Fire Hydrant 2 1/2" NH Flushing Elbow Female Threads_NYFD Two types of threads are

Two types of threads are used: British Standard Pipe Taper (BSPT) and British Standard Pipe Parallel (BSPP)

the type of clamping system used and the application

When used with smooth bore tips the pattern of the nozzle will become very tight and act as a solid stream of water rather than breaking apart

Type "A" polypropylene 3/4 inch male camlock (Cam & Groove) coupler to 3/4 inch female NPT threads

Fire Hydrant 2 1/2" NH Flushing Elbow Female Threads_NYFD Two types of threads areThe fire hydrant flushing elbow attaches to the 2 1 2 inch NH NST side outlet of the fire hydrant. The design of the flushing elbow is made to divert the main water force away from traffic and ground cover. A female swivel fitting allows the aluminum elbow to be pointed away from traffic.