💧 WHY WE USE THIS CONNECTOR
We use John Guest 12 mm push-fit connectors in our campervan plumbing systems for quick, reliable, and leak-free connections.
These fittings allow you to connect 12 mm water pipe directly to threaded components such as pumps, filters, tanks, and valves without complicated tools or clamps.
Push-fit technology makes installation fast and simple while still providing a secure connection suitable for pressurised hot and cold campervan water systems.
If you're unsure whether this connector is suitable for your system, we're happy to advise before you buy.
 
✅ SUITABLE FOR
• Campervan and motorhome water systems
• Hot and cold water plumbing
• Connecting 12 mm pipe to threaded components
• Fresh water plumbing installations
• DIY and professional van conversions
 
❌ NOT SUITABLE FOR
• Gas systems
• Fuel lines
• Central heating or high-temperature heating systems
• Compressed air systems
 
🚐 REAL-WORLD USE
These connectors are used in our Fiat Ducato campervan conversions when connecting 12 mm pipework to pumps, filters, water heaters, and other threaded plumbing components.
 
📦 DELIVERY & SUPPORT
This item is shipped from our EU stock.
Estimated delivery: 1–3 working days.
Questions before buying? Contact us via email or Instagram - we’re happy to help you choose the right components for your campervan water system.
 
⚠️ IMPORTANT NOTES
• Designed for use with 12 mm OD semi-rigid pipe
• Pipe inserts should be used when connecting soft tubing
• Ensure pipe is cut clean and square for a proper seal
• Thread sealant or PTFE tape is recommended for the BSP connection
 
John Guest 12 mm Push-Fit to 3/8" BSP Male Connector is a high-quality plumbing fitting designed for fast and reliable connections in pressurised water systems.
The push-fit side allows quick installation with 12 mm pipe, while the 3/8" BSP male thread connects securely to compatible pumps, filters, valves, and other threaded components.
Manufactured from durable, food-grade materials, these fittings are widely used in campervans, motorhomes, boats, and off-grid water systems where reliability and ease of installation are important.
 
Technical Data:
Pipe Size: 12 mm push-fit
Thread Type: 3/8" BSP male
Connection Type: Push-fit / threaded
Material: Acetal / food-grade plastic
Application: Fresh water systems
Compatible Pipe: 12 mm OD semi-rigid or plastic pipe