Sump pump hose coupling

Connects a 1-1/2" corrugated hose (common for sump pumps in North America) to a 3" threaded PVC cleanout fitting.

(I needed to make that connection reliably, with very little vertical space. See the third photo - this was the situation I inherited. No further comment.)

This coupling is not watertight; it fits the case where your sump pump hose is draining into a wider pipe that will drain downward. I think allowing a little wiggle in the connection improves durability, because otherwise th