@Grizz and I did some testing this afternoon on equipment. Most I had done before but I wanted to show him and to verify @Innocentbystander 's comments. Brandon has pics or videos of all the below. Machine rated at 8,
Using a 15 gal enclosed container the following are real numbers on machine with 850 hours on it and running through 250’ of 3/8 hose.
Pressure at nozzle using yellow tip 2800 psi - perfect
Racer that must have been a 2.1 mm orfice. Getting 8 gpm with a 2.3 mm with 275 ft of hose. Also drawing water when not drawing soap with a three way value helps with gpm. Think most just let it suck air and could be faster rinsing.
Why not? I usually use green for testing but we couldn’t find, plus it had never been used so new it wasn’t corroded or anything. Could have used red, but we were afraid it might crack bottom of container that close.
Color of the nozzle has nothing to do with how much flow or pressure comes out, just the degree of the angle. Orifice size of the nozzle is what affects the pressure and flow.
@dperez how come? you must be doing something wrong, do you use 5/16 hose?, or run 12gpm+ on 3/8 hose, only then you can lose 600 psi in 100’ of hose. Does size matter (hose) - #18 by Racer text*
No sir, it’s 14lbs per 100’. I’ll take the psi loss as a penalty in order to never feel my hose. I washed 13 hours yesterday and checked off 88 straight trucks and 12 trailers by myself. Can’t do that with 3/8" hose
It’s easier for them to manufacture in greater psi into a hose with a smaller inside diameter. When the i.d. goes up most often the psi has got to go down. I used to run Suttner carpet cleaning solution hoses but the i.d. is metric and not imperial so I had trouble getting reusable fittings to stay on. I get all my hose manufactured to my specs now after calling on China 6 months ago and I get it sea freighted by the pallet now.