Inductor 3 : Equipment used with the larger sizes of foam-making branch to feed the foam compound into the hose line. Inductors may be "inline inductors", "multiple jet inductors", or "suction inductors"
H. J. Porter (Chairman - Technical Committee), Dictionary of Fire Technology, The Institution of Fire Engineers, The Victory Press (Leicester) Ltd. 1979 UK. (Fr Tech - Brit) {81}