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

I had to purchase this to use with the faulty one shipped with

Excellent

Item was shipped quickly, arrived quickly, and was exactly as described.

These are hard to find locally, fit and finish was great worked well cant ask for more.

I installed this valve as a shut off valve from the 3/8 incoming water supply to the RO system. Right after installing the valve I got very loud water chatter & vibration. The vibration was so bad that I had to remove the valve and reinstall another one just like it. It too caused very loud vibration in the system. Turning on the faucet or the RO caused this issue. One time it started vibrating loudly, in the middle of the night, all on its own with NOTHING turned on! I removed the valve and looked closely at the design. It actually uses a type of cam design to allow the water to run through the device; NOT a straight thru pipe connection. It appears to be quality made, but the water flow design is quite different. I then ordered a Frizzlife brass feed water adapter of the same dimensions with a normal design. The problem then went completely away. Everything is now running smoothly and quiet.

Glad to have this, it works great.

The JG Speedfit product SAVED ME. I needed to purchase this adapter to complete a Filtrete Model 4US-MAXL-S01 setup. Filtrete/3M sends a piece of crap plastic that never completely sealed in my under sink setup (it would leak no matter how much I used sealing products) and was easy to thread. I was so glad to find something with metal for the threaded connections while still providing the push-stop valve I needed for the water filtration system. And the little open-close valve is perfect! It allowed me to check for any leaks before hooking up the push-stop. THANK YOU, JG!

This valve is excellent for the purpose it is meant for,.....adding a take off to your cold water inlet valve to feed a filter system using 1/4 plastic tubing. Nothing magical involved, just screw on to your under counter shutoff valve, and attach your flex hose feeding your main faucet to the other end. Plug in a 1/4 tube into the push fitting and turn the plastic section to where the 1/4 turn shut-off handle is most convenient, and you re done. Probably a bit expensive for the purpose, but if you want simplicity and reliability this is the valve for you if adding an under counter filter system of any type. Personally I feel it is worth it.

Product was well built and it fit my purpose exactly.

just what we ordered