How to Adjust the Pressure on a Power Washer | Pressure Washer Spray Tips

[@Powerwash]

To properly adjust the pressure on your machine, you need to know the machine's pressure (PSI) and flow (GPM) ratings. Then use your PowerWash.com catalogue or refer to our website to review a nozzle chart. Nozzle Chart - www.powerwash.com/nozzle-chart

[@seriouslycynical9507]

Buddy, you just saved me a lot of trouble and probably money. My new machine is on the way (4240 psi/4 GPM). It has an unloader and, before this video, a lot of others were showing how to adjust the pressure by turning the unloader. Thanks to you, that's not happening! All I wanted to know was how to adjust the pressure (down to between 1200 and 1900 psi) so I can safely wash my car. Now I know! Thanks very much!

[@Powerwash]

So glad we could help! Feel free to reach out if you have any other questions!

[@otis8185]

Exactly my needs as well. Want a washer strong enough for the yard jobs, but soft enough for my car. Nozzles pave the way it seems

[@Ricquisimo]

10 years ago and still going strong. Needed to bring my 3000 psi 2 gpmpressure washer 1200 psi. The explanation of the chart was perfect! Ty!

[@Powerwash]

Heyy! so glad we could help! please reach out if you need any other explanation!

[@hokimocus]

Thank you! I am a complete novice about pressure washers. Appreciate your contribution greatly!

[@Powerwash]

Glad it was helpful!

[@schmittenhammer]

Thanks! There is much more to a pressure washer than what many of us think.

[@MrBod4life]

aint that the truth. geesh

[@capicolaspicy]

Think you just solved my problem! Accidentally got one size larger pump for my TroyBilt with an AR RMW22G24, and it's putting more load than I want on the Honda engine. Want to reduce the load so I don't have to get rid of the pump since it's brand-new and the more expensive brass body one. Thank you for sharing this!

[@Powerwash]

So glad we could help!

[@capicolaspicy]

@@Powerwash went and picked up a set of 4 mm spray tips, machine running like a champ!

[@captainover-tighten6729]

Wow! 3rd video (actually started with this one - but jumped to unloader ones) I’m so thankful. Really appreciate it. Top shelf.

[@JamesBrown-ey4mt]

This is such an AWESOME video! I finally understand how to use the chart and lower my pressure on my machine. Wow! Thanks so much. You just protected my machine and livelihood. Please make more instructional videos. Gret Job!

[@tiswhatitiz]

I have a 4000 psi 3.5 gpm gas power washer per spec sheet. The unit has a 389cc Honda motor. Do you have to run the throttle on max while using gas power washers? What if you run it half? Does where you position the throttle correlate with the performance or pressure of the water coming out of the lance. Seems like one would be refueling quite often if it's running full throttle. What should the typical running time be of a gas pressure washer that holds 1.61 gallons. Much thanks for all I've been learning. Just not finding anything on throttle settings..

[@Powerwash]

It is normally best to run it at full throttle to match the performance of the pump. You can adjust pressure with the throttle but it can potentially hurt the motor over time. Most motors are designed for full performance.

[@tiswhatitiz]

@@Powerwash Thank you for your prompt response!

[@aurafangz3635]

When you get your pressure washer should the unloader be set to the max or just the setting it came as? and from there to adjust you just change the nozzle size.

[@Powerwash]

It depends on the manufacturer. Yes, you can

[@mperhaps]

I always have to waste 30 minutes on ("Hi welcome to morons garage where I talk about stuff I own but don't know how they work. Hopefully I can spread my idiocy like a virus through You Tube) before I stumble upon "Powerwash.com." I wish I would have come here first. This is exactly what I needed.

[@Powerwash]

Thank you Mitch. We try very hard to create value

[@braulioperez181]

Thanks for the video. It is a nice production and well explained.

[@paulcampbell6316]

When you increase the nozzle size does it increase the flow rate.

[@harrybaules]

I'm also curious how it affects the flow rate.

