Bath tub drain connection option

[Napat I]

Hello. First time posting. Please let me know if there is any info you need.
I will be replacing a bathtub. The existing drain is metal with compression fitting.
What would be the best option to connect to the existing rough-in.
Most drain kits at home improvement store are PVC.
The house is on slab.

 

[Geofd]

Gerber makes a good brass drain assembly there are also glue type waste and over flow assemblys

 

[Geofd]

Gerber makes a good brass drain assembly there are also glue type waste and over flow assemblys

Dig around and find the rest of the piping,if its been buried for some time you want to know the
condition

 

[Napat I]

Dig around and find the rest of the piping,if its been buried for some time you want to know the
condition

I dug around to the point where it goes under the slab again. Only exposed the top half. Will try to run water through it to see any dampness

 

[Napat I]

Gerber makes a good brass drain assembly there are also glue type waste and over flow assemblys

Gerber makes a good brass drain assembly there are also glue type waste and over flow assemblys

Can I use the PVC portion of the drain and overflow drain and connect then to the existing brass pipe at the compression joints?

 

[Geofd]

I dug around to the point where it goes under the slab again. Only exposed the top half. Will try to run water through it to see any dampness

Can you dig around the trap and fitting even if you test now and uit doesnt leak it could leak tommorow use a big screw driver to loosen up around piping and trap may be there is a way to add a cleanout flush with the floorso you have access to your main drain

 

[Geofd]

Can I use the PVC portion of the drain and overflow drain and connect then to the existing brass pipe at the compression joints?

Use all brass or all pvc

 

[Jeff Handy]

Be very careful digging or poking near any of the old drain, you could crack it or poke a hole.

Then you are forced to make a much bigger digging project.

 

[Geofd]

When you dig out the trap and related piping , be careful yes,but show pics you dont want to bury pipe thats in bad shape do the hard work nkw BEFORE you set the tub

 

[Napat I]

Use all brass or all pvc

At what point do you transition back to brass assuming all is good?

 

[Napat I]

When you dig out the trap and related piping , be careful yes,but show pics you dont want to bury pipe thats in bad shape do the hard work nkw BEFORE you set the tub

Bad shape means rust, corrosion or cracks. Correct? I will try to get you some pics. Thanks for the help