Aluminum 4" Female NPSH to 2 1/2" Male NH Male Size_6 Inch You should end with the

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

or as a fire department outlet connection

Fits most pin racks

NH threads are used by most fire departments and fire trucks

Storz pressure gaskets will seal two storz hose couplings or adapters when pressurized

Aluminum 4" Female NPSH to 2 1/2" Male NH Male Size_6 Inch You should end with theAluminum adapters are fabricated from seamless extruded 6061 T6 aluminum and hard coat anodized per MIL A 8625 Type III, Class 1. Threads have a blunt start Higbee cut with indicators on adjacent lugs. Part identifications are permanent and stamped prior to hardcoat. Adapters and components meet the requirements of NFPA 1963. The Safe Water Drinking Act section 1417 requires "Lead Free" products to be a minimum of 99. 75% lead free. Aluminum Female to