My City is contemplating Going to 5" LDH. We currently use 4", and have water problems at significant fires. I am advocating the 5" purely from a hydraulic perspective. We currently have 2 -1500gpm triples, and 6- 1250's. The 4" has been OK. for the 1250's and our retired 1000gpm's,but now with 1500 pumps, I feel 5" LDH is needed to flow those volumes! Some disagree, and the biggest argument is the Weight of the 5" LDH hose? If you are currently using 5" LDH, please weigh in on this discussion.
P.S. I assume the Strotz couplings are different as well?