WYE fitting question

markharmon

I noticed a WYE fitting with a side inlet on it. Is that for a vent line or to tie in another drain into?

Javiles

is this the fitting your referring too?

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markharmon

Yes that is it. What is that inlet used for?

Javiles

Its actually a tee not a wye and depending on the configuration of the plumbing fixture group or system set up it could be used in multiple applications.

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markharmon

Ok but I am asking what the inlet part is for?

jmon

As javilles has stated it can be used for multiple applications. For example, the side inlet can be use as a Drain, Vent, or Waste depending on what, where, and how you are going to be using it. Before using one of these, please check plumbing code for your area. You may or may not be able to use inlet for certain applications. I'm not sure.

Alan

Side inlet fittings last I checked are not legal under UPC.

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markharmon

I was just wondering what it was used for. I also saw a combination Tee Wye. When are those typically used?

Alan

Today would be a good day to use it, I think.

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markharmon

So, you don't want to answer that last question?

jmon

I believe plumbers refer to those as just combination wye's, combination tee's, or just comby's. I know at the big box stores sales reps call them combination tee-wye and they are listed as combination tee-wye. Terminology can vary, depends who you ask. They can be used for Drain, Waste, and Vent applications. Required in some plumbing code areas to connect a branch line into a vertical drain pipe instead of a conventional tee fitting.

You refering to something like this?

link here

markharmon

Yes that is it. Why not just use a regular san tee instead of this? Since its a combo tee-wye can it be placed on its side like a WYE?

Javiles

Combo and wye are basically the same thing, sanitary tee is completely different animal in its use and application. what are you trying to do maybe easier this way,

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fetzer85

The problem is it seems like you're using this site as a literal classroom. You continually open threads with a generic line of questioning and every time you post you add more questions. I offered to mail you a framing book for free if you PM'd me your address because you told us you don't have $4.50 to spare, yet you never gave it to me. So YES, we're frustrated! Please either make threads about a specific project you're working on or take your own time to do the studying & research necessary to understand the things you're repeatedly asking about.