Apollo A7543 Upper Port Insert 

INCREASE AIR CAP PRESSURE AND PERSONAL COMFORT

Connect your air hose to the upper port of your Apollo AtomiZer™ 7500T/7700T Series spray gun. Simply remove the blanking cap and add the upper port insert. You can now attach your hose to the top of your spray gun, thereby increasing your air cap pressure and enabling you to put the hose over your shoulder.