[@wldktz1]

A larger orifice should allow the same flow, but at a lower PSI.

[@cherokeefiddler]

Thanks for the video. My problem on Honda PW is that the engine tries to stall whenever the bypass is engaged- like the pressure build up is too much. I also have starting problems because of the pressure build up. As long as I keep the trigger pulled I have no problems. Suggestions? Thanks.

[@lordjaashin]

replace unloader valve

[@simonkorpiela1454]

And never start a pump without a trigger depressed

[@chrisswartzwelder8494]

Great video I learned a lot. Where do you get the nozzles that you used in the video?

[@Powerwash]

We sell them at PowerWash.com. They are called pressure washer quick couple spray nozzle for individual ones or quick connect flat nozzle set for the package of colors. Just type them into our search feature and they will pop up.

[@christophershaffer8242]

If I were to get a surface cleaner (DeWalt) rated at 3700 psi (my DeWalt pressure is a 4200) how do I turn down the pressure down to a level (3000 to 3700) so that I won't exceed 3800psi? Thank you.

[@Powerwash]

I would have to see the unit. I am familiar with equipment we sell. Generally speaking you want to go with the correct nozzle size. Also check out our videos on setting the unloader

[@BrakTalk]

What if you need to adjust the pressure for a surface cleaner attachment? I have a 3800 PSI / 3.6 GPM washer. Most surface cleaners are rated around 3200-3400 PSI. Wouldn't the unloader be my only choice here? Or do I need to hunt for and purchase a rotating head with a higher rating?

[@DanielFarnan]

You can swap the tips in the surface cleaner for slightly larger tips. If you had two tips that are size 2.0 (at 25 degree spray pattern) that would give you a combined 4.0 size orifice which relates to 3500psi at 3.5 gpm. Usually size 2.0 is the smallest i can find. You'll just need to check that 3.5-3.6 gpm is enough flow rate for the surface cleaner you have.

[@DanielFarnan]

Hey Brad not sure why i cant see your reply on here but i got an email with it in. There should be two 1/4" MEG Spray Nozzles under your surface cleaner that you should be able to unscrew and swap out with larger or smaller sizes. www.powerwash.com/v-jet-25-degree-nozzle-1-4.html they should look something like this some look a little different but basically the same thing. hope this helped.

[@nutritionandphysiology8023]

@@DanielFarnan What does "MEG" stand for? I know what they are, just not what the acronym means XD

[@DanielFarnan]

@@nutritionandphysiology8023 for the life of me I haven't been able to find out

[@kitinPL]

Hey guys! What about spikes that you covered in your video about unloader adjustment?

[@Powerwash]

Here is a video that will show you how to adjust the unloader kzbin.info/www/bejne/l4jGlZ9pm5aal9k

[@kitinPL]

@@Powerwash Ok, i have electric pressure washer with total stop system. My idle pressure is ~1900 psi. When i press the trigger it's ~1450 psi. Should i adjust unloader valve to have around 1750 psi idle pressure? (300-400 psi above of operating pressure) In this video you're telling that unloader should never be adjust to downward pressure. In linked video about unloader adjustment, you are telling about this 300-400 psi spike above operating pressure. I'm confused :(

[@timb7775]

I recently picked up a Craftsman gas powered pressure washer and it says it has an adjustable axial cam pump, the instructional video says to turn the valve counter clockwise to lower the pressure and clockwise to raise the pressure from 1,400psi to 3,000psi. I'm trying to find the correct info since I already played with that valve turning it up and down.

[@Powerwash]

axial cam pumps are not the same as the piston style pumps we use. If the manufacturer is instructing you to operate it that manner then you should be OK

[@maniacalmonster2293]

Alright Alright Alright what color are the nozzles that are below 2000 psi?besides black of course

[@Powerwash]

Nozzle color are in reference to the spray pattern not the size.

