John Guest Speedfit 3/8 x 3/8 x 1/4 Inch Angle Stop Adapter Valve, Push to Connect Plastic Plumbing Fitting, ASVPP1LF

This was exactly what I needed.

This should have been a part of water filter as it makes it so easy to install. Perfect connector with great quality

It was simple to install and after 2 months still no leaks or problems.

Works like a charm! This is a quality product. Note that the valve only turns on/off the flow from the divider. It doesnt switch the flow of water between the two outputs.

I needed this for my RODI under sink unit. I originally bought an EZ Angle Stop Adapter.. and that was a HUGE mistake. Leaked like crazy and nothing I did could stop it. This part however works like a charm, solid construction with no leaks! If you have a leaky EZ Angle Stop Adapter, this is the answer. A few things not list about this part is that the female 3/8 NPT comes with a nice rubber gasket, so no need to use plumbers tape on it. Also the entire PVC center swivels independently of the main unit, so you can position it perfectly even after tightening it down. Installation took less than 10 minutes.

This is perfect. I installed a new Delta faucet that comes with two long supply tubes designed to connect directly to the water faucets under the sink. The converter kludge originally supplied by the RO company was misplaced so I had a big problem. This valve solved it beautifully. You wont find this at HD or Lowes.

Needed it for my Aquapurr automatic cat waterer. Im so happy with how everything worked out.

I rarely write review, but this one is just too good. No leak, installed it within 3 minutes even I am a rookie in water system. Now this thing sit nicely under my sink and I just connect the pipe from RO/DI when I need RO water for my aquarium.

easier to install than the original that came with my RO system and works and fits better.

I bought this product to split the water line under my kitchen sink. The 3/8 line goes to the sink and the 1/4 line goes to a water filter. What all can I say? It works without springing a leak. I only tested the valve a few times when I first installed it. If you are turning it on and off 20+ times a day, it might wear out, but I cant think of any applications which would require you to do so. Use some plumbers tape over the metal threads on the source 3/8 line and the 3/8 output.