Aluminum 1 1/2" Female NH to 1 1/2" Male NPSH Threads_GHT 5" marine hose is coupled

5" marine hose is coupled with brass NPSH threads

Brass is commonly chosen for corrosion resistance

hydraulically dependent pressure differential relief valve

Female red dry hydrant adapter with aluminum NH / NST plug

Aluminum 1 1/2" Female NH to 1 1/2" Male NPSH Threads_GHT 5" marine hose is coupledUSDA Forestry Service fire hose reducer feature aluminum coupling with a 600 PSI test pressure. Meet Forest Service Spec 5100 107. Female 1 1 2 inch NH, 9 threads per inch and male 1 1 2 inch NPSH, 11 1 2 threads per inch. Meets National Fire Equipment System (NFES #0006). Water Handling Accessories flow rates are 100 PSI flowing pressure. Fire hose reducer female adapters comes with a gasket. This Wildland Fire Equipment adapter or coupling is used