Tubing and plumbing for homemade RO

[Diesel Pro]

Looking at setting up with flexibility/serviceability in mind. I found a 1/2" flexible nylon tube rated 250psi WP and 1000psi burst. Available in black or natural. The black has UV stabilizer in it. The natural does not. I also found several different push connects that work with this tube. Again the idea is simplicity and serviceability. Any suggestions on black versus natural?


Tube:
http://www.fastenal.com/web/products/detail.ex?sku=450062-131280

Fittings:
http://www.fastenal.com/web/products/detail.ex?sku=68453
or
http://www.fastenal.com/web/products/detail.ex?sku=0442824


Flow control:
Panel mount
http://www.fastenal.com/web/products/detail.ex?sku=0443204

simple NPT
http://www.fastenal.com/web/products/detail.ex?sku=0443014

Prices are all inflated. Yes they will be expensive, BUT these are a one time purchase. I deal a lot with Fastenal have an account, and get a decent price on most stuff.

[Diesel Pro]

I axed the flow controls and went with a Hydronix Adjustable Panel Mount Flowmeter - 0.5-5.0; 1/2" MNPT Part # AFM-055 for simplicity.

Tubing was expensive, went with the cheaper of the fittings for now. The better ones are fantastic as I have used them in 1/4" before.

This setup should allow me to change configurations of the plumbing quite easily. Initially I plan to mount everything to a 2 wheel hand truck but may change that later depending how it works.

[saekeaton64]

I went to www.lowes.com and looked up supply lines for sinks, there are quite a few options there with a max burst of 2500 psi. I think that would be a cheap option for all your high pressure lines.

[arcticmaple8]

i looked into the same stuff when i made my ro, found that clear braided pvc works well and just used 1/2" insert fittings like for black plastic well lines
also the working pressure of that tubing is 250psi, i have run it to 310psi without problems, normally only run around 200psi, my vessel leaked a little before the tubing bothered. I dont think the fittings are rated for as high of pressure but i havent had a problem in 2 years of running. 1/2 in tubing fit tight on barb fittings, i had to heat it with a torch and really push it on, next time i would use 5/8 tubing.