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

-I’ve been using this product for almost over 10 years , I’m happy to be able to find it here on Amazon and it works perfect. it’s very good quality! Buy with confidence!

Glad to have this, it works great.

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

Good quality fitting, as usual with JG speedfit fittings. I used this to tap into my under-sink coldwater line to install a RO/DI system on my pex line. This will easily work on PEX and braided hose line, right after the cold water shut off valve going to your faucet. Far better quality than the cheap plastic pieces most home RO systems come with to tap into the cold water.

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

Used for my water filter and it was easy to install

it is easy to install it works perfectly it is the part that I needed to make my water dispenser work it is an excellent invention indeed yes

Needed to make a connection to my BRS-RO/DI system for reef tank. sink at home already has a RO system for everyday use so i need to make the connection from the bathroom sink. This saved the day, after looking at different Home Depots and other stores i shoulda just come here, heck i already do all my shopping here. Easy hookup no explanations needed, saved the day.

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.

My new RO system leaks from its cold water intake adapters like mad only a day after installed (by me). The supplied adapter is all plastic and the part that mates with the brass water outlet feels flimsy and its washer is puny compare to what I used to. So I called Premier and was advised the problem may with faulty washer and they will send me replacements. I knew the problem may be the design/durability of the adapter itself. I doubt a new washer will solve the problem. Even if it does, I have no confidence that it will not fail again later. So I took a chance and bought this one. Using the supplied brass adapters and teflon tapes from my RO system, I am happy to report that the leak has stopped. Tested for a few days now, still bone dry under the sink. So far so good. So if your RO system ships with a lousy adapter, save the hassle and buy this one instead. For a little over $10, the peace of the mind is well worth it.