Eastman 1-1/2" Trap Adapter (#35388): Slip Joint to Solvent Weld
By Maintenance Depot Plumbing Team · Last reviewed
Quick answer
The Eastman #35388 1-1/2" trap adapter converts a solvent-weld drain pipe to a slip-joint connection so a sink trap arm can be attached. It is made of durable polypropylene.

Your wall drain pipe is usually glued (solvent welded), but sink traps use slip nuts. The Eastman 1-1/2" trap adapter (#35388) connects the two.
Specs at a glance
| Spec | Detail |
|---|---|
| Product | Trap adapter |
| Brand / model | Eastman #35388 |
| Size | 1-1/2" |
| Material | Polypropylene |
| Function | Solvent weld to slip joint |
What it does
The trap adapter provides a means of adapting a solvent-weld connection to a slip-joint connection. One side is cemented onto the drain pipe; the other accepts the trap arm with a slip nut and washer.
Features
- For tubular drain applications
- Made of durable polypropylene
- 1-1/2" size, common for kitchen sinks and many basins
How to install
- Cut the drain stub out from the wall to the right length.
- Clean and cement the adapter onto the pipe, and let it cure.
- Slide the slip nut and washer onto the trap arm.
- Insert the trap arm into the adapter and hand-tighten the nut.
- Run water and check for leaks.
Common mistakes
- Using the wrong cement: polypropylene does not bond with standard PVC cement. Follow the product's instructions on which end gets cemented and which uses the slip joint.
- Leaving the stub too long, so the trap can't line up.
- Over-tightening the slip nut.
Finish the job
Pair with a tail piece and extension tube from Maintenance Depot for a complete sink drain.
Frequently asked questions
What does a trap adapter do?
It connects the glued drain pipe in the wall to the slip-joint trap under a sink.
Can I use PVC cement on polypropylene?
No. Standard PVC cement does not bond to polypropylene; follow the product instructions for each end.
Why does my trap not line up?
The wall stub may be too long. Cut it to length before fitting the adapter.
Buy Eastman PVC Trap Adatper 1-1/2" #35388 at Maintenance Depot