The Hollow Point from WILLIAMS FIRE & HAZARD CONTROL is an air aspirating foam discharging device designed to protect against a fully involved surface fire for cone roof or fixed roof storage tanks.  The Hollow Point is to be installed in the shell of a closed roof flammable liquid storage tank and can be used to replace existing foam chambers.   It discharges foam solution piped from outside the hazard area, either connected to a fixed system or supplied in a semi-fixed scenario by portable fire apparatus.