DIY Waterfed Pole RO DI Cart - Full Build

SCHEMATICS
Carbon Filter Diagram
drive.google.c...
RO Membrane Diagram
drive.google.c...
DI Tank Diagram
drive.google.c...
PART LINKS
TDS Meter: amzn.to/3Q91mt8
Simpure 4x10 Filter Housing: amzn.to/3pRbX17
Carbon Filter (2pk): amzn.to/3pRbZGh
1 NPT to 3/4 GHT Adapter: amzn.to/3Y0TBr4
Thread Tape: amzn.to/46Wb4EZ
Axeon 4x40 RO Membrane: amzn.to/3rH0php
Stainless RO Membrane Housing Kit: amzn.to/3Orpki1
1/2" PVC Plug: amzn.to/3K6rxMY
3/4" PVC Elbow - MNPT to FNPT: amzn.to/3pXf0EP
3/4" NPT to 3/4" Barb: amzn.to/470GOZF
1/2" NPT to 3/4" Barb: amzn.to/3Y68fgO
3/4" Spigot: amzn.to/3NZoo2V
3/4 Female GHT to 1/2" Barb: amzn.to/3rLBkle
3/4 GHT to 3/4 Barb: amzn.to/3rH1HsL
Hose Clamps: amzn.to/3rDUv0y
3/4" Poly Hose (10ft): amzn.to/44WZB6e
Vaseline: amzn.to/3q1DfBV
Hand Truck / Dolly / Cart: amzn.to/3XQgkYq
(This dolly is a lighter weight option than the one in the video. We’ve used it on WFP cart 2.0 and it’s been great)
Bedliner Spray: amzn.to/3Ya1Z7B
Xero DI Tank: windowcleaner....
Xero Pro 30 Waterfed Pole: windowcleaner....
Alternative Pole - Tucker 30ft Carbon: amzn.to/44shOZH

[@denaliwindowservices]

I wanted to send out a genuine thank you. I used your info and built my system to just about mimick yours. Turned out great and works awesome. I appreciate your time and effort.

[@pressurewashnerds]

Thanks for the kind words! Glad it worked out for you and saved you some money haha

[@davidseigo7978]

This is rad. What did your pricing come out to?

[@markrwc6185]

I know this took a great deal of time and effort. You did a great job. Thanks for the information.

[@pressurewashnerds]

Yes it did! Hope it helps

[@johnshoemaker6164]

One thing I didn't catch was where the bypass/discharge line goes to. Would that be just on the ground, or where? Great and thorough explanation by the way! Very much appreciated.

[@pressurewashnerds]

Yep! I just adjust the hose so it discharges into the grass or away from the cart onto the concrete. It’s just hard water discharge

[@nicovalenzuela4044]

Thank you for this video! So helpful and thorough. Been looking for something like this since those setups on wcr are crazy expensive.

[@pressurewashnerds]

Glad it was helpful!

[@DarkAgeSwarm306]

you're such a G for making this cheers bro

[@pressurewashnerds]

Haha glad you enjoyed it! I’ll be dropping a version 2 here soon that’s a little more lightweight. Original cart is still running strong though!

[@57cbo]

Thank you for the informative video. Thats what I want to build exactly.

[@pressurewashnerds]

You’re welcome! It’s served us well so I hope it’ll work great for you too.

[@WhiteCloudWindows]

The hand cart linked is not the same model as shown in the video…if I am seeing things correctly. Lacks the think metal back straps that seemed to make your mounting solution viable.

[@pressurewashnerds]

The cart I used was a super heavy Milwaukee. I’ll update the link to the aluminum one I used for the new build, video coming soon. It has plenty of cross members

[@rileythompson5177]

Thank you so much for making this video, it has helped me a lot.

[@pressurewashnerds]

Thanks Riley! We are glad you found it beneficial 😊

[@TimBodus-z3x]

Thank you. I appreciate this information.

[@pressurewashnerds]

Glad it was helpful!

[@BenArmstrong-h8n]

Hi, great video!!! I am starting to build my RO/DI, housings and membranes just arrived and I am starting to source my fittings but im not sure what size lines will be the best. Is it better to use 3/4" hose instead of 1/2"?. Thanks

[@pressurewashnerds]

I always like to err on the side of larger tube and fittings, since the fittings are your choke point for flow. I built this system with 3/4” on the pure water side and you can use smaller for the RO discharge

[@SalmonTroutSteelheader]

Nice video man, very well done! How many GPM are you getting out of this system? Wondering if its enough flow to have a spotless free rinse on cars

[@pressurewashnerds]

Thanks! I’m getting somewhere between 0.5 and 1 GPM. You would probably want to run several RO membranes in parallel to get higher flow for a car rinsing system.

[@wildwoodcustomsbytonyscott6504]

I have a tank with pump for rinsing cars

[@Echo7Sierra.ConcertCorner]

Ideally, you would want a tank for the RO water with a pump and bypass to your resin filter (will reduce your PPM to 0), for rinsing your cars.

[@CarneyTV]

How many gallons does this system get before the DI resin needs replaced. most di canisters total around 250-300 gallons without the r.o. system. my guess is around 10x the use?

