John Guest Straight Adaptor

• Product type: Push-fit to BSP threaded straight adaptor
• Manufacturer: John Guest
• Body material: Acetal copolymer
• Seal material: Nitrile O-ring
• Maximum working pressure: Up to 10 bar at 23°C, 7 bar at 70°C
• Temperature range: -20°C to +70°C
• Connection method: Push-fit to BSP 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 straight adaptor is designed to connect metric pipe to BSP threaded components within compressed air and pneumatic systems. The push-fit connection allows fast, secure installation without the need for tools, heat or sealing agents, helping to reduce installation time and simplify system assembly.

A precision-engineered collet locking system grips the pipe securely without deformation or flow restriction, while the integrated nitrile O-ring provides a dependable, airtight seal. The threaded end allows straightforward connection to valves, manifolds and other BSP threaded equipment.

Fully demountable for ease of maintenance, this fitting allows systems to be modified or extended with minimal downtime. Manufactured from tough engineered plastic, it is compatible with John Guest nylon and powder-coated aluminium air pipe.

• Metric to BSP conversion: Connects metric pipe directly to BSP threaded components
• Instant push-fit installation: No tools, heat or sealing compounds required
• Demountable design: Simplifies maintenance and future system changes
• Secure collet locking system: Holds pipe firmly without damage or flow restriction
• Airtight sealing: Nitrile O-ring ensures reliable, leak-free performance
• Wide material compatibility: Suitable for plastic and soft metal pipework
• 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

Installing a John Guest Straight Adaptor is straightforward and efficient. Follow these steps to ensure a secure and reliable connection:

1. Cutting the Pipe: Ensure the pipe is cut square for a proper fit. This is crucial for the integrity of the connection. Use a John Guest pipe cutter for rigid nylon pipes. For aluminium pipes, utilise aluminium pipe cutters. After cutting, remove any burrs or sharp edges to avoid damaging the O-Ring. This step is important to maintain the quality of the seal.
2. Making a Threaded Connection: By hand, screw on the threaded end. 
3. Making the Push-Fit Connection: Push the pipe firmly into the fitting up to the pipe stop. This ensures that the pipe is fully inserted for a secure connection. Make sure the pipe is aligned correctly with the fitting to avoid any leakage or fitting damage.
4. Checking the Connection: After inserting the pipe, pull it slightly to ensure the connection is secure. This test confirms that the fitting is properly engaged. Before using the system, conduct a thorough test to ensure there are no leaks and that all connections are secure.
5. Disconnecting the Fitting: Ensure the system is depressurised before attempting to disconnect. Push the collet towards the fitting to release the pipe. This step is crucial for a smooth disconnection. Carefully remove the pipe from the fitting.

Key Features / Tech Specs:

• Material: Acetal
• Medium: Air
• Working Pressure: 10 bar/145 psi at 23°C
• Working Pressure: 7 bar/101 psi at 70°C
• Working Temperature: -20°C - 70°C

Useful Info:

It is highly recommended that all fittings are pressure tested before use.

Do not use fittings with damaged or rough-edged pipe or tubing.

John Guest recommend using cleaners and sanitising agents that are above ph4 and low in hypochlorite levels

IMPORTANT: The technical data given on this website is for preliminary information purposes only and is published without guarantee. All line drawings are for illustrative purposes only and should not be regarded as wholly accurate in every detail. We reserve the right to withdraw or to alter the specification of any product without notice. For more information, please consult our Terms of Business.

If you require any further information, our excellent customer service team is here to help so please call us on 01794 835835.