Plenty enough to blast the cream straight off any driveway
So I’d wanna use 2505
Nope, that would give you 640 psi. Did you go to the website I linked you to? If not, then do.
If your SC has 2 nozzles, divide your gpm by 2 (so 2 gpm total). The rest is super easy.
25025 would be 2650psi
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So a size 2.5 nozzle is 2525
Nope. First two digits are fan angle, second two are nozzle size. If there’s five digits then it’s after a decimal. So 25025 is size 2.5
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Awesome thank you, I been reading thread after thread on here trying to understand the sizes and what not. Thank you for helping clarify that.
This chart may be a little easier for you to understand
Find the psi you want, go down column to your size machine, divide by # of nozzles you have. Easy peasy. All surface cleaners come stock with 2502 unless you special order with a specific size. You may want to get you a set of 2503’s too.
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So the psi output of the machine will be getting split between the two nozzles correct?
No, and I asked the same question a while back, the nozzles put out whatever PSI you’ve selected, it’s the GPM .that gets split between them.
Basically you’re choosing what PSI you want and adjusting nozzle size accordingly.
Read this post. It should help you understand. When looking at a nozzle chart your gpm will never change because your machine puts out what it puts out. The whole point of changing nozzles is to change the psi not the gpm so psi is what you’re looking at. You just have to make sure it puts out whatever gpm your machine has. If using two nozzles than each nozzle should put out half of whatever gpm your machine puts out. If you have a 4 nozzle bar on a surface cleaner each nozzle should put out 1/4 the gpm of what your machine puts out.
I replied to another member in this thread so that’s where the numbers come from. He has a 5.5 gpm machine.
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Outstanding, that cleared it up .
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Okay, joining the bandwagon of new guys who don’t understand the nozzle chart when it comes to a surface cleaner. I have a 3.5 gpm pump. My surface cleaner has two nozzles. If I wanted say around 1500 psi for each nozzle, I would want a pair of 2503 nozzles, correct?
Read this post. You’ll understand it afterwards.
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Brian is right. If you still don’t understand, click this link; it’s the simplest calculator you can find. Divide your gpm by the number of nozzles you have.
Also 1500 psi isn’t gonna clean well using an SC, and will likely leave overlap stripes. Most people here shoot for 2500-3k and don’t clean concrete less than 2 years old
That light bulb still isn’t going off in my head. The way my mind is processing what I’m reading is as follows. If I take my 3.5gpm/4K psi machine under its most idea conditions and in a perfect world ( a big stretch I know ) and simply hooked it up to a surface cleaner with two tips I could not achieve any more than 2k psi per a tip and with each tip putting out 1.75 gpm. The numbers would actually be less considering hoses, fittings, etc, but let’s keep it simple for me as I need all the help I can get😉). If I wanted to get the most pressure hitting the surface as I could, using the machine that I have, I would need two tips that put out 1.75 gpm and 2000 psi each. The chart that Brian shares has a 1.77 gpm option under 2000 psi and when I follow that tow back to the left I find nozzle #2.5. Which I interpret to mean I would want a pair of 25025’s. Using Jake’s calculator the equation comes out to 4.9 but that number would be divided in two since I have a 2 nozzle bar = 2.45.
Now this only makes sense if I’m putting in the right numbers and dividing by two at the correct time - not too early and not too late.
see my chart above. It has a 3.5 gpm listed. You’re way over thinking it
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Don’t divide the psi homie. Just the gpm. It’s absolutely possible to get 4k psi out of two tips, or four tips, or any number of tips running at the same time if the orifice is small enough. Just divide the GPM of your pump by the number of tips
I gave you the answer, here’s a screenshot
25025 tips (two of them) will put you at 2560 psi from each tip
2502 tips (two of them) will put you at 4000psi from each tip
*Edit: see below post. This was calculated for a 4gpm machine
Wait, I did that calculator at 2gpm because I thought you had a 4gpm machine (2 nozzles). Here’s a screenshot recalculated at 1.7gpm giving you 2800psi at each of your 2 nozzles. That was my mistake. Buy a set of 2502s
Thank you Jake. I’m still playing with the numbers in my head and on the chart to ensure I understand it, but I greatly appreciate your help / answer that you gave me!
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