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Screw-FIX Flex Joiner - Ø 80 (25-80-J)
National Flues proudly presents the Screw-FIX Flex Joiner - Ø 80, a top-quality chimney accessory designed for multi-fuel flue systems. Engineered for durability and maximum safety, this MI-FLEX connector is ideal for 316L and 904 flexible flue liners. Enhance your chimney system with our reliable, regulation-compliant product offering seamless integration with wood, oil, gas, and smokeless coal appliances. Search for flexible flue joiners, chimney accessories, or MI-FLEX accessories and benefit from our nationwide delivery and expert customer service.
In Stock
£39.99
Give us a call if you find it cheaper and we'll try to price match.
At a Glance
Securely connects two pieces of multi-fuel flexible flue liner Designed for use with MI-FLEX 316 and 904 linings Withstands high temperatures up to 600°C Constructed from durable 316L stainless steel with a natural finish Fully compliant with Building Regulations Document J Allows easy provision for sweeping and straightforward maintenance
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We Won't Be Beaten On Price
At National Flues, we continuously monitor competitor prices. This ensures that we consistently offer you the best deals on all our products. Here’s how we keep your costs low:
Daily Price Matching: Our team adjusts prices to ensure we stay competitive.
Bulk Purchasing Power: We sell a lot, so we can negotiate better rates with suppliers, passing the savings directly to you.
Operational Efficiency: We have streamlined processes to reduce overhead.
Price Match Guarantee: If you find the same product cheaper within 48 hours, we’ll match it and refund the difference.
Free Delivery Over £100: Orders over £100 are free delivery (call us if delivery is required outside the mainland UK).
“I saved 20% on my purchase compared to other retailers. Exceptional service!” – Jane D.
The Screw-FIX Flex Joiner - Ø 80 is an indispensable accessory for connecting two pieces of multi-fuel flexible flue liner. Specifically designed for use with MI-FLEX 316 and 904 flexible flue liners, this joiner ensures a secure and efficient connection, creating a full-system chimney. Compliance with Building Regulations Document J means the liner must be fully enclosed within a masonry chimney, and it is not suitable for non-masonry enclosures such as timber or plasterboard boxing.
This joiner is ideal for appliances operating at temperatures up to 600°C, including those using wood with less than 20% moisture, smokeless coal, gas, and oil. When it comes to installation and maintenance, this product allows for easy provision for sweeping and requires that cleaning and inspections be carried out at least annually by a competent person. For solid fuel applications, biannual sweeping at the start and end of the heating season is recommended to ensure safety and efficiency.
SKU: 25-80-J
Technical Specifications
SKU
25-80-J
Product Name
Screw-FIX Flex Joiner - u00d8 80
Material
316L Stainless Steel
Diameter
80mm
System
MI-FLEX Accessories MF25
Temperature Rating
Up to 600u00b0C
Colour Finish
Stainless Steel / NATURAL
Fuels
Wood, Oil, Gas, Smokeless coal
Approvals
CE / HETAS
Compliance
Building Regulations Document J
Ensure the Screw-FIX Flex Joiner is installed within a masonry chimney; it is not suitable for use on gas liners. The joiner must be fully enclosed within the masonry structure as per Building Regulations Document J. Regular maintenance is critical: arrange for cleaning and inspections at least annually by a competent person, and for solid fuel applications, schedule biannual sweeping at the start