Pipe size

[zandergray]

Remodeling laundry room and want to change to 2in downpipe for washing machine. The current downpipe is 1.5inch (galvanized?) that connects to either 1.5 or 2 inch branch stack.

Is the branch stack 1.5 or 2 in iron pipe?
Im a bit confused as the downpipe and ptrap is 1.5 and the pipe into the hub is 1.5.

Would 2in pvc fit into this hub with a fernco doughnut?

See picture ( I keep getting errors uploading pictures)

Outer diameter of pipe is 2.5 (including paint)
Inside diameter of bell hub is close to 3in
Stamp on pipe reads EXH

 

[zandergray]

Remodeling laundry room and want to change to 2in downpipe for washing machine. The current downpipe is 1.5inch (galvanized?) that connects to either 1.5 or 2 inch branch stack.

Is the branch stack 1.5 or 2 in iron pipe?
Im a bit confused as the downpipe and ptrap is 1.5 and the pipe into the hub is 1.5.

Would 2in pvc fit into this hub with a fernco doughnut?

See picture ( I keep getting errors uploading pictures)

Outer diameter of pipe is 2.5 (including paint)
Inside diameter of bell hub is close to 3in
Stamp on pipe reads EXH

 

[Sponsor]

 

[Fitter30]

Cast iron pipe 2" id
2.3" od

 

[Reach4]

I think so. 2-inch extra-heavy.
https://www.fernco.com/plumbing/donuts-o-rings/donuts

Phoning Fidelity with your dimensions would be a good idea.

https://www.ferguson.com/product/fe...ra-heavy-pvc-steel-donut-f22ux205/_/R-3083361
https://terrylove.com/forums/index.php?threads/cast-iron-to-pvc-fernco-donut-woes.94121/