[@peterford9369]

Question. I have a zr2700 machine that runs 2700 psi at 3 gpm. My gauge reads around 3000 when not spraying but goes to 1100 spraying. Tops. Does that sound like the unloader in your opinion? I've ordered a new one after opening up my unloader valve and it's got pits and wear on the internals. Seems very sticky even after I cleaned it up. Guess I'm looking for assurance that the new valve will fix it. Thanks for the video. I'll know now to check my tips size. That's a heck of a lot of difference. 2000 pounds just by changing the tip. Thanks again.

[@Powerwash]

Could be a bad unloader or improper setting

[@peterford9369]

@@Powerwash Thanks so much for the reply. You are correct. Was the unloader. I had removed cleaned and greased my old one. With very minor pits and etching on the valve tip and seat. But still would not raise pressure beyond 1000 psi. Bought a new unloader with valve and it now works like new. Am pleasingly surprised that a little bit of etching and pitting on the valve and seat could cause such erratic power and low pressure. Thanks again for writing back with advice.

[@SamNguyenV]

Thanks for the tip! I never paid close attention to pressure washer. I bought some nozzle tips at home depot and put them on my old 4GPM Honda pressure washer, thinking they all the same. I was wondering why the engine keep getting stalled out. I now realized those nozzles probably around 2.5 GPM, since most Homedepot pressure washers are for home owner use. The mistake cost me a leaking pressure pump. Lesson learned.

[@DisciplineNation1]

I accudently changed my un-loader does it matter where its at?

[@Powerwash]

It needs to set properly. There is a video on this channel that will show you how to set it.

[@DavidC1]

Hey Mike, do you know if i could damage my engine or Pump if i'm pressure washing at 60% or 70% Throttle---I was choosing to run at lower rpm's in an effort to reduce pressure. I think my pressure washer is around 10 or 12 HP , i know there are a lot of variables but just curious if there is a rule of thumb etc.... i should be following. Next pressure washer will be purchased from you guys for sure..

[@Powerwash]

It is not recommended because the engine is not designed to run a lower RPM. If you most do it only do it for a short time. But the best practice is to keep the engine running at full RPM.

[@DavidC1]

Powerwash.com thanks! Had a feeling It was under too much load at half throttle. (Was just quickly washing my car)

[@muckman46]

Where can I purchase size 9 nozzles for my pressure washer?

[@Powerwash]

Give us a call and we can help you out. 1-800-433-2113

[@crazyhorseracing6130]

What are you talking about numbered nozzles?? I thought the went by degrees?? Thanks for the videos!!

[@Powerwash]

Check out the nozzle calculator powerwash.com/nozzle-size-calculator/

[@0hleg]

It’s ok to change nozzle while the machine is on? Or when you haven’t flicked a on off valve to off? Seems dangerous.

[@Powerwash]

No problem at all with a trigger gun. When the gun is released there is no pressure thru the wand and nozzle. So it is safe to change the nozzle.

[@jws3925]

My wand does not have removable tips but rather a screw type head that adjusts the pattern only. What are your suggestions with this setup? Should I purchase a wand with replaceable tips?

[@ethomazin]

Great I love that Tip I have a question...I have a landa hot water 1500 psi...is that possible to increase the PSI changing Pump or any Part??? Thanks

[@asemermiah283]

I have 4000psi machine that I would like to connect to Hydroforce sx 15 surface cleaner which only accommodates pressure between 800 and 2200. How could I reduce the pressure without the nozzle?

[@brianpeterson3314]

I'm wondering if you can increase psi with this same principle and reduce the orifice size or is this a bad idea? The reason I ask is that I have a Generac 2500 psi pressure washer and their 2800 and 3100 psi units are the exact same engine and what looks to be the same pump. So how are they changing the psi output unless they are adjusting the unloader?

[@Powerwash]

If it is the same pump and unloader than it would be a smaller nozzle with a different setting on the unloader.

[@OdinsCloud]

Sure you could if the unloader will allow it BUT the pump is rated for a certain pressure and you risk premature seal failure and other problems.

[@samuelthomas9637]

Hello, is there something I can attached to take a 4000 psi pressure washer to 500 psi?

