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 bought an ro filter counter top version few months back. I moved to a new house which had an expensive moen pull down faucet on which the filter failed to fit. I tried all possible solutions of finding different adapters which help to fit this filter to the faucet. However all attempts failed. Called the customer service and they gave a solution to replace the ro filter with under sink model or replace the faucet. I did not want to do that as it would costed more than 500 dollars. Finally I found this attachment which helped me fixed the ro filter from the under sink by pulling an extra pipe out for ro filter. I am so happy I found it and it saved lot of money.Its a nicely built product of great quality.Glad such products exists

My first valve leaked and contacted the seller. They replaced it for free with shipping included and the new valve works perfect and is a 5 min install. I would buy again.

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.

The valve I received today states it is Lead Free and meets the requirements of AB 1953. Californias AB 1953 defines the term “lead free” as an average lead content of 0.25% or less. The last two letters of the part number (LF) indicate this is the lead free model. It was manufactured in the UK.

The two adapters I received with the Ukoke RO water filtration system were 1/2 and 3/8 sizes. But my home plumbing system is 3/8 compressed fit type. So none of those adapters worked for me. So, I found this product on amazon and tried. It worked like a charm, a happy ending to the quest of getting fresh RO filtered water.

This was exactly what I needed.

Much better than what was provided by whirlpool. Allowed me to split the cold water connection to the RO system and ability to shut it off during filter exchanges etc.

Used this adaptor valve to connect my existing Watts Premier RO-Pure to the new Moen kitchen faucet I had newly purchased. A well made product and easy to install. Highly recommended.

Excellent

I used this product to my undersink water filter. I particularly like the shutoff valve that will make it easier to change the filter cartridge without turning off the main supply.