WH42 Union
A hose barb is defined as one or more continuous ridges or bumps on a fitting that are used to grip the inside diameter of a tube and seal the connection. As a tube is installed on the fitting, it expands over the barb. Grip and seal occur as the tube tries to relax to its original inside diameter behind the barb. See our wide selection of brass hose barbs and mini-hose barbs by browsing below: