Brass 4" Female Camlock x 4" Male NPT Storz Size_2 1/2" Rigid Storz NH / NST threads are

NH / NST threads are used by most fire departments

Pentagonal in shape

Debris that enters from roadside hydrant fitting opening can be removed by reverse flushing the line into the water source

making your tool easier to carry

Brass 4" Female Camlock x 4" Male NPT Storz Size_2 1/2" Rigid Storz NH / NST threads areGlobal type "B" brass 4 inch female camlock (Cam & Groove) coupler to 4 inch male NPT threads. Under no circumstances should cam and groove couplings be used for compressed air or steam service! Connections The female side of this adapter will only connect to 4 inch male camlock The male threaded side of this adapter will only connect to a 4 inch female National Pipe Tapered (NPT) or National Pipe Straight Hose (NPSH) thread, for example, PVC or metal