Firefighting angle valve  designed to combine the functionality of an elbow and a valve into a single device. Recommended for throttling applications where it's not uncommon to restrict the flow of water.  Used in multi-story buildings, to ensure that the pressure at outlets on the lower floors (where the water supply has greater pressure) is not so high that firefighters or a building's occupants can't effectively control the hoses. It is available in a one option 2”.