Sprinkling head for fire fighting systems

A sprinkling head for fire fighting systems, said sprinkling head having a closed position and an open position and comprising a sprinkling nozzle holding a replaceable cap which is removably threaded to a body of said sprinkling head and includes a plurality of nozzles for ejecting a nebulized liquid and an inner cavity to which said liquid is conveyed, said body comprising a plurality of openings and an automatic opening device for automatically ejecting nebulized liquid as an environment temperature exceeds a set temperature threshold value, and wherein said body further comprises an inner slider element which can be driven against an urging spring for defining a closed position thereof said slider element closing said openings of said body thereby preventing said liquid from entering said sprinkling head, in said open position thereof said slider element clearing said opening thereby allowing said liquid to enter said body of said sprinkling head, to be conveyed, through and axial channel formed in said slider element, to said inner cavity of said cap.