Pentent Sprinklers: Used mainly, where water pipeling, used for sprinklers installation is concealed. The sprinkler is mounted in a l discharging spray hemispherically. Conventional Sprinklers: Used either in Upring or in pendent positions producing a spherical pattern with part of water sprayed towards the cell. Upright Sprinklers: Used mainly where the water pipeline is exposed. Mounted only in Upright position discharging spray hemispherically. Sidewall Sprinklers: Used mainly, where the pipeline run along the wall, sprinklers forms out ward half paraboloid pattern