[@Powerwash]

of course! you can just change the nozzle size. Here is a link to a nozzle size calculator powerwash.com/nozzle-size-calculator/

[@jws3925]

I searched for you video on adjusting the unloader but was unable to locate it. Could you post the link? Thanks

[@cameroncrane3770]

So if I have a 4200psi 4.0gpm unit and looking to drop it to 2000ish but the chart has like 3.89 or 4.24 or something which should I go with?

[@LightYourPathwithPastorSteve]

Awesome...thank you...Had no idea how to control the pressure on a power washer

[@rmedina1886]

How about when you have a surface cleaning attached?

[@Powerwash]

To address using a surface cleaner with your power washer, you can follow these key guidelines from the video: *Pressure Adjustment:* Adjust the pressure by changing the nozzle size, not by modifying the unloader, to avoid wear or damage. *Nozzle Size:* Use the nozzle chart to determine the correct size based on your target PSI and GPM. *Test for Desired Pressure:* Start with an estimated nozzle size and adjust incrementally until reaching the ideal pressure. Surface cleaners generally need consistent pressure for optimal results.

[@justinstorriemtdfb]

Hi looking for advice my petrol pressure washer is losing power this problem comes and goes. But it's happening too often now thanks.

[@kitinPL]

What is the best place to put pressure gauge (on spray gun inlet or outlet, or maybe pressure washer outlet) and does it matter?

[@Powerwash]

best place is at or near the head of the pump

[@kitinPL]

@@Powerwash Thanks for quick answer!

[@colekramer4014]

His so I have a 3200 pressure washer and it’s not on that chart and I was wondering what size nozzle I need. I think it’s 2.4 gpm

[@Powerwash]

Go with what is the next higher or lower size. For instance pic 3000 PSI at 3 GPM 3500 PSI at 2 GPM

[@colekramer4014]

@@Powerwash ok I’m trying to get down to around 1900 psi so how would I figure that out on the chart

[@sergioramio]

excellent dude

[@victorvelazquez681]

I have a 3000psi 2.5 gpm washer. I need a nozzle safe for washing cars. I'm thinking around 1200psi. Can tell me which nozzle to buy from your website?

[@Powerwash]

You will need a size 3 nozzle www.powerwash.com/pressure-washer-quick-couple-spray-nozzle-40-degree.html

[@danielstapleton8875]

So if the nozzle size for the 2.5 gpm is 2.5 to reach 3000 psi, you are saying go up 1/2 a nozzle size to go from 3000 psi down to 1200 psi? No way. More like a #5 nozzle or even larger.

[@michaelknighton6647]

What's the best way to keep pressure and save water? I use a water 60 gallon tank and need to be able to do more on one fill up,help plz.

[@jesusblessthesecommentsamen]

How low can you drop a surface clean is it the same as same a wand looking at a 4gpm 4000 psi unit ?

[@Igor-q3f]

When your working pressure is 4000 psi and you close the trigger the pressure jumps 300-400 higher, is it safe for the hoses?

[@Powerwash]

All hose have a rating on them. I would look for one with 4500 PSI or greater. Some brands are better than others so take note and use quality hoses

[@Guillotines_For_Globalists]

Where does the unloader divert water to? I don't see any connection between my unloader and the inlet of my pressure washer. I am a bit confused to be honest. I have a used NorthStar 2000 psi 110 volt unit with a Cat pump. I picked it up for free from work, as they were under the assumption that it no longer worked. It definitely works. I'm not sure how much pressure it's putting out, but I seem to be getting a very slight drip, drip, drip from the thermal protection valve. There is no tube hooked up to that valve, either.

