Abstract: A sprinkler with flexible body for fire suppression includes a sprinkler head. An adapter extends from the sprinkler head and a flexible conduit extends from the adapter. The conduit is connectable to a source of fire suppressing liquid. The sprinkler with flexible body has a composite K factor indicative of the discharge flow rate from a discharge opening defined by the sprinkler head and can be directly substituted for a sprinkler having the same K factor with no change in the hydraulic characteristics of the fire suppression system in which the sprinkler with flexible body is integrated. An embodiment without the adapter, wherein the flexible conduit extends from the sprinkler head, is also feasible.