Knox Box Storz 4" Locking Cap Male Threads_NYC For use up to 175

For use up to 175 PSI (water only) at 70° F

The hydrant flushing elbow attaches to the 4 1/2 inches NH / NST outlet of the fire hydrant

Equivalent part number - HA2530T

Peel off the protective paper

The female threaded side of this adapter will only connect to a 3 inch male National Pipe Tapered (NPT)

Knox Box Storz 4" Locking Cap Male Threads_NYC For use up to 175The4" Knox Storz Lock is operated with a Knox FDC Wrench controlled by the Fire Department. To ensure the Knox Storz Lock properly fits, the Knox Company strongly encourages the use of connections that meet the adapter specifications. The Knox Storz Lock protects large diameter Fire Department connections (FDC) from accidental damage, vandalism and physical attack. Since the locking cap holds water pressure, it can be installed on hydrants. The Knox