John Guest Stem Adaptor

• Product type: Push-fit to MBSP threaded stem adaptor
• Manufacturer: John Guest
• Body material: Acetal copolymer
• Seal material: Nitrile O-ring
• Maximum working pressure: Up to 10 bar
• Temperature range: -20°C to +70°C
• Connection method: Push-fit to MBSP thread, demountable
• Compatible pipe materials: Nylon and powder-coated aluminium
• Application media: Compressed air, inert gases, vacuum and potable liquids
• Country of manufacture: United Kingdom

This stem adaptor is designed to convert a push-fit connection to a male BSP threaded connection within compressed air and pneumatic systems. It is commonly used to create swivel-type connections or to integrate two John Guest fittings, providing flexibility when assembling or modifying air ring main installations.

The push-fit end allows rapid connection without tools, heat or sealing compounds, while the precision-engineered collet locking system grips the pipe securely without deformation or flow restriction. An integrated nitrile O-ring delivers a reliable, airtight seal to maintain system performance.

Fully demountable for ease of maintenance, the adaptor allows pipework to be altered or extended with minimal downtime. Manufactured from tough engineered plastic, it is compatible with John Guest nylon and powder-coated aluminium pipe, as well as a wide range of plastic and soft metal pipe materials.

• Push-fit to MBSP conversion: Converts a push-fit connection to a male BSP threaded outlet
• Instant installation: No tools, hot works or sealing agents required
• Demountable design: Enables easy maintenance and system modifications
• Secure collet locking system: Holds pipe firmly without damage or flow restriction
• Airtight sealing: Nitrile O-ring ensures dependable, leak-free performance
• Wide compatibility: Suitable for plastic and soft metal pipe materials
• Multi-application use: Ideal for compressed air, inert gases, vacuum and potable liquids
• Made in the UK: Manufactured and assembled to consistently high quality standards

Simplified Installation Process:

1. Preparation: Before beginning, ensure that the tubing or pipe is cut squarely and free from scratches or damage. A clean, smooth cut is crucial for a proper seal.
2. Insertion: Push the tubing into the adaptor until it reaches the tube stop. The unique collet locking system of the John Guest Stem Adaptor ensures a firm and secure connection.
3. Connection Confirmation: To ensure that the tube is correctly inserted, a slight tug on the tube will confirm engagement. This step is vital to guarantee a secure and airtight connection.
4. Disconnection (if needed): The adaptor is fully demountable. To disconnect, simply push the collet square against the face of the fitting and pull the tube to release.
5. Versatility in Application: The John Guest Stem Adaptor is designed for use in various settings, including air and pneumatics systems, vacuum lines, and even systems involving potable liquids. It's suitable for both residential and industrial environments.

• No Tools Required: The push-fit technology eliminates the need for tools, making installation quick and hassle-free.
• Time-Efficient: The installation process is significantly faster compared to traditional methods, enhancing productivity.
• Safety: The installation process requires no hot works, reducing risk and ensuring a safer working environment.