Cast Iron to PVC union, Plumbers what am i looking at here?

[Super38ACP]

This is a washer drain, plan A is to do my dead level best not to mess with it, but in case plan A doesn't work what am i seeing here, it appears to be filled with some sort of hardening pipe dope, but is very hard to clean and see, If it is a rubber gasket it doesn't have a flange on the top like most I've seen and it it hard as a rock.

It was probably done in the 80s, if not before.

I REALLY REALLY REALLY do not want to chisel out concrete to get a fernco on it.

Thank You in advance.

 

[yatg]

maybe ...

 

[PCustoms]

Maybe lead?

@dtuned might want a run at it

Maybe once a year when there's no other option.

 

[Wrench97]

I've used yokum and leaded pvc in before but it was long ago.

 

[Sturgeon]

Clean socket / hub until it shines and acquire the Fernco donut from your locale plumbers wholesale house. Lube the donut lightly with the proper grease, inside and out. Shouldn't be a big issue.

 

[PCustoms]

Lube the donut lightly with the proper grease, inside and out. Shouldn't be a big issue.

I'll let her know...

 

[Jackfre]

Well the old way, prior to the Fernco, was to take a torch and melt the lead out, then pull the compressed oakum. Clean the hub,Insert your pvc, install and compress the new oakum then, as a home owner get lead wool, insert it on top of the oakum. Get a couple pieces of wood to make inside and outside yarning iron to set the lead into the hub. Should you get a bit of moisture at first it will likely make up once the oakum expands. If not reset the lead with the yarning irons. Not sure if lead wool is even available. Should you be bold and find a ladle and 5 or so lbs of lead and a runner to pour the joint make sure you wear eye protection. I was on a refinery job some 50 yrs ago, pouring 18” joint for the flame arrestors in catch basins. We had about 100# of molten lead. A meathead walked by, spit in the pot and that 100# blew up. Burned him pretty good. The guys on the crew were ok as we were some distance away.

 

[GrayFlattop]

I’ve used oakum and poured lead many times and I was never fully comfortable. All the joints sealed, but the whole molten lead meets moisture thing made me extra cautious and paranoid. FWIW everything passed inspections by some very picky inspectors.

If you need to reconfigure, just cut off the pvc leaving enough length to glue a new fitting on. If it loosens up, then just take it apart and put it together using a Fernco.

 

[carlaisle]

What issue are you facing that has prompted this question?

 

[BurtEggley]

Plan A sounds like a winner to me.

 

[welder4956]

I like Plan A as well. If it ain't broke, don't fix it.

 

[southalabama]

Plumbing never goes to plan.

Case in point. Went to change shower head. Galvanized pipe. Joint broke. Inside thread wrench failed. Ended up cutting hole in closet wall. Removed pipes down to diverter/main valves.

 

[Mr onetwo]

You need one each of these to repair/replace that joint...

https://www.homedepot.com/p/Fernco-2-in-Service-Weight-Cast-Iron-Hub-to-2-in-Sch-40-PVC-Compression-Donut-P22U-205/100372278

https://www.homedepot.com/p/NIBCO-2-in-PVC-DWV-Hub-x-Spigot-Soil-Pipe-Adapter-C4805HD2/100677974

https://www.homedepot.com/p/IDEAL-2-in-No-Hub-Coupling-Repair-Clamps-6218095/202309391

 

[Super38ACP]

Clean socket / hub until it shines and acquire the Fernco donut from your locale plumbers wholesale house. Lube the donut lightly with the proper grease, inside and out. Shouldn't be a big issue.

That sounds like a promising plan B

What issue are you facing that has prompted this question?

That whole story is very long, the short version is that the new stacked washer and dryer needs vent that will occupy the space where this washer box is, so i need to move this over.

Plan A sounds like a winner to me.

Affirmative.

 

[Super38ACP]

You need one each of these to repair/replace that joint...

https://www.homedepot.com/p/Fernco-2-in-Service-Weight-Cast-Iron-Hub-to-2-in-Sch-40-PVC-Compression-Donut-P22U-205/100372278

https://www.homedepot.com/p/NIBCO-2-in-PVC-DWV-Hub-x-Spigot-Soil-Pipe-Adapter-C4805HD2/100677974

https://www.homedepot.com/p/IDEAL-2-in-No-Hub-Coupling-Repair-Clamps-6218095/202309391

Thank you!

 

[Mr onetwo]

That cast iron pipe is known as "service weight" hub and spigot pipe. If that joint is not lead, then it is either mortar (not common) or plastic seal. You can cut the pvc right at the hub, carefully slit the pvc fitting and remove it.It has a ridge on the end as illustrated above.Then you can carefully chisel out the sealant and oakum if it is underneath in the joint.Be careful as old cast iron is prone to split and then you have to cut the hub off below the floor and use a Fernco.Is there a basement below?

 

[Mr onetwo]

If it turns out to be lead, then take a 1/4" drill bit and drill a bunch of holes all around it.It will come right out with a straight bladed screw driver. Go at it slowly.

 

[PorkRollEnjoyer]

This is a washer drain, plan A is to do my dead level best not to mess with it, but in case plan A doesn't work what am i seeing here, it appears to be filled with some sort of hardening pipe dope, but is very hard to clean and see, If it is a rubber gasket it doesn't have a flange on the top like most I've seen and it it hard as a rock.

It was probably done in the 80s, if not before.

I REALLY REALLY REALLY do not want to chisel out concrete to get a fernco on it.

Thank You in advance.

Thats a pvc soil adapter with a lead and oakum joint. I actually did this today at work coincidentally. Lead joints here still arent that uncommon especially when you work with old men like I do who like to relive their plumbing glory days sometimes. I couldn't save the pipe because it was 1/4 bend with a clean out on top and I couldn't get a straight cut with enough meat left for a ARC coupling and didn't have a donut on site but had a soil adapter and lead and oakum in the truck. It's a fitting to adapt hub and spigot cast iron to PVC.

 

[PorkRollEnjoyer]

This is a washer drain, plan A is to do my dead level best not to mess with it, but in case plan A doesn't work what am i seeing here, it appears to be filled with some sort of hardening pipe dope, but is very hard to clean and see, If it is a rubber gasket it doesn't have a flange on the top like most I've seen and it it hard as a rock.

It was probably done in the 80s, if not before.

I REALLY REALLY REALLY do not want to chisel out concrete to get a fernco on it.

Thank You in advance.

If you want to remove it , cut the

This is a washer drain, plan A is to do my dead level best not to mess with it, but in case plan A doesn't work what am i seeing here, it appears to be filled with some sort of hardening pipe dope, but is very hard to clean and see, If it is a rubber gasket it doesn't have a flange on the top like most I've seen and it it hard as a rock.

It was probably done in the 80s, if not before.

I REALLY REALLY REALLY do not want to chisel out concrete to get a fernco on it.

Thank You in advance.

If you want to remove it I would cut the pvc at the face of the cast iron hub , stuff a rag or something in the pipe , then make cuts on the plastic inside the hub with a sawzall and cut thru the plastic and lead a few times and beat it out with a hammer and screwdriver. Just take your time if takes 2 hours who cares just dont break the hub.

 

[Super38ACP]

Thank you all.

Plan A worked.

On closer inspection and more cleaning, i do believe it is leaded. If i ever have to mess with it again it is probably plan B... (The Doughnut). Hopefully that wont be me.