Existing Galvanized 1.5” Laundry Waste

[Md2020Drums]

Hey all;
Mostly here for moral support, but I need advice too!
I’m in the trades, but I’m definitely NOT a plumber, so let’s get that out of the way. I work for a pretty big local outfit that does have plumbers and mechanical guys. I’m sure some of you may even work for them!
Anyway, my house was built in 58, and fortunately when I bought it, most of the stuff that needed to be done was done. Except for the DWV plumbing. The pressing issue is my laundry room.
I recently have had an issue with my laundry drain overflowing. I moved the discharge to the slop sink, but my curiosity got the best of me, so I opened up the walls and found work done incorrectly. The laundry standpipe and sink was all incorrectly redone at some point with CPVC. The standpipe itself was “wye’d” into the sink drain as you can see from the pictures. The vent standpipe is where it is, and my plan is to redo it all 2”. To keep this project as efficient as possible, I want to leave the galvanized vent and use a Fernco coupling to join the new waste plumbing to the existing vent.
So my questions for the pros are:

Is it acceptable to put a 90 degree fitting to go around the wall for the laundry discharge?

Is the vent standpipe going to come crashing down when I cut out the old tee’s?

The kitchen is tied into the same sewer line as the laundry, so my plan is to eventually do the kitchen as well. I believe my sewer line is cast iron. I’ve attached a photo of it. Will this accommodate a 2” pipe with a Fernco donut? It looks to me like it will, but I don’t want to risk without asking you guys first.

sorry about the essay! Look forward to hearing what you guys have to say

 

[Terry]

You have 2" cast in the ground coming up, with a 1.5" steel pipe that has been leaded in. The steel can come out and the lead with it. Remove the oakum below the lead, clean up the hub and use a Fernco donut in the hub. Beveling the new 2" pipe and splashing some liquid soap on it, tap it in with a 2x4 and hammer. Then you can start building a proper washer standpipe.

It would also be a good time to snake the drain. Don't forget to have a cleanout on the new pipes.

 

[Sponsor]

 

[Md2020Drums]

You have 2" cast in the ground coming up, with a 1.5" steel pipe that has been leaded in. The steel can come out and the lead with it. Remove the oakum below the lead, clean up the hub and use a Fernco donut in the hub. Beveling the new 2" pipe and splashing some liquid soap on it, tap it in with a 2x4 and hammer. Then you can start building a proper washer standpipe.

It would also be a good time to snake the drain. Don't forget to have a cleanout on the new pipes.

Thank you for the quick response!
That second picture, is that a studor vented washer box? The space is limited, and that example there is more realistic of what I’ll be able to do in this laundry room. thank you again!

 

[Md2020Drums]

Thank you for the quick response!
That second picture, is that a studor vented washer box? The space is limited, and that example there is more realistic of what I’ll be able to do in this laundry room. thank you again!

Or, instead of that long 90* at the base of the vent, could I use a sani-tee instead?

 

[Terry]

The plumbing inspector likes the combo on it's back, but the santee will work too.
They like the combo in case someone at a later date wants to wet vent something without knowing what's there. It helps to future proof things.

 

[Md2020Drums]

Thanks Terry!
Back when I was a building engineer, we had mandatory classes every now and again. The instructor liked to use a lot of your diagrams.
Pretty cool we get help from the master, himself!
Thank you

 

[Md2020Drums]

The plumbing inspector likes the combo on it's back, but the santee will work too.
They like the combo in case someone at a later date wants to wet vent something without knowing what's there. It helps to future proof things.

Got it all cleaned out.
But there’s a problem, the inside diameter of the (I’m guessing it’s called the hub?) is 3 1/32”.
I could not find a donut ANYWHERE.
Is anybody familiar with where I could find something that would work?
Thank you!!

 

[Reach4]

https://www.fernco.com/sites/default/files/fernco_catalog_T2112.pdf page 32
https://www.fernco.com/contact-us


22UX-205 22U-205 are similar, but one is a little bigger outside. I suggest you search out those numbers, and see what you find.

Maybe order both, and use the one that fits best. I have no experience with these...

 

[Md2020Drums]

https://www.fernco.com/sites/default/files/fernco_catalog_T2112.pdf page 32
https://www.fernco.com/contact-us


22UX-205 22U-205 are similar, but one is a little bigger outside. I suggest you search out those numbers, and see what you find.

Maybe order both, and use the one that fits best. I have no experience with these...

thanks for the links! I’m leaving town next week for work down in Oregon. This branch serves the kitchen and laundry, so I can’t leave it disconnected. I will hit up some supply houses in the AM and hopefully come across one of these.
You were saying you weren’t familiar with these.
Outside of using a Donut, how would you do it yourself?

 

[Reach4]

Outside of using a Donut, how would you do it yourself?

I would maybe order both sizes I mentioned above from SupplyHouse, and see which fit better. I suspect one will be right.
I might check the Lowes website and check their stock.
I might go to HD at 26120 104th Avenue Se in Kent, and buy just the available Fernco P22U-205 from aisle 16 bay 015 and see if that was the right size.

Maybe I should call Fernco and ask what to use, and ask what plumbing supply carries it.

 

[Md2020Drums]

I would maybe order both sizes I mentioned above from SupplyHouse, and see which fit better. I suspect one will be right.
I might check the Lowes website and check their stock.
I might go to HD at 26120 104th Avenue Se in Kent, and buy just the available Fernco P22U-205 from aisle 16 bay 015 and see if that was the right size.

Maybe I should call Fernco and ask what to use, and ask what plumbing supply carries it.

Lol I get the joke, but what I meant to ask was if you had a “trick” that you use instead of using the donuts. No matter, I found one at the local supply house. No leaks from the kitchen so far. Going to finish the laundry stack and test it again

 

[Md2020Drums]

I added a clean out at the bottom, there wasn’t one before. Does this look ok to you guys?

 

[Terry]

Looks good to me.