[@wjackstl]

the unloader was most likely diverted to a water tank, to cool the water, because the water heats up so quickly while in bypass, usually because of the restricted length of pipe, hence routing the bypass pipe to a tank - more area for water to cool. obviously heat is always the enemy of mechanical parts nice find btw, cat pumps are awesome and so is there customer service

[@DanielFarnan]

You probably have an internal unloader bypass connection. You'll find it at the end of the pressure washer underneath where you attach the pressure hose. It diverts high pressure back into the lower pressure input hose and circulates without over building pressure. You just have to be careful how long you leave the trigger closed and putting the unit into bypass because it will build up heat and cause premature seal failure. With your type of pressure washer the unloader is integrated into the head of the pump.

[@Guillotines_For_Globalists]

Daniel Farnan Thanks for the information. I haven't used in in awhile but it definitely works. I always turn it off if I don't plan on using it for a few minutes rather than let it heat up with no where for the water to go!

[@MrBod4life]

Will it harm my power washer in anyway if I play around with dropping PSI like demonstrated in this video/

[@Powerwash]

it will not harm your power washer if you do as shown in the video

[@alanalan-mq8yw]

I saw where there is variance from pump head gauge to inline guage, like 500psi drop at discharge outlet from pump head, in other words if you adjust unloader using outlet guage(vrs pump head guage) to equal rated psi of pump it could be 500 above the rated pump psi, so know your variance from pump to discharge outlet(ie. 20% etc), thanks for vid, newbie with EB4040HC(belt) on the way. Also any issues over longterm with pump mounted guage(leaks etc)

[@Powerwash]

Been using pump mounted gauges for years. They hold up about the same as being mounted anywhere else on the unit.

[@anextday]

Can someone tell me where online i can buy nozzles with a hugh variety...amazon kinda sucks..thanks....i have a 2800psi and 2.5gpm pressure washer.....thanks

[@bilalsdetailingpressurewas7997]

Got a question Mike. I'm going to pick up the Northern Tool Steam Boiler attachment. It has a steam nozzle but I only need 1000 psi for autos & possibly 1000-2000 psi for boats. I've only seen one steam nozzle & don't believe there are variable nozzles.

[@noby5711]

"Got a question Mike" hahaha you fool.

[@alihapali]

Hi can you tell me what to do if I want to keep the psi but lower the flow please Thank You

[@Powerwash]

You could possibly slow down the motor.

[@alihapali]

Thank You

[@alihapali]

I did but the presure drop too

[@Powerwash]

It is best to use a machine that is rated for the GPM you want to use. Slowing down the machine will reduce pressure and GPM.

[@fatfat6389]

put a smaller nozzle now. But don't rev up the motor because the flow will increase as well :)

[@anextday]

So i dont want to sound stupid ok...just want to make sure im correct...so based on the chart and having a psi of 2800 and gpm of 2.5....a size 3 or 3.5 should be ok for my machine right...???.. thanks in advance

[@Powerwash]

Yes, that is correct. You will need a 2.5 nozzle.

[@anextday]

@@Powerwash A 2.5....ok thanks...i was way off....lolzzz....thanks again much

[@Powerwash]

@@anextday Test with both because a 3.0 may also work. It will be one or the other. Machines are not always 100% built to specs.

[@anextday]

@@Powerwash ok thank you very much....i'll check them both.

[@DavidC1]

great video very informative

[@embodiedbillionaire]

Love your vid bro bro

[@plamenplamenof3567]

UPDATE:1 year and still cranks within the first 2-3 pulls. Probably will buy another when this one finally does bite the dust kzbin.infoUgkx43QMbQqu67IZadu9ou8Sg1BdrunMRNqX . No issues at all. Very happy with it.UPDATE: After 6 months of use and over 70 uses I would still highly recommend this pressure washer. It does vibrate a decent amount but never had it “walk” like others have mentioned. No oil leaks, still seems to run like the day I bought it. Still cranks within 2-3 pulls every time. Very happy with my purchase!Have used it about a dozen times now. Plenty of power, cranks up on 1-2 pulls every time. My only complaint would be I wish it was a little taller to make it easier to walk with it (hits my ankles a lot) and that the two hose connections were a little further apart but it hasn’t caused me any issues. Seems to run a good 1-1/2-2 hrs on a full tank, overall a well built machine and definitely worth the money in my opinion.

