A+ 21" SC nozzle sizes

wjs0311

wjs0311

New member
I have a new A+ 21" SC and was wondering what the nozzle sizes were? There are no markings on the nozzles and this weekend I had a issue with stripping. I used the sc to do my driveway to test out my equipment before things got busy and had no issues. I just want to make sure I have the correct size tips for my machine. I have a Landa 3000psi 5gpm machine so I would need 2502's correct?
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5 gpm 3000 psi requires a #6 tip divided by two would be 2503's

For some reason they usually include 2502 tips with surface cleaners, which would be for 4000 psi 4 gpm machines. If you are running 2502's with that pump then you are bypassing roughly 20% of your flow.

I think that's how it works. Maybe Russ will chime in and correct me. :( : (
 
I would get 2502.5 and 1502.5 nozzles for your new surface cleaner along with 2503 and 1503 ones (for lighter duty jobs). With the 02.5 size nozzles, you will be able to maximize your unit's 3,000 psi without bypassing any water. The 03 size nozzles would likely drop your psi a bit.
 
HighTide said:
I would get 2502.5 and 1502.5 nozzles for your new surface cleaner along with 2503 and 1503 ones (for lighter duty jobs). With the 02.5 size nozzles, you will be able to maximize your unit's 3,000 psi without bypassing any water. The 03 size nozzles would likely drop your psi a bit.
Click to expand...

David. Can you please explain this to me. According to these two calculators, and every other one. The proper nozzle for a 3000 Psi 5 gpm pump is 6. I'm not trying to be funny or anything, I know you are a heck of a lot more knowledgeable in this stuff than I am. But I am trying to understand this. According to the calculators 2 2.5's would put his pressure at 4000 psi. If his unloader is set at 3000 or 3300 or whatever a 3000 psi rated pump is set for, wouldn't that start bypassing? I tried to convey this in another thread With Matt Goins and he pretty much ignored me. From my understanding a 5 gpm pump that uses a #5 tip would produce 4000 psi. A 4 gpm machine that uses a #4 tip would be rated at 4000 psi. Am I wrong. I am really just trying to learn from people who know, and I would like to know if I am sizing my nozzles wrong on my own machines.

http://www.barens.com/cgi-bin/calc

http://www.pressureparts.com/nozzlecalculator.aspx/
 
Ralph, It's been a long time since I have looked at a psi chart. My bad as I should have prior to making my earlier comment. From the 3 charts I just looked at you are correct in that the 03 nozzle is the correct one. For my 5.5 gpm @ 3500 psi set up all the charts also say the 03 nozzle is the correct one which the 1503 is the ones I use more than any (with the 2503 used for lighter duty).

I will add, however, I sometimes use the 1502.5 or 2502.5 nozzle when I am far away from my machine running through 100's of feet of hose and my psi at the surface cleaner drops to closer to 3,000 psi or less (with the 03 nozzles). I am already losing some flow by going through so many feet of hose dropping my psi. By changing to the slightly smaller nozzles (02.5), my psi will kick back up closer to 3,500 psi at the surface cleaner (per my gauges at the pump and surface cleaner) to allow me to clean better without any noticeable additional water loss in bypass.
 
HighTide said:
Ralph, It's been a long time since I have looked at a psi chart. My bad as I should have prior to making my earlier comment. From the 3 charts I just looked at you are correct in that the 03 nozzle is the correct one. For my 5.5 gpm @ 3500 psi set up all the charts also say the 03 nozzle is the correct one which the 1503 is the ones I use more than any (with the 2503 used for lighter duty).

I will add, however, I sometimes use the 1502.5 or 2502.5 nozzle when I am far away from my machine running through 100's of feet of hose and my psi at the surface cleaner drops to closer to 3,000 psi or less (with the 03 nozzles). I am already losing some flow by going through so many feet of hose dropping my psi. By changing to the slightly smaller nozzles (02.5), my psi will kick back up closer to 3,500 psi at the surface cleaner (per my gauges at the pump and surface cleaner) to allow me to clean better without any noticeable additional water loss in bypass.
Click to expand...
Thank you for the clarification. Honestly I just thought I was missing something that could be causing me to use the wrong nozzles. And thanks for adding the tip about hose length. I never factored that into my equation either.
 
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