Get your John Guest 3/8" QC X 1/2" Stem Adapter Quick Connect Fittings. Quick connect fittings have push-fit technology which makes installation and disconnection very easy, without the need of tools. John Guest parts are food grade quality and should only be used with liquids and reverse osmosis water systems. These connections work with soft metal and plastic tubes. Do no use with gas, compressed air, or vacuums. They have superior water flow characteristics.
John Guest fittings are a quick and inexpensive way to make a connection for your reverse osmosis filters. They are strong and durable, can be used in commercial applications like soda fountains and commercial icemakers. They are Federal Safe Drinking Water Act compliant, as well as being very easy to install and put in use, making repairs fast and easy.