Flow Restrictor with 1/4 quick connect for RODI System (420CC)

This worked great for my two 75 gpd ro membranes in series. I purchased my rodi water saver system used and it came with a 800 restrictor which caused low efficiency and I went through DI resin quickly. Since installing this my efficiency has increased quite a bit.

If you are looking for flow restrictor for your RO system, just get this brand. I ordered two other brands both come with 2 restictors they made very loud noise while my old original parts was very quiet. This one makes no noise just like the original one, half the price with much faster shipping. How could you not love this little parts! Highly recommend.

No leaks and works very well

I had upgraded my RODI, when it supplied a salt water tank, but it tended to run on with the size recommended. No longer keeping a marine tank, and having my largest aquarium develop a crack, I no longer needed 150gpd, so I down sized to the RODI's original output. This was part of that change, working better than I expected, I can barely tell the RODI is operating. With out the run on, my life is a little easier, and I hope my water bill will be a little lower.

Seems well made. Restricts the flow, so the 75gpd RO filter can work properly

The flow restriction values that are given here and elsewhere are not set in stone. It is best to size your restrictor by referring to the actual ml/min spec that corresponds to your specific membrane unit. Also there is quite a bit of wiggle room for each membrane size. Best to get a restrictor number from the manufacturer, since a wide variety will work. Restrictor size will affect water production and waste water amounts. The only reason to replace a restrictor is if it becomes clogged. This restrictor style is easy to remove and replace. Remove any existing capillary restrictors if fitted.

This 550 size, used on 75 gpd membranes, seems to deliver more pure water per hour than any other. It doesn't fit the charts but it works best, IMHO.

Seems to work fine

exactly as described, one should use caution that the quick connects require a flat edge on the tubing to adhere properly to when replacing parts in the water system, make sure the cut is clean and as straight as possible. the size is perfectly matched to the previous part i had, as well.

No leaks

Very loud should be used to 200gpd units as it doesn’t slow down enough for 100gpd membrane