3/8" Stem x 1/4" Male Threaded Stem Adapter | John Guest Quick Connect Fittings

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Brand John Guest

John Guest Fittings Quick Connect Push Fittings
John Guest Quick Connect Fittings - Male Stem Adapter

Plumbing Fittings for Water Treatment

John Guest  PI051222S is a male stem adapter with 1/4" male threaded fittings on one side and a 3/8" stem post on the other.  John Guest PI050822S male stem adapter may be used to connect a threaded fixture such as a housing to a line with QC fittings installed.  PI fittings are manufactured in grey acetal copolymer, making them especially suitable for applications involving foodstuffs and potable liquids. They are also suitable for air and inert gases and can be used on N2/CO2 (installed in accordance with The British Beer and Pub Association Code of Practice) mixed gas dispense lines and in pneumatic applications and vacuum.

  • Push-fit technology
  • Quick disconnection without the need for tools
  • High chemical resistance

Accepted by almost all the world’s beer and beverage producers and by the manufacturers of drinks dispense equipment, John Guest products have quality and performance approvals from leading testing and acceptance authorities.
John Guest Fittings Accreditations

  Specifications for PI051222S
John Guest Part Number: PI051222S
Brand: JG Speedfit
Manufacturer: John Guest
Material: Grey Acetal Copolymer
Stem Connection: 3/8" OD
Threaded Connection: 1/4" Male NPTF
Fitting Type: Straight
Color: Grey

NSF-61 For Drinking Water
NSF-51 For Food
FDA For Food And Beverage

water treatment products instructions water treatment products specifications

How to Connect John Guest Fittings

John Guest offers a wide range of push-fit connectors, tube and other fluid control products for drinks dispense and pure water applications. The world’s first food quality push-fit fitting, the John Guest range is now over 800 items strong and provides the quickest and most effective of installations with the quality assurance you would expect. Pushing the tube into the fitting is all that is needed to produce an instant but permanent leakproof connection. The fittings are just as easy to disconnect and re-use without the need for replacement parts. Our Beverage and Drinks Dispense products are produced in FDA compliant materials making them especially suitable for potable liquids.

Additional Resources for Using John Guest Fittings

How to Make a Secure Connection with John Guest Fittings

  • Cut the tube Square
    John Guest Fittings Tubing Connections
    Cut the tube square and remove burrs and sharp edges. Ensure the outside diameter is free of score marks. For soft or thin walled tube we recommend the use of a tube insert.
  • Push up to tube stop
    John Guest Fittings Tubing Connections
    Push the tube into the fitting, to the tube stop.

  • Pull to check secure
    John Guest Fittings Tubing Connections
    Pull on the tube to check it is secure. Test the system before use.

  • TO DISCONNECT:   Push in collet and remove tube
    John Guest Fittings Tubing Connections
    To disconnect, ensure the system is depressurized, push the collet square against the fitting. With the collet held in this position the tube can be removed.

Typical Bar Installation (click to enlarge & download)

Typical Bar Installation Using John Guest Fittings