
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Re: What kind of sink trap adapter is this (photo)?


You need a pic from the bottom side.
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Old 01-17-2018, 08:05 PM   #26
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Re: What kind of sink trap adapter is this (photo)?


Try spraying some WD40 around the flange and leave it over night.
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Old 01-17-2018, 08:10 PM   #27
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Re: What kind of sink trap adapter is this (photo)?


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You need a pic from the bottom side.
I already have the new faucet in, and new P trap installed with the old drain as I got tired of not being able to get the old flange off. And unless somebody had a suggestion of how to get these out when they are stuck I'm not going to rip everything apart again to take a photo. The only thing you would have seen from the bottom is a bit of plastic threading that comes down under that flange, that the plastic drain assembly from below screwed up onto. That is it. And it looks like silicone in between where the plastic threading is and the sink itself.
I'm sorry I didn't think to get a photo from underneath when it was all ripped apart, and understand if I can't get advice without the photo. I will just have to leave the old drain assembly in.
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Old 01-17-2018, 08:38 PM   #28
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Re: What kind of sink trap adapter is this (photo)?


Shown below is a typical lavatory drain assembly.
Click on the image to enlarge.
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Old 01-17-2018, 09:04 PM   #29
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Re: What kind of sink trap adapter is this (photo)?


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Shown below is a typical lavatory drain assembly.
Click on the image to enlarge.
I did think about tapping it from bottom of drain assembly underneath with a hammer as you suggested, I just don't work with sinks enough to know that even if the hammer only makes contact with the end of the drain assembly from underneath, and not the sink itself, that it still might not crack the sink if it is feeling some of the residual impact from the part that is glued to it that I am trying to break free. My fear is cracking the sink. I do so appreciate all of your answers though, you are always so helpful!! I guess if I can't stomach tapping it with a hammer myself I will have to call in a professional at that point. Thank you again for always being so responsive to my questions!
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Old 01-17-2018, 09:24 PM   #30
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Re: What kind of sink trap adapter is this (photo)?


After lowering the nut and pulling down the gasket, grasp the end of the drain assembly, pull back and forth and side to side. The hole thru the sink is larger than the drain assembly, the pulling back and forth, side to side should break the seal. Plumbers putty is sort of like Play Dough, It sticks together but doesn't really stick to other things. Silicone will be a little sticky but but it is not like glue. Even it will break loose fairly easily from sink surface.
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