Brass 3/4" Male Camlock Dust Plug (USA) Outlet Size_4 Inch The most common fire hydrant

The most common fire hydrant outlet in the USA is 2 1/2 inches with NH / NST threads

2 1/2 inch NH / NST barrel strainer with poppet style check valve

You should end with the nozzle end on top and a female coupling on the bottom

Dry lubricant for both storz and threaded couplings

Brass 3/4" Male Camlock Dust Plug (USA) Outlet Size_4 Inch The most common fire hydrantType "DP" brass 3 4 inch male camlock (Cam & Groove) dust plug. Dust caps and dust plugs are not to be used in pressure applications for safety and environmental reasons. Under no circumstances should cam and groove couplings be used for compressed air or steam service! Connections The male side of this adapter will only connect to 3 4 inch female camlock WARNING: This product contains a chemical known to the State of California to cause birth defects