Knox Box Storz 4" Locking Cap Female Size_3 Inch They have specialized in forestry

They have specialized in forestry hoses for the past 35 years

thread and couplings in use by fire departments today is double jacket hose with aluminum NH / NST

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

Note: The most common 1 3/4 inch Mil Spec hose is coupled with 1 1/2 inch NPSH threads

Knox Box Storz 4" Locking Cap Female Size_3 Inch They have specialized in forestryThe4" 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