The Model 899 End-All fitting is a unique domed end cap fitting available with a ½”, ¾” or 1” NPT or BSP threaded outlet. Designed as an end of line fitting, the End-All features two multi-function bosses which can be used for the direct connection of sprinkler heads, sprigs, drops, drains and or gauges. The Model 899 End-All fitting pressure ratings conform to the ratings of the coupling used to join the system.