This pipe joint includes a built-in non-return valve, preventing air or odours from flowing back through the ducting of an extractor hood's flue system. Suited to 100 mm diameter pipework, it combines a secure connection with one-way airflow control, while remaining lightweight and rigid.

• Connects 100 mm diameter ducting with non-return valve
• Prevents backflow of air through the duct
• Used in extractor hood flue systems
• Lightweight and rigid construction