LSF model foam makers are designed as air aspira ng equipment specially used for dyke protec on, open floa ng roof storage tanks and rim seal areas where low velocity expanded foam flow is required. They are generally installed in the fire protec on line at the point of discharge, where the equipment is fed by a premixed foam solu on. LSF foam makers are designed with a calibrated orifice plate to determine the equipment's flow rate. Its special orifice plate creates an air vacuum effect and the foam solu on expands after being sprayed through the discharge port of the equipment. LSF model foam makers can be produced to discharge up to 3200 l/min @ 5 bar inlet pressure whilst special flow rates are available on request. LSF model foam makers can be combined with FP or FP-I type pourers to pour expanded foam concentrate gently onto liquid surface.