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

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!

Bought a new sink and the fitting for my water filter didnt fit the 3/4 connections. Local hardware didnt have these JG fittings, which I needed as my water filter uses the 1/4 plastic tubing. Bought this, and in less than 5 min had my water filter hooked back up.

This product was easy to install and supplied my dishwasher with water without leaking Mission accomplished!

Wish it has turning tight, but everything is good.

This is the missing part you couldnt figure out when you came up with that idea that you needed an easier way to fill your Keurig coffee maker. This screw onto the normal 3/8 compression fitting that most everyone has at the end of their under sink water supply valves. The water supply hose then screws perfectly on the male end, giving you a tee connection that you can turn on/off while changing filters, putting it together, etc. It has a 1/4 push connect tubing female connector that will then go into the IN side of your filter, then you attach another 1/4 tubing from the OUT side of the filter to whatever device you rigged up to fill the Keurig tank. I used a straight 1/4 tubing to 3/8 MIP (male iron pipe thread) valve, threaded it onto a brass ell and drilled a hole in the tank near the rear top. I used a brass hose barb to 3/8 FIP (female iron pipe thread) to screw into the above thru the plastic tank. Then I attached a small length of tubing to the brass barb and aimed it down into the tank so I wouldnt get splashing around the lid. I also used a couple of rubber O-rings to gasket between the ell and the hose barb to prevent leaks on the side of the tank. Turn on the valve at the tank and fill it as needed quickly. Of course, if you want to trust a float valve, you could put one in, but I was wary of trusting one.

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

This is just what I needed. Very well made. Its a plastic valve but it looks like it will last a long time. A piece of advice though. the 3/8 refers to the inside of the water supply line. It will fit a 1/2 compression thread. This gets very confusing since it is not specified and a lot of the fittings refers to the thread rather than the inner tube diameter...

I used this after reading another review about it..... He was so right! This little adapter makes the job a lot easier and now I have a second shut off for just the under sink filter. It threads right on to the 3/8 faucet connection and then gives you a second shut off and connection point for another device, AND it swivels so you can turn it to the best angle! Worth every dollar. UPDATE, I have now used three of these! They are a great idea!

Perfect!! Buy this! I was looking for right connetor something does not leak at all and this is it! I bought METPURE brand connector first but water was keep leaking so I returned and tried this one and i am happy about the result! It has a rubber band inside of the connector so water does not leak at all if you tightened well.

I bought the wrong size, but it does its job even if I had to swap for a different one.