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. While compression and screw‐on fittings have their place, the barbed fitting remains the dominant system for connecting flexible tubing.
Hose barbs on fittings come in many shapes and sizes. Slope and depth of the barb, sharpness of the gripping edge, number of barbs, and spacing of barbs are all factors that contribute to the gripping and sealing ability of hose barbs. A key component of determining tubing terminations is the accuracy of the inside diameter of tubing.
hose barb fittings are an economical choice for general purpose fluid handling and pneumatics. Manufactured in both tapered and beaded hose barb styles hose barbs are reusable and offer good vibration resistance.