Copper Reducing Coupling FF – Capillary Reducer
The Copper Reducing Coupling FF (Female/Female) is a capillary fitting designed to connect copper pipes of different sizes. Both ends are female, allowing two copper pipes to be joined seamlessly in a step-down configuration.
Manufactured from durable copper to Australian Standards AS 3688 & AS 1432, these reducers are safe for use in water and gas installations, delivering excellent mechanical strength, corrosion resistance, and long-term reliability.
When used with Type B copper tube, they can handle working pressures of 3500–5290kPa depending on size, ensuring performance in domestic and commercial applications.
Key Features:
- Female/Female concentric copper reducer
- Joins two copper pipes of different diameters
- Capillary fitting – silver brazing alloy required
- Manufactured to AS 3688 & AS 1432
- Safe for water & gas applications
- WaterMark approved & plumber compliant
- Strong, reliable, and corrosion-resistant
Note: A licensed plumber is required for installation where connected to mains.
Available Variants
- FYL057 — 20mm x 12mm FF Copper
- FYL060 — 25mm x 20mm FF Copper
We aim to dispatch all orders within 1 business day
*Large items may be delivered to a local depot if required.
You may also like
What our customers say
View allGot questions about this product?
Head over to our Frequently Asked Questions (FAQs) page for more details on ordering, delivery, installation, and warranties — or reach out to our team for personalised help
Local Delivery Available
Flat rate Local Burdens Delivery on ANY order, large or small, direct to your door.
Find Out More
Free In-store Collection
Free in-store collection available at any Burdens Bathrooms location
Free In-store Collection















