I'm looking for a 2" adapter fitting with straight thread, as opposed to the tapered pipe thread....I think the threaded winterizing plugs have straight threads, but I need something like this: Shop LASCO 2-in Dia PVC Sch 40 Adapter at Lowes.com except straight thread...I tried searching Hayward products, but I don't see anything. I think if it exists, it's a pool part.