I want to tie a new toilet drain into an existing main line cleanout.its an older cast iron one that is vertcal.can I remove the plug and install a hub that will screw into it. Or do I need to install a wye so the water is directed more downstream?? :confused: the mainline runs horizontal where I want to connect it to.

1evad...

Ideally you will cut a new directional fitting into the stack. It is illegal to install fittings into cleanout, but many people do it anyway!

If you plan to cut into the stack be sure to talk to us first as you will need to support the stack before using a ratchet cutter to cut into it!

Let us know...

MARK

I want to tie a new toilet drain into an existing main line cleanout.its an older cast iron one that is vertcal.can I remove the plug and install a hub that will screw into it. Or do I need to install a wye so the water is directed more downstream?? :confused: the mainline runs horizontal where I want to connect it to.

Where would this toilet be installed ? Basement? First or second floor?
Mark's correct when he states.
It is illegal to install fittings into cleanout, but many people do it anyway And the reason they do it that way is because to cut into a vertical stack and add a fitting is both labor intensive and, if the stack should fall while cutting into it, extremely expensive. The Plumbing Page's about giving you options. Not to inflict code upon you. Let us know more about your layout. Rehards, Tom

Where would this toilet be installed ? Basement? First or second floor?
Mark's correct when he states. And the reason they do it that way is because to cut into a vertical stack and add a a fitting is both labor intensive and, if the stack should fall while cutting into it, extremely expensive. The Plumbing Page's about giving you options. Not to inflict code upon you. Let us know more about your layout. rehards, Tom

The bathroom , just a toilet and a sink, will be adjacent to another bathroom.its on the first floor with about a 2 foot crawlspace underneath it. What is the plumbers page? I don't trust myself cutting into the main stack. Sounds like a big project!!

Evad, You ask,
what is the plumbers page? This is the Plumbing Page. And here we advise you What's easiest for you. Not what code calls for since cmost of our askers are doing the job without a permit or inspection.
As I've stated in a earlier post,
The Plumbing Page's about giving you options. Not to inflict code upon you.
Is the cleanout located in the crawl space? Regards, tom

Evad, You ask, This is the Plumbing Page. And here we advise you What's easiest for you. Not what code calls for since cmost of our askers are doing the job without a permit or inspection.
As I've stated in a earlier post,
Is the cleanout located in the crawl space? Regards, tom

Yes Tom cleanout is located in the crawlspace. Very close to where the toilet will be.You' guessed it right on.Im looking what is easiest for me without a permit. A permit in this city would kill me for this job. They would probably want me to replum whole house and who knows what else.(neighbors remodeled and went through all the headaches)if you think it will work through cleanout that would be great.

If you can find a threaded PVC female adapter( oops! I meant male threaded adapter) that will thread into your cleanout you can install that and wye off the toilet drain to pick up your lavatory. The lavatory will have to be vented out the roof or revented back into a existing dry vent in the attic. The toilet will be wet vented by the lavatory vent, Good luck, Tom

Tom meant a threaded MALE adapter... ;)

Just FYI...

MARK
Thanks Mark, It was 2 AM when I answered!

If you can find a threaded PVC female adapter( oops! I meant male threaded adapter) that will thread into your cleanout you can install that and wye off the toilet drain to pick up your lavatory. The lavatory will have to be vented out the roof or revented back into a existing dry vent in the attic. The toilet will be wet vented by the lavatory vent, Good luck, Tom

The cleanout is not wyed at all. Will there be a problem with clogging being the water is not directed downstream.its just a straight shot so drain can be cleaned either way.

the cleanout is not wyed at all. Will there be a problem with clogging being the water is not directed downstream.its just a straight shot so drain can be cleaned either way. Not what I meant!
After you transision to PVC with a threaded male adapter you can install a 3 X 2" wye to pick up your lavatory.. Regards, Tom

If it was small hand sink, I would say: go ahead, connect it. But with toilets, it is different story. There will be some problem with sewage flow if you connect to clean out.. Clean out has no sweeps either way. I would suggest that you cut in Y and 45 as transition piece for your toilet.

If it was small hand sink, I would say: go ahead, connect it. But with toilets, it is different story. There will be some problem with sewage flow if you connect to clean out.. Clean out has no sweeps either way. I would suggest that you cut in Y and 45 as transition piece for your toilet.

I was afraid to hear this.that old cast iron cleanout doesn't have sweeps either way.Cutting that cast iron pipe will be no fun. Under the house with not much room.even with cast iron cutters. Maybe a good hacksaw? I'm not sure about this project!! :eek:

Tom meant a threaded MALE adapter...;)

Just FYI...

MARK
Thanks Mark, It was 2 AM when I answered!

What's an old man such as yourself doing up at 2 AM. Lol. Probably worrying about the post he made at 8 PM, kind of like me. Wow this site is addicting.

A fixture dumped into a vertical stack will have better venting action with a tee than a wye. Just look at the old cast iron setups. Had very little problems(other than rotting pipe) Not much difference(really)between a straight tee and a directional tee, until it comes time to run an auger down the pipes.

a fixture dumped into a vertical stack will have better venting action with a tee than a wye. Just look at the old cast iron setups. Had very little problems(other than rotting pipe) Not much difference(really)between a straight tee and a directional tee, untill it comes time to run an auger down the pipes.

I was thinking a wye because it will be spliced in the horizontal part of the main.it will be vented up near the toilet

whats an old man such as yourself doing up at 2 AM. lol. probably worrying about the post he made at 8 PM, kind of like me. Wow this site is addicting.
Got up for a drink of water and just peeked in to see what's new.
Evad, I would tie to the clean out if it were my house. While it's true a clean out tee doesn't have a sweep the force of the flush should force the solids and paper through into the stack. After you convert to PVC you can install a 3 X 2" wye to pick up your lavatory.
in my book it's a good gamble when you look at cutting in a sanitary tee, I wouldn't use a wye) to the cast iron stack vent. It's bad enough to cut into a cast iron stack in the basement where you have room but in a crawl space. Nah!! Go for the easy way first. if that doesn't work you can always go back and do a "redo". Goodluck, Tom

Got up for a drink of water and just peeked in to see what's new.
Evad, I would tie to the clean out if it were my house. While it's true a clean out tee doesn't have a sweep the force of the flush should force the solids and paper through into the stack. after you convert to PVC you can install a 3 X 2" wye to pick up your lavatory.
in my book it's a good gamble when you look at cutting in a sanitary tee, I wouldn't use a wye) to the cast iron stack vent. It's bad enough to cut into a cast iron stack in the basement where you have room but in a crawl space. Nah!! Go for the easy way first. if that doesn't work you can always go back and do a "redo". Goodluck, Tom

Tom that sounds like a plan to me. Not much downhill slope on cleanout.but I can always redo like you said. Working on this project this weekend. Can't do much during the week

You cannot go wrong clean out. People usually don't appreciate clean outs until they are needed... Put one in, you may never use it - but if you do, you will be happy you had one ! Let us know how's going... Milo

You cannot go wrong clean out. People usually don't appreciate clean outs until they are needed....Put one in, you may never use it - but if you do, you will be happy you had one ! Let us know how's going.... Milo

Thanks Milo and Tom.Milo it says your from southern Calif. Me Too.I might need to call you when I get stuck??