Improved atomization with waterbased coatings The WBX applies waterborne basecoats and HS clearcoats with superior atomization and control. The WBX air cap has a long, flat, fan pattern, which gives an even overlap on modern paints. This is essential for mottle-free basecoat application and a flat and even lay down on clears. The WBX delivers a consistent droplet size when atomizing. This is vital to achieve a consistent application of waterborne basecoats. Fluid delivery control is essential for colour reproduction of waterborne basecoats. Nozzle 1.4.