[@Johnny53kgb-nsa]

Can you adjust the pressure by changing the tip size?

[@brandonabel9883]

Did you watch the video?

[@Johnny53kgb-nsa]

@@brandonabel9883 No, I just stopped by to ask a question, lol. Yea, I watched the video

[@brandonabel9883]

@@Johnny53kgb-nsa thanks for clarifying

[@peterhewel8984]

How about the throttle on the engine?

[@sundown798]

Peter Hewel Yup that's how I do it as well as what the dealer told me. As long as you have a long throttle powerband. Never had issues.

[@Guillotines_For_Globalists]

Doesn't work for electric units.

[@TheBudgetMindedMotorist]

I think that would drop flow as well right? Not always a big deal but something to keep in mind

[@royemunson100]

Can you please help me? Have a 3400 psi 2.5 gpm trying to lower it from 1200 to 1300 psi. What size orfice would I need on 40 degree nozzle tip?

[@OdinsCloud]

about a 4.5 nozzle

[@MrBod4life]

@@OdinsCloud Will this harm the pressure washer pump in anyway by increasing orifice size while reducing PSI?

[@billcoley8520]

Sir I mean 0 disrespect but if a person like myself uses a ball valve they can adjust the water pressure quicker than they can fart. When I am going to wash a pool deck I start with very little pressure and work my way up. Especially with the fancy surfaces they have today. I did subscribe tho

[@demolitionbarbiedoll]

Bill coley is a complete weirdo (however I feel obligated to subscribe to his channel)

[@LifeofForestFall]

Where do you put the valve?

[@Hungrybird474]

I have a Simpson 3100 with a Honda motor and the blue cap on the bottom was sprinkling before I blew it off somewhere and water runs out under the machine but still works when started and triggered

[@peterford9369]

Sounds like the overheating valve blew. I know most machines have pressure relief valves. Never had one blow but should be common. May have to get a new valve. Not sure if they are resetable. Good luck. I'm sure it's fixed by now. 🍀

[@J.Plunkett]

l have two hose reels rated at 3,000 psi, my machine is 4,200 psi how can l drop the psi on my machine so that l can use my 3,000 psi hose reels. Thanks

[@jasonl8326]

Jeremy Plunkett Can't you just use wider tips (less pressure) to bring down psi strain on hoses? Buy 4200 psi rated hoses (they're not very expensive)?

[@billcoley8520]

I recently bought a 4000psi 3.5 gpm from northern. Because my old one was weak. The driveway washer I am using is floating above the concrete Is there a way to adjust the psi but not the water flow

[@frankville366]

NS = SquareRoot(4000/PSI)*GPM GPM = SquareRoot(PSI/4000)*NS PSI = 4000*(NS/GPM)^2

[@joedoe3366]

How would you lower the psi on a surface cleaner?

[@Powerwash]

by putting larger nozzles

[@noy6184]

i bought 2800 psi washer, what size nozzle do i need to drop to 1500 to 1700psi? can i order from u

[@Powerwash]

I really can't answer your question without knowing GPM. Yes you can order from PowerWash.com

[@Powerwash]

Here is a link to the nozzle chart that will tell you the correct nozzle size www.powerwash.com/amfile/file/download/file/32/product/589/

[@jamaalbrown2331]

Can I have a unloader bypass for a 4gpm unit without a water tank

[@jheissjr]

Do you have a link to the unloader adjusting video?

[@colekramer4014]

Where do u get these nozzles from?

[@Powerwash]

We sell them at PowerWash.com

[@colekramer4014]

@@Powerwash ok I bought a gage and just tried it out and before I press the trigger it says like 3100 but when I hit the trigger it’s down to 2200 psi and I’m trying to get to 2000

[@BadWeatherfreak]

I have the same pressure washer and after 3 hours of using it it turned off and when I turn it back on it was creating any pressure and was like sputtering

[@Powerwash]

Power washers can be damaged easily if allowed to run to long without pulling the trigger or supplying it with a low amount of water.

