Robust Trailer Blowout Adapter

3/4 inch garden hose (GH) male fitting x 1/4 inch national pipe thread (NPT) female fitting for blowing out the freshwater system of a camp trailer. Thread in a 1/4 inch NPT Male quick connect fitting and click it on your air compressor hose. Connect the city water hookup to an air compressor @ around 20 psi.

Remixed manomight's design with a thicker wall for the hose thread portion.