Blantz
New Member
The old one is rusty, so I'd like to replace it. Pulled out, the OD of the threaded portion seems to be 1-1/2". I bought a replacement that was 1-1/4" NPSM but 1-5/8"-16 UNC-2A (ordered it before measuring). Its just a little too big. I'm having difficulty finding a part that is listed as 1-1/2" OD. Does such a thing exist or do I need to have the entire drain trap replaced?
