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The male threaded side of this adapter will only connect to a 1 inch female British Standard Pipe (BSP) thread
The male threaded side of this adapter will only connect to a 1 inch female National Pipe Tapered (NPT) or a National Pipe Straight Hose (NPSH) thread
2 1/2 inch NH / NST threaded fittings actually measure about 3 inches across
Aluminum breakable cap prevents entry of foreign materials and protects the female threads on pin lug fire department inlet connections (FDC)
Type "E" aluminum 4 inch male camlock (Cam & Groove) coupler to 4 inch hose shank
Knox Box Standpipe Lock 3" Female NH/NST Locking Cap Length_25 Feet The male threaded side ofThe Knox Standpipe Lock protects standpipes, fire and wall hydrants from accidental damage, vandalism, and physical attack. Since the Knox Standpipe Lock holds water pressure, it can be installed on hydrants. The Knox Standpipe Lock is available for 2. 5 connections with varying thread options and is operated with a Knox FDC Wrench controlled by the Fire Department. Protects dry and wet standpipe outlets in stairwells from vandalism Reduces
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