Orion has decades of experience designing and manufacturing aspirated foam nozzles. While this type of nozzle has been less frequent used in recent years they will be more effective for applying fluorine free foam.
FF-230A & FF-450A Foam Branchpipes
FF-230PA & FF-450PA Foam Branchpipes
FF-230PB & FF-450PB Foam Branchpipes
BFN Series Class A Nozzles