Why Pure Water?
The mineral-free water provides incredible cleaning action and spot free windows without using a chemical. It keeps windows cleaner longer leaving no residue or build up on the surface.
The HydroTube™ offers a better, faster way to clean windows up to 5 stories safely from the ground. The unique linear design (patent pending) allows us to build a sophisticated high volume reverse osmosis DI water purification system all in one portable tube. The result is spot free windows at a fraction of the cost and time of any other system.
Yes. By the end of this Spring I estimate that I’ll have cleaned several 8 story structures as well. However, for the past year and a half I’ve only been using the Hydrotube as an RO membrane housing.
I start with a ppm measurement of 120-140 tds and with RO only and the right amount of pressure (prefiltered by carbon/sediment) I can bring that down to 2-4 ppm. No need for di 99% of the time. It’s been a year since I’ve used di resin.
what is “the right pressure”? could a ss ro standard 40" canister along with a carbon sediment/filter be used as well? and maybe just a di tank in case? I think thats pretty much what the wash-it is correct, along with a modified transport dolley built for it…
By my estimations and tests I should be able to get pressure enough to reach 8 stories through my RO without a pump. In case of pressure problems, we have several di only configurations we use.
The “right pressure” for an RO membrane is whatever pressure that will enable a proper waste to pure water ratio. This is regardless of the incoming tds ppm reading.
Maybe a manufacturer can chime in on more specific %'s.
The RO membrane was never made for window cleaning. Most industries using RO membranes are using them with high pressure and consistent water supply and they are running 24 hours a day. In our industry we are using them with inconsistent pressure and all kinds of water pressure and water sources. Therefore a unique RO membrane is designed for our industry which works at a low water pressure. IPC was one of the pioneer companies to design a RODI cart for our industry that will work at 4 GPM or 40 psi which is what most state plumping codes require on homes.
Because most window cleaners use on demand systems instead of tank based systems there is a challenge getting consistent water flow on each job. So the best options if you use a RO to filter your water is either carry a booster pump or a DI only tank for the jobs with low pressure below 4gpm or 40 psi.
If you use a tank based system you will not need a booster pump. Even a 35 gallon tank with a pump control and 100 psi pump used as a buffer for the RO can give you enoght water flow to clean as high as you can reach with a wfp.
For IPC Eagle, the waste water flow required is not based on the pressure but water flow. We have a device built into all of our systems that guarantee the same water flow no matter what the pressure. This ensures a long operational life for the RO membrane. Several hundred thousand gallons of operation when taking proper care of the pre-filters.
If you have high pressure the pure water will increase and the waste water will remain the same.
