Blue 3" Polypropylene Male Safety Bump Plug Female Threads_GHT NH/NST is common in the

NH/NST is common in the fire service

brass angle valve

The male threaded side of this adapter will only connect to a 2 1/2 inch female National Pipe Tapered (NPT) or a National Pipe Straight Hose (NPSH) thread

Beveled rubber stopper completely shuts off water flow from sprinkler head orifice

Blue 3" Polypropylene Male Safety Bump Plug Female Threads_GHT NH/NST is common in theSafety Bump an alternative choice to the traditional cam and groove plugs providing a comfortable handle for the drivers hand and a "bump" that extends beyond the hose fittings and ears, protecting them from damage. Safety Bump is not rated for Pressure.