[@BadWeatherfreak]

@@Powerwash what you think about using a honda gx390 engine with a 5.5 gpm pump?

[@Powerwash]

@@BadWeatherfreak You can do that. You will get about 2500 PSI max with a motor of that size.

[@BadWeatherfreak]

@@Powerwash which is perfect. I have a 4000 psi and ended up changing nozzles on surface cleaner

[@Powerwash]

@@BadWeatherfreak Here is a link to a nozzle chart to help you find the correct size.

[@majorpayne5289]

👍Good info, good video. Thank you. I’d like to have that book he’s reading on those nozzles. At any rate, thx for the info. 👍✌️

[@Powerwash]

That is the nozzle chart that we include in every catalog. You can have a catalog for free! www.powerwash.com/catalog-signup.

[@majorpayne5289]

Powerwash.com - thank u very much! 👍✌️

[@davide3129]

Excellent

[@OBS-5.8_JAKE]

my crafstman i got for free is 2550 and has parts chart on it with cerial numbers and evrything and the presures of each nozle i thought it was rlly cool but i wanted something with 3000

[@REPINSTR8BAMA]

Do you sell a size 12.00 orifice nozzle?

[@Powerwash]

Yes we do

[@BlackHawkPSU]

Hmm, my CAT pump manual states this "UNLOADER TYPE: An integral unloader with built-in by-pass is part of the discharge manifold to provide system pressure regulation and pump protection." So who is right, CAT or this video?

[@DanielFarnan]

The video and the manual state the same thing. An unloader is a protection device and is to be set to kick into bypass when the pressure is built up to a level that is the limit of the pressure washer. So a 4.0 gpm 4000psi needs to have an unloader set to 4000psi so when the trigger is closed on the gun and the pressure builds up the machine will go into bypass and not continue to build pressure in the pressure hose. So you shouldn't adjust your unloader down to kick into bypass at a lower pressure because it will constantly run in half bypass mode and wear out and break which could damage the pressure washer or the operator by bursting a hose.

[@cybernessful]

I don't understand then why manufacturers attach an adjustment knob to it? If you're not supposed to turn it, what is the point?

[@OdinsCloud]

@@cybernessful You can make MINOR adjustments with it. Also since there is variability in engine performance, pump to pump, pulley or gearing the unloader is adjustable to place the system in to spec for your pump.

[@Shrimp_Insurance]

​@@DanielFarnan Thank you for this explanation, pity I had to scroll down to literally the last comment on the video to find it

[@DanielFarnan]

@@cybernessful overtime the spring in the unloaded will compress slightly and it'll need adjustment to get back to the correct pressure activate

[@sergioramio]

can i get say a 1300 psi down to 40 psi? 4 zero

[@drainmonkeys385]

Cat pumps.. lol. Yea they are decent, But giant pumps are the absolute best. I’ve got a Giant P4130 which was manufactured in 1996...I use it a couple times a week..usually run 200 gallons, maybe 300-400 on each job.. and my pump has never been serviced.. the only thing I have changed is the motor maybe a couple times... in 26 years... the pump is the best on the planet

[@allaboutcleaning]

Are you saying that white tips are different sizes?

[@OdinsCloud]

No different angles 40º for white I believe. on the nozzle shaft there should be am engraved number and that is the size of the nozzles orifice against some standard of which I do not know. Anyway it will say 2.4, 4.0, 4.5 5.0 etc... a 40º nozzle or a 15º nozzle of the same orifice should yield the same pressure.

[@Drews2206]

Where can I get a #9 nozzle ?

[@Powerwash]

www.powerwash.com/

[@Drews2206]

I checked and it only shows 4, 4.5, 5 and 5.5

[@Powerwash]

@@Drews2206 Please call the office at 1-800-433-2113

[@Powerwash]

We have them, sure them why the aren't showing up for you

[@NELSONG12]

Thank you

[@chrisshutt3319]

Trying to find out where the spring for the gov.

