John Guest M Brass Stem Adaptor

• Product type: Push-fit stem adaptor to male tapered thread
• Manufacturer: John Guest
• Thread types: BSPT and NPT
• Body material: Brass
• Seal material: Nitrile O-ring
• Maximum working pressure: Up to 10 bar
• Temperature range: -20°C to +70°C
• Connection method: Push-fit to male tapered 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 male brass stem adaptor is designed to convert a John Guest push-fit connection to a male tapered threaded outlet, available in both BSPT and NPT thread forms. It is commonly used in compressed air and pneumatic systems where robust, threaded connections are required for equipment, valves or distribution points.

The push-fit stem enables rapid, tool-free installation, while the precision-engineered collet locking system securely grips the pipe without deformation or flow restriction. An integrated nitrile O-ring provides a dependable, airtight seal to maintain consistent system performance.

Manufactured from corrosion-resistant brass, the adaptor offers excellent durability in demanding industrial and workshop environments. Fully demountable, it allows systems to be modified or extended easily with minimal downtime, making it a flexible solution for evolving pipework layouts.

• Push-fit to male thread conversion: Adapts push-fit pipe to BSPT or NPT threaded connections
• Durable brass construction: Provides strength, corrosion resistance and long service life
• Instant push-fit installation: No tools, hot works or sealing agents required
• Demountable design: Enables easy maintenance and future system modifications
• Secure collet locking system: Holds pipe firmly without damage or flow restriction
• Airtight sealing: Nitrile O-ring ensures reliable, leak-free performance
• Wide compatibility: Suitable for plastic and soft metal pipe materials
• Multi-application use: Ideal for air, inert gases, vacuum and potable liquids
• Made in the UK: Manufactured and assembled to consistently high quality standards

Simplified Installation Process:

1. Preparation: Ensure the tubing or pipe is cleanly cut and free from imperfections.
2. Threaded End Connection: Screw the adaptor into the receiving fitting, choosing the appropriate thread type (BSPT or NPT), and hand-tighten for a secure fit.
3. Push-Fit Connection: Insert the tubing into the push-fit end until it reaches the tube stop.
4. Connection Confirmation: Verify both push-fit and threaded connections are secure and airtight.
5. Disconnection: To remove, push the collet squarely against the fitting and pull the tube. Unscrew the threaded end as necessary.

• 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.