Tub plumbing HELP. Need help with an adaptor to buy

[mypuppysirius]

Thank you for your help in advance. I'm installing a tub in my basement and need a connection to go from the inside of a 2" pipe to which turns into 1.5" piping without gaining any height in the process if that makes since.

Basically what's going on is that i have a 2" pipe in the ground that is flush with the cement in my basement. The tub drain pipes are 1.5" and when I make the connection I need them to not gain any more height off the ground. The tub sits on a 4" platform so all of this has to fit in that tall of a space. If there is a fitting out there which can go into the 2" pipe, then instantly fit inside the extended connection of the 1.5" connecting pipes (i.e. go from fitting inside 2" to exactly 1.5") I really really need to know where to buy one or what it's called.

Thanks!

 

[frodo]

you need a pvc 2''coupling x 1.5'' threaded adapter with a 1.5'' sj nut

you will have to chip out about 1'' deep around the pipe