[@chrisshutt3319]

Where does the spring hook on too

[@petrus19881]

In your previous video kzbin.info/www/bejne/Y3S9nKNppKeqf8k ; you spoke about pressure spikes and calibrating your unloader so that the spike doesn't exceed 400 psi when you release the trigger. In this video when you're using the smaller nozzles your pressure spike is a few thousand PSI due to the how much the nozzle reduces the outgoing pressure. Isn't this bad for the machine? or is there something I'm missing?

[@Powerwash]

The nozzle is actually larger and it is not bad because the spike is not going over the set spike pressure.

[@petrus19881]

@@Powerwash could you give a little more of an explanation please. I don't really understand

[@UnderPressurePowerWashingLLc]

Exactly right..

[@newcreation07]

The size of a pressure washer is really just the amount of gallons per minute of water it puts out at 4000 psi.

[@cybernessful]

I don't understand then why manufacturers attach an adjustment knob to it? If you're not supposed to turn it, what is the point? Moreover, a lot of manufacturers clearly say in manuals that this is pressure regulator.

[@sneakyguy4444]

Some have been designed with brass etc to be able to handle changes like that

[@Hungrybird474]

Dang I just start them up and go but only up to 3100 light duty

[@kattubadibhagavan8292]

HONDA POWER SPEAIR 2.28 KV G K 200 3600 RPM COST FORWARD

[@rcmodelr]

The "About" text could use editing... It says "Larger orifices are low pressure tips. Smaller orifices are low pressure tips." It SHOULD say "Larger orifices are lower pressure tips. Smaller orifices are HIGHER pressure tips."

[@Powerwash]

Thank you for that catch. We updated the comments.

[@glenmeisner5703]

Well...that depends on how you look at it. For a constant flow rate, a larger orifice yields a lower output pressure. For a constant pressure, a larger orifice yields larger flow rate and conversely a smaller orifice yields a smaller flow rate. BTW, I just watched the video and found it very informative and helpful. Thanks.

[@wroomauto7615]

Thanks

[@RC_Aviator]

1200 psi and 1050 psi sure do look the same on the guage

[@lulutileguy]

me just learning

[@legin3753]

This must be why i have less pressure i got nozzles on amazon and its way worse

[@yosiirlouis7763]

Can somebody please help me and give me real professional advice?: I’m trying to make some side money and I’m looking at this 4400psi Simpson . I’m mainly going to be doing drive ways and side walks . No I don’t have a tank I’m going to be using there water and charging vary low Since I’m doing that. 20-30$.

[@HetselGolf]

you need a tank. message me I can help you out

[@jasonl8326]

Just don't be enticed with the cheap price of Simpson 4400 psi; there's a reason the Simpson 4400 psi is cheaper than the Simpson 4200 psi, and that is because Simpson 4200 has a Honda engine and the Simpson 4400 does not. Honda engines are much better quality and last longer; Simpson engines can have starting issues also. Make sure to use 3/4" hose for water supply. Don't undersell yourself either; you're not charging enough. Very low bids can even make potential customers not take you seriously; you may also find yourself a rushing through jobs and cutting corners in order to make it worth your while, which will hurt your reputation in the long run. Give a nice fair price, take your time and do an excellent job, and referrals will start coming in from your previous customers. Good luck!

[@ourymaci8601]

Mohammed Jalloh

[@markb3292]

Why do most power washer mfrs. mislead by putting big adjustment knobs on the unloader & calling them regulators? And come with one-size-fits-all nozzles with NO mention in the manual that others are available that can be a better match?

[@Powerwash]

The big nobs are there to adjust the unloader but it is common to misinterpret the intent. The are not there to adjust the pressure. Having one nozzle size reduces confusion.

[@BlackHawkPSU]

Hmm, my CAT pump manual states this "UNLOADER TYPE: An integral unloader with built-in by-pass is part of the discharge manifold to provide system pressure regulation and pump protection." So who is right, CAT or this video?

[@rick928]

CAT!