Brass Barb Insert Coupling - 1 x 1 with Hex - Geo-Hydro Supply, Ltd.

Geo-Hydro Supply of Sugarcreek, Ohio is a geothermal manufacturing supply store for all residential and light commercial geothermal loop supply needs.
Coupler for joining 1 rubber hose or plastic pipe to 1 rubber hose or plastic pipe 1 x 1 Brass Barbed Insert Coupling with Hex Secure with Hose clamps (ACCLAMP6)  

Nupi Americas, Inc., Geothermal Tools

Joywayus Brass Hose Barb Fitting 1 Barb x 1 Male NPT Water Fuel Air (Pack of 2) : Industrial & Scientific