Aluminum 3" Swivel Female NH to 2 1/2" Male NH Hose Size (ID)_1 1/2" Hoses NPSH and NPT are more

NPSH and NPT are more common in industrial applications

Compatible part number - DMH2525F

The outside diameter of a 1

Compatible part number - DMH25T30T

Aluminum 3" Swivel Female NH to 2 1/2" Male NH Hose Size (ID)_1 1/2" Hoses NPSH and NPT are moreNote 3 inch NH NST is very rare and is often confused with 2. 5 inch NH NST which is very common. If you have a fire department connection (FDC), hose coupling or an adapter check the female coupling for stamped numbers and letters. Most 3. 0 inch hoses use 2. 5 inch NH NST couplings. The most common fire fitting thread in the United States is 2 1 2 inch NH NST. If you have two swivel female FDC brass connections that need plugs measure the INSIDE