My department is looking into purchasing Low pressure nozzles. I've done a lot of research on the topic and by no means want to start the smoothbore vs fog nozzle debate. I've read the fire streams management handbook and enjoy any article written by the later Andrew Fredericks. I believe there is a right time and place for both, but as in most departments there is a vocal few who refuse to change for any reason. Currently we operate with all 100psi fog nozzles on our 1 3/4 lines set at 95GPM and have our PDP preset at 90 psi. Please, I don't need the math about how screwed up that is, this is the hole reason for looking into LP nozzles. I believe we need a minimum of 150GPM, but without blowing their minds with high PDP and NP. I want to keep the reaction forces between 60 & 70 for our outside station who operate with 2 on the line. I was told the reason we've always pumped so low is for line maneuverability, we run 4 on our central station engine and 3 on our outside engines. I'm a 15 year veteran and until now was not in a position to change this. I would like to set the engine up so that the officer has options based on conditions and personal preference, smoothbore and fog nozzles.
I understand the break-apart nozzle concept, but honestly don't believe anyone will unscrew the fog head to use it as a smooth bore in a fire. I'm not apposed to break-aparts for the ability to clear the line of debris, I just don't want to really on them as our smoothbores.
OK, enough of that! My main question is what brand and more importantly what GPM/PSI LP nozzles do you recommend and if a break-apart, what slug tip size and why? There are so many options to choose from. There is 150/50, 150/75, 175/75, 200/50, 200/75 and 7/8,15/16 and 1" slug tips.I plan on doing some comprehensive testing with several different nozzles using a flow meter and pressure gauge, but my OCD requires me to inquire prior to my own tests.
Like I said before, I want to keep reaction force around 60 and have a nice tight straight stream with good distance and a GPM between 150-180. If you know of an LP nozzle set-up that will give me that, I would greatly appreciate the info (please don't say a smoothbore). Thank you and stay safe.