Nozzle sizing

[NewYorkBoraPL 22]

I will be doing my first stucco cleaning next weekend. I have done a lot of research, but still have a few questions. My rig is a 2500 psi 2.5 gpm. I want to buy some nozzles with a larger orifice size to lower psi to around 500 or 600 psi without sacrificing water flow. Basically I want to run maximum engine speed(RPM) and reduce the PSI not to damage the stucco. Also I want to give Sunbrite Powerhouse mixture a try. Anyone have anything negative to say about this. The stucco is 7 years old and has a buildup of algae, mold, black spots in some areas, no rust that I can see but you never know. Thanks a lot.

[taselton2 14]

I will be doing my first stucco cleaning next weekend. I have done a lot of research, but still have a few questions. My rig is a 2500 psi 2.5 gpm. I want to buy some nozzles with a larger orifice size to lower psi to around 500 or 600 psi without sacrificing water flow. Basically I want to run maximum engine speed(RPM) and reduce the PSI not to damage the stucco. Also I want to give Sunbrite Powerhouse mixture a try. Anyone have anything negative to say about this. The stucco is 7 years old and has a buildup of algae, mold, black spots in some areas, no rust that I can see but you never know. Thanks a lot.

YOU SHOULD BE USING A 3 OR 3.5 NOW, PROBABLY A 10 OR SO WOULD BRING YOU DOWN WHERE YOU WANT TO BE. I DON'T HAVE MUCH EXPERIRNCE WITH 2.5GPM, BUT THAT IS PROBABLY PRETTY CLOSE.

[John Orr 206]

An 8 will give you about 500 psi and a 9 will be approx 250. Sorry, my nozzle chart doesn't go that low.) I have never used Powerhouse, but if you do not have chlorine in your mix, you may want to reconsider.

[PWkid 79]

Tim Aselton why are you always yelling. It is very hard to read with the caps on.

[taselton2 14]

An 8 will give you about 500 psi and a 0 will be approx 250. Sorry, my nozzle chart doesn't go that low.) I have never used Powerhouse, but if you do not have chlorine in your mix, you may want to reconsider.

I FIGURED 10 WOULD PUT HIM CLOSE. JOHN, I LIKE THE LOWPSI.COM URL, GREAT FIND. ARE YOU A SOFTWASHER OR DO YOU USE A PRESSURE WASHER TO CLEAN HOMES? NICE SITE ALSO!

[taselton2 14]

Tim Aselton why are you always yelling. It is very hard to read with the caps on.

sorry man, i just don't like taking the time to capitalize. my bad, i don't even know i'm doing it.

[taselton2 14]

I checked my nozzle chart this time, and I believe a 7 will flow 2.47gpm @ 500 psi, or a 6.5 will flow 2.52gpm @ 600psi if your pump is flowing properly. Please correct this if it isn't right.

[Washaway 64]

Tim Aselton why are you always yelling. It is very hard to read with the caps on.

Mel, atleast he's consistent.

This Is Much Worse....Every Time I Read His Posts I Get A Headache!

(I don't remember the poster off the top of my head.... still I mean no offence. All in good fun.) :)

[NewYorkBoraPL 22]

Thanks for the information. By the way the powerhous mix does not contain a bleach in the ingrediants. I was browsing through chemistry store and was not able to find sodium hypochlorite. Is Sodium Percarbonate a good substitute or should I purchase elsewhere. I also would like to add some TSP to the power house solution.

[taselton2 14]

Mel, atleast he's consistent.

This Is Much Worse....Every Time I Read His Posts I Get A Headache!

(I don't remember the poster off the top of my head.... still I mean no offence. All in good fun.) :)

None taken Vanilla, all in good fun.

[Washaway 64]

Vanilla...I like that:)