Brass Fittings
The John Guest brass push-fit fittings range is designed for reliable, high-performance compressed air and pneumatic systems where strength, airtight sealing and ease of installation are essential. Manufactured in the UK from high-quality brass, these fittings combine robust construction with John Guest’s proven push-fit technology to deliver fast, secure and professional results across industrial, workshop and commercial environments.
Suitable for compressed air systems up to 10 bar, as well as inert gases, vacuum and potable liquid applications, John Guest brass fittings provide excellent flow characteristics while maintaining a dependable, leak-free seal.
Key Features & Technical Specifications
- Material: Brass
- Medium: Compressed air (also suitable for inert gases, vacuum & potable liquids)
- Connection type: Push-fit design (demountable)
- Working temperature: -20°C to +70°C
- Operating pressure: Up to 10 bar
- Pipe compatibility: Nylon and powder-coated aluminium pipe
- Manufacture: Made in the United Kingdom
Why Choose John Guest Brass Fittings?
These fittings are engineered to deliver long-term reliability in demanding applications:
- Instant push-fit installation - no tools, hot works or sealing compounds required
- Airtight performance - precision-engineered nitrile O-rings ensure consistent, leak-free sealing
- Secure collet locking system - firmly grips the pipe without deformation or flow restriction
- Durable brass construction - enhanced strength and corrosion resistance compared to plastic alternatives
- Fully demountable - allows easy system modification, maintenance or expansion
Typical Applications
John Guest brass push-fit fittings are commonly used in:
- Compressed air distribution systems
- Pneumatic control and automation setups
- Workshop air drops and machine connections
- Industrial plant installations
- Inert gas and vacuum systems
Installation & Best Practice Guidance
For optimal performance and safety:
- Always cut pipe square and clean, removing burrs and sharp edges
- Do not use fittings with damaged or rough-edged pipe or tubing
- Insert pipe fully to the tube stop to engage the collet and seal correctly
- It is strongly recommended that all fittings are pressure tested before system commissioning
Push-fit connections can be disconnected by depressurising the system, pushing the collet towards the fitting and withdrawing the pipe.
A Professional Solution for Air Systems
Whether you’re installing a full compressed air ring main or connecting individual drop points, John Guest brass push-fit fittings offer a dependable, time-saving solution that doesn’t compromise on strength or performance. Designed for clean, efficient installations with minimal downtime, they’re a trusted choice for professionals who want long-term reliability built in from day one.
If you require any further information, our excellent customer service team is here to help so please call us on 01794 835835.
