John Guest Porting Block
Technical Specification
- Product type: Porting block, junction manifold
- Manufacturer: John Guest
- Available size: 1/2"
- Body material: Acetal copolymer
- Connection type: Female BSP (FBSP)
- Number of ports: 5
- Supplied accessories: 3 x plugs for unused ports
- Maximum working pressure: Up to 10 bar
- Temperature range: -20°C to +70°C
- Compatible pipe materials: Nylon and powder-coated aluminium
- Application media: Compressed air, inert gases, vacuum and potable liquids
- Country of manufacture: United Kingdom
Description
This porting block is designed to act as a central junction point for compressed air and pneumatic pipework, helping to organise multiple connections neatly from a single location. With five female BSP ports, it offers excellent flexibility for system layout, expansion and reconfiguration.
Manufactured from durable engineered plastic, the block is suitable for demanding industrial and workshop environments. It is installed using threaded connections rather than push-fit, making it ideal where a fixed, rigid manifold point is required. When paired with John Guest straight adaptors, it integrates seamlessly into air ring main systems.
Supplied with three plugs, unused ports can be safely sealed while allowing for future system expansion. Rated for use up to 10 bar, the porting block is suitable for air, inert gas and vacuum applications, as well as potable liquids.
Key Features & Benefits
- Centralised junction point: Simplifies pipework layout with five FBSP connections
- Threaded installation: Ideal for fixed manifold and distribution points
- Supplied with plugs: Allows unused ports to be securely capped
- Durable construction: Manufactured from tough acetal copolymer
- High pressure capability: Suitable for compressed air systems up to 10 bar
- Wide compatibility: Works with 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
Technical Drawing


How to Install a John Guest Porting Block
Simplified Installation Process:
- Location Selection: Choose a strategic point within the pipework system for the porting block.
- Attach: Screw the porting block into the selected surface.
- Securing Connections: Attach pipes to the female BSP ports of the block, (we recommend using John Guest Straight Adaptors) ensuring each connection is tight and secure.
- Utilising Plugs: Employ the provided plugs to close any ports not in use.
- System Check: Once installed, verify all connections for security and proper alignment.
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