Hoses (NH vs NPSH)

The most common thread type in use by fire departments today is NST or National Standard Thread. It is often referred to as “fire hose thread”.

Fire Hose Leader Line Wye - 2-1/2 In. NH X 1-1/2 In. NPSH

Aluminum 2 1/2 Storz x 2 1/2 Male NH Thread

Common Types of Fire Hose Thread

Blue 1 1/2 x 50' Potable Water Hose (Brass NPSH Couplings)

Fire Safe 8612011 1-1/2 Inch Female NH/NST x 1-1/2 Inch Female

What is the purpose of lugs on a fire hose coupling? - Quora

Yellow 1 x 100' Non-Collapsible Lightweight Hose (Alum 1 NH

Explaining Common Fire Hose & FDC Thread: NPT, NST & More!

How is a fire hose connected to a building? - Quora