In the early years of the American fire service there was a surprising number of cities across the country with their own unique version of fire hose thread. Over time, most smaller municipalities have converted to a more universal thread like NH or NPSH. Many larger cities have held onto their threads due to the incredible cost associated with an across the board conversion of all hose, appliances, adapters, and fire systems.
One local example of this in my area is Oklahoma City.…Continue
Added by Brian Brush on July 14, 2017 at 8:38am — No Comments