[@pressurewashnerds]

Totally depends on your incoming TDS and how low you can get the outgoing TDS from the RO membrane. Our TDS at the DI inlet is around 25 so our expected life is 5000+ gallons. There is a chart on the Window Cleaner website for the DI resin tank that shows expected life

[@Selfmade58317]

Would you say this more comparable to the Xero Pure or Pure Plus in performance? Thanks for the video!!

[@pressurewashnerds]

You’re welcome! Same initial filtering as the Pure but it’s got a higher flow RO membrane and DI tank than both of those options so you’ll probably end up with better flow out of this custom build than either one of those options.

[@376MCL]

if the ro was hooked up to just a garden hose, what would the output be like? I have a di cart for pressure washing my cars and was wondering if i can use the ro as an inline prefilter before my di tank but i suspect that the ro membrane is pretty restrictive because all the set ups I have seen incorporates a tank to hold the water after it has gone through the ro and then it is pumped into the di via booster and then to the pressure washer. Would a hi flo ro membrane help?

[@pressurewashnerds]

At the end of the day, the single RO is always going to be the most restrictive. The Axeon membrane linked in this video was the highest flow at low pressure (garden hose) that I could find. But I think if you’re trying to feed a pressure washer, I’d look at running multiple RO membranes in parallel.

[@geovanysoto2465]

Whats the update today with your cart? Have you switched the membrane filter yet or your di resin? Where do you purchase your resin ?I just bought all the things on Amazon for this build. I already had a small DI tank I just need new resin. Is there a specific membrane filter I seen that there was a lot of them.

[@pressurewashnerds]

Original DI tank is still running strong. It was honestly way overkill for our area and incoming TDS but we don’t clean windows everyday either. I would actually suggest getting the resin at Windowcleaner.com and they also sell a smaller DI cartridge.

[@johnshoemaker6164]

With nearly half a year of usage, are you happy with the set up as is, or have you made changes to the system?

[@pressurewashnerds]

We are still really happy with this set up! In fact, we have considered building a few more, either for our use or to sell.

[@AnyHouseCleaning]

​@@pressurewashnerdsin wich city and state are you?

[@wildwoodcustomsbytonyscott6504]

What is the waste water discharge ratio procedure ? Are using tds to set up flow or purely water ratio like 4 to 1 ? . I’m not using a DI filter . This if for my hydroponic setup .

[@pressurewashnerds]

You can test tds to get the right reject vs clean flow rate for your hydroponic setup. Time is money for window washing so I’ll leave my discharge a little lower to get more flow through the DI tank. Resin is cheap!

[@CarterStutzman]

I just completed the same build and the water pressure coming out of the DI tank is the same, but doesn’t seem to be enough to come efficiently out of the water fed pole, any ideas why? Do I need a booster pump? Different pole?

[@pressurewashnerds]

Yeah, if your flow is too low you’d probably want to add a booster pump. Flow to a WFP in general isn’t going to be super high. Give it a try first on your own windows and see if you can adjust the RO bypass to get the flow you need.

[@sergetremblay9411]

Is it possible with your system to use tap water for prewashing when i have very dirty Windows? and how to do it?

[@pressurewashnerds]

Yes, there is no downside to rinsing first with a garden hose or similar, and then using the RO/DI system.

[@markmallinger7746]

need to check the water 3 places 1 incoming 2 after R0 3 after DI. Outer wise you don't know. I say that because i ran 450+ TDS thru DI and still tested 0 but rosin didn't last.

[@pressurewashnerds]

Yep! I didn’t cover it in the video but my water at the tap was around 350 tds, after RO was 18-40 depending on bypass, and post DI zero.

[@HandyHoneyBunnyLLC]

Thank you ! all is possible. What was you last price and time doing this?

[@pressurewashnerds]

I believe around $1100 but cost can be reduced by downsizing the DI tank which is a bit overkill or using a less premium RO membrane. Full parts list in the description for accurate pricing.

[@sethwillishair]

I live in Las Vegas and need the best filter for sand and carbon reverse osmosis. Do you feel that this build is suitable for my needs?

[@pressurewashnerds]

Yeah! You could consider adding an extra sediment filter in front of the carbon filter. That would catch all the large particles and preserve the rest of the system.

[@truckandtea]

Very informative thank you. I’m thinking install something for my mobile detailer van, do you know if I don’t put the RO filter just , one Sediment + 1 carbon then the resin filter, I mean those sd+carbon filter helps at all ? If yes do you know if from my tap water I get 300 TDS, how much dose remove before the resin filter ?

[@brucedavi2683]

What’s up. Thank you so much and explains a lot. Do you have videos of putting a pump booster on or adding a second membrane. I want to start cleaning my solar panels with this.

[@pressurewashnerds]

Unfortunately neither. We’ve got great pressure and flow in our area. You’d just make a splitter though from the sediment filter to both RO membranes. Then run both outlets to another tee and into the DI tank. I would run the discharge on both to a common line through the same valve just so you only have one to adjust each time. Booster pump you can reference other builds but I’m assuming it would go in line right after the sediment filter.

