200psi to 500 psi for carpets I feel...

I have only used 500psi and was plenty happy with it. For my next porty, I would like to stay around 500psi.

I recently went from 200 to 500 psi, and I don't think I could go back now, the difference is that big for me. You can still clean with a lower psi, it just takes a lot longer.

However, I think the more important question is how much flow is your pump going to put out. If you don't match your jets to what your pump is putting out, you'll never realize the real psi that you're shooting for.

Mr T;

500 psi.............but it better have: GOOD FLOW , or it really wouldn't matter! Big difference.


Very best;
Ed Valentine
"Smart-Design" systems

400 PSI here no matter if it's a TM or Portable..... That is my comfort spot!

try a 500 psi machine and run it at 350
2 jet wand with 9502 jets

(dual 3-stage vacs of course)

Hey Daniel,

Dry times are about the same the new pump. Even though it's putting out a TON more water. I could never go back to 200 psi. Shoot me a PM, I have plenty of picks if you want to see them.

Originally Posted by Mr.T

Does the wand that comes with the portable have the proper jets for the PSI, or do you have to match them? What would be the best jets for 500 PSI?

Again, the most important thing to remember is how many GPM your pump is flowing.

Here's a link to a cheat sheet that you can cross reference your psi and jet size. Then you'll know how much flow you need to keep up.

http://www.pumptec.com/images/other_...erformance.pdf

So to answer your question directly. My porty came with a AW29 wand with two 02 jets. At 500 psi they each flow .71 gpm or 1.42 gpm with both of them running. My pump is capable of 1.6 gpm at 500 psi, so I never drop below my desired psi range as long as I use jets that don't flow more than my pump.

Originally Posted by wesdawg67

Again, the most important thing to remember is how many GPM your pump is flowing.

Here's a link to a cheat sheet that you can cross reference your psi and jet size. Then you'll know how much flow you need to keep up.

http://www.pumptec.com/images/other_...erformance.pdf

So to answer your question directly. My porty came with a AW29 wand with two 02 jets. At 500 psi they each flow .71 gpm or 1.42 gpm with both of them running. My pump is capable of 1.6 gpm at 500 psi, so I never drop below my desired psi range as long as I use jets that don't flow more than my pump.

Wes- I'd like to know if you have ever measured your flow. If you have not its pretty easy. Spray your wand into a 5 gallon bucket for 1 minute and weigh it. Take the total weight and subtract 2-3 lbs ( the buckets weight). This will give you the weight of the water. Divide this weight by 8.33 and you get your flow rate in gpm. 8.33 lbs is the weight of a gallon of water. Mike

Originally Posted by The Flow King

Wes- I'd like to know if you have ever measured your flow. If you have not its pretty easy. Spray your wand into a 5 gallon bucket for 1 minute and weigh it. Take the total weight and subtract 2-3 lbs ( the buckets weight). This will give you the weight of the water. Divide this weight by 8.33 and you get your flow rate in gpm. 8.33 lbs is the weight of a gallon of water. Mike

Hey Mike,

I haven't used your formula before, but I'll give it a shoot when I get a chance. I've done something similar, but I measured volume not weight. For me that seems to be the most accurate way of measuring my flow. I know that most of the formulas that we deal with are used to be exact, but they don't usually take into account for imperfections in the machine or other variables like restrictions, water temp, or exactly how much voltage your pump is getting.

I guess I'm asking if you think the table Pumptec has is inaccurate? It seems to be fairly close to what I've come across in my findings.

I'll give your method a shot and compare it to my volume test. Thanks.

Originally Posted by The Flow King

Wes- The Pumptec chart is accurate and very valuable to people who want to know the power of there cleaning system. If your pressure at your SPRAY JET is 500 psi you will get that flow. I would make a somewhat educated guess that the pressure at your jet is closer to 100 psi. To know for sure you have to get your actual flow rate, then you can use the Pumptec chart to determine your pressure at the jets. An easier yet a little less accurate way to measure your flow rate is to spray your wand into a bucket for 1 minute then use a funnel to pour the water into a 1 gallon bottle. I would be surprised if you got more than a gallon. Dinner on me if you do. Mike

Do I get to eat anywhere I want?!

Just kidding.

But seriously, I know that my flow rates are accurate. I've done a lot of volume testing to get my numbers. If I do what your ask with a 5 gal bucket, my wand will put down about 1.3 gpm, I even measured it again today. The wand that I'm using is a AW29 with two 02 jets. I regulate my pump to 450 psi so I don't run the chance of hurting the motor.

If you cross reference those jets with the psi that I'm using everything adds up perfect. I know most machines down flow those numbers, but I custom built mine so I could run my tools at the psi that I wanted.

I agree with ED !!!

Flow in GPM is what separates the pump systems available today.

I like 1.6 GPM for a high-pressure portable flow rate.

Larry Cobb

Originally Posted by The Flow King

Wes- Before I buy you dinner how do you do volume testing........Mike

Hey Mike,

I measure my volume in oz when doing my tests. However, I did use your gallon container and funnel recommendation. A full gallon with another 3rd or so left over.

Basically I drop the wand into a 5 gal bucket. Set the psi, in this case at 450, then key the trigger for 60 sec. It will easily do the 1.3 gpm that I've metioned. I can even post a vid if you would like. Even if I use your wieght formula it all adds up. If there's another way you would like me to do it just let me know.

When I first thought about building the machine like this, even my supplier didn't think it was possible. With several phone calls to Shaun at Pumptec. This is what I ended up with.

Here's a break down on the pump.

It's a 205 series Pumptec pump. The pump it's self is capible of 1000 psi, but you need to regulate it so you don't blow your motor. The motor that is normally sold with this pump is the 1/3 HP M4. The pump head normally comes with a 125 eccentric offset cam bearing capible of 1.25 gpm. That's the most most people would ever see with this pump.

Here's how mines different. I still use the same 205 pump head, but I ordered a 160 eccentric offset cam bearing capible of 1.6 gpm. I needed a bigger motor to swing that bearing, so I used the 1/2 HP M58 motor. It only pulls 2 more amps, and so far I've had no problems with breakers. This pump is a beast for carpet cleaning. It's truckmount flow and I'm still only on 2 cords with awesome vac power as well. I know I can't do tile and grout with it like most truckmounts, but that wasn't something that I was after in the first place. Some day...

The biggest reason that I went this route was impact, which you have mentioned. You can clean better and faster with greater psi and flow. Most pumps systems don't put out that flow, and thus can't maintain psi when that trigger is pulled. I can clean with two 02 jets and never drop in psi, which is what I wanted.

All in all, I'm extreamly happy with the way the machine turned out. It's just flat nasty compared to when I bought it stock. Please don't fell obligated to buy me dinner, I hope you were only kidding. I'd settle for some more info on your Demon. Does it agitate the carpet while cleaning, or just rely on heavy flow? I must say, it looks like a great system as well.