Fire Hose Nozzle

The manufacturer would probably know more about this than would the forum members. Have you tried the mfr first?

Of course the manufacturer knows best, but I was away from office (and plant) so I thought I could google it, but I found nothing. So, I asked for help for people who may remember or estimate some rough numbers, or can point me to the right site.

Pressure where? Inside the hose? It'll be whatever the pump is supplying, regardless of flow.

After the water exits the nozzle the pressure would be 14.7 PSI. Unless you are looking for the force exerted by the water striking an object. Which I doubt.

The manufacturer is the only one who can help you. And he can't help you if you don't give him anything to work with.

Pressure in the the end of the hose and in the start of the nozzle.

I think the pressure at this point will be 14.7 psi plus the pressure drop [from the start of the nozzle up to the end of the nozzle] (which I an looking for) that corresponds to the flow (which I am also looking for).

I see from my records that you did not purchase from us any of our 60-65MM fire hose nozzles. I do not see any warranty registration documentation either. So if you send us the obligatory 500 euro fee for a tardy registration of your nozzle we will gladly send you all pertinent documentation. If you still have your original bill of sale for the nozzle from an approved dealer we may be able to discount or wave this fee depending on the date of the sale. Don't forget to indicate which of our 473 different models you have.

Depends on the nozzle type and design...there are many...65mm is 2.55 inches

Here's a typical nozzle...

Vindicator Blitz Attack

250-500 gpm for multiple size hand lines (1¾",2",2½") Capable of 325 gpm at 50 psi. NP and 500 gpm at 100 psi. NP.

http://www.1ststriketech.com/products.html

Thanks! That is what I was looking for.

Without doing a lot of time consuming and expensive testing, which would probably have a high margin of error, consulting the manufacture is the only way to answer your question. There are too many variables to get an accurate answer for your particulars.

Each model of a fire hose nozzle has its own ratings. At 60-65mm (I assume this is identical to the USA standard 2-1/2" fitting) the flow rate of a handheld attack nozzle is much lower than that of a deck gun secured to a fire engine or a blitz nozzle for use from a ground mounting.

Hose nozzles are usually purchased for the application be it a spray nozzle, a combination nozzle or a solid bore nozzle Again, consult with the manufacturer or at least their catalog.

Manufacturers usually rate the flow at the standard operating pressure for the nozzle only, not under pressurized or over pressurized. In the USA the usual operating pressures are: solid bore, 50psi; solid bore as a deck gun on an engine, 75psi; spray nozzle, 100 psi. All of these are pressures at the nozzle, not pump pressure due to friction loss in the hose.

Again, check with the manufacturer.

Good Luck, Old Salt Ex-Fire Chief

Base info, what to do and why - GA

Thanks for the info about the standard operating pressures. I am looking for the flows at these pressure.