[@wildwoodcustomsbytonyscott6504]

I’m having a hard time finding a high flow high pressure booster pump. My house is only 45 psi

[@pressurewashnerds]

Any luck? Sites like Window Cleaner Resource and Detroit Sponge have some options for booster pumps but they’re a bit pricey

[@ethanrobinson5763]

One thing that we did was got a 1hp sprinkler pump. They’re a lot cheaper and tend to work better than anything else I’ve tried

[@fredbear2nd]

12v 5.5gpm 60psi diaphragm pump on Amazon

[@davidblair7686]

How much is the total build?

[@pressurewashnerds]

Shoot us an email and we can answer it in more detail! [e-mail]

[@derekcraig3617]

how much did this rig cost in total?

[@pressurewashnerds]

Shoot us an email and we can answer it in more detail! [e-mail]

[@austin2742]

What was the total cost of the build?

[@pressurewashnerds]

I believe around $1100 but you can reduce cost with smaller DI tank. Full parts list in description if you want to price things out

[@danielmiramontes8611]

How much did all the system cost you ?

[@pressurewashnerds]

It was under $1k total

[@danielmiramontes8611]

Is that including the pole ? How much you think it would cost me with a double membrane I’m from Arizona and the water is really hard over here

[@yournexthomenj6784]

How much is the entire build roughly?

[@pressurewashnerds]

At the time I built it, it was right around $1000 for the cart. A comparable cart from anywhere else is ~$2k+

[@eqlectic]

I built one similar and mine is getting no water pressure through the water fed pole and out the di tank

[@pressurewashnerds]

Check all of your connections/fittings. Could also be a supply issue from your main connection.

[@Allussion]

I’m getting like 25 tds any tips?

[@pressurewashnerds]

Sometimes the supply can be too contaminated to get tds down to an extremely low level. Only advice would be to keep messing with the amount of discharge your system is putting out to see if you can get it down any lower than that!

[@Allussion]

@@pressurewashnerds my tds out of the ro tank is 20-25. My tds coming out of my di tank is also 20-25. Is there a chance my di tank isn’t working?

[@pressurewashnerds]

@Allussion sounds like the resin needs replaced. Water should always leave the DI near zero unless it needs replaced.

[@wildwoodcustomsbytonyscott6504]

How GPD do you think this set up would produce?

[@pressurewashnerds]

I’d estimate around 1200-1500 GPD with 60 psi at inlet but totally depends on inlet pressure

[@piye2611]

Just wondering what type of resin are u using ?

[@pressurewashnerds]

Virgin DI resin from Window Cleaning Resource

[@abhinavjain6247]

How did you drill the hole in the frame when mounting the RO into the metal. Thanks.

[@pressurewashnerds]

Just use a center punch to mark the hole and then a standard drill and drill bit. It’s steel but it’s fairly thin and easy to drill through

[@Doitforyoself]

This was fantastic! Best I've seen yet... thank you

[@pressurewashnerds]

You’re welcome! Hope you enjoy it if you end up building one

[@wildwoodcustomsbytonyscott6504]

So I want to build a high flow system for my hydroponic system. I don’t need DI. Do you know what the TDS is from out of the RO only ? What is the GPD that this system will do ? Thanks !

[@pressurewashnerds]

Our RO was putting out around 20 TDS with incoming around 300. The Axeon membrane in the video will do 2500GPD at 80 psi. It’s a high flow membrane

[@davidrabauliman]

Where did you get that plate to mount the filter to? And do you have schematics for routing the hoses?

[@pressurewashnerds]

The mounting plate actually comes with the filter housing.

[@wildwoodcustomsbytonyscott6504]

Most RO systems have a sediment filter before carbon. Do you recommend?

[@pressurewashnerds]

Depends on use. We are primarily a pressure washing company so using a sediment filter to prolong the life of our carbon filter didn’t make sense for us. If you’re running this daily or constant for another application then yes, add the sediment for sure.

[@wildwoodcustomsbytonyscott6504]

@@pressurewashnerds Thanks , I want to use to lower town water TDS so I can add fertilizers to get back to about 1000 tds . What is the rejection rate you dial it to ? 1:1 to get 20 TDS ? Thanks again . This will save me $..

[@calklobuchar]

Do you have a parts list?

[@pressurewashnerds]

Everything is linked in the description for you

[@piye2611]

Thank you for sharing

[@pressurewashnerds]

You bet!

[@denaliwindowservices]

Good advice .

[@pressurewashnerds]

Thank you!

[@denaliwindowservices]

Hey Dillon. I have a question. I designed my system just like yours. I went with 1/2" fittings. My inlet tank at the DI swivel fitting leaks. Is that a pressure relief fitting. I actually removed it and re-teflon taped it. The thread is not leaking. It's leaking at the rotating portion of the fitting. Your opinion?

[@pressurewashnerds]

The fitting at the outlet? I’ve heard they crack easily so I went ahead and bought a brass backup from Window Cleaning Resource in their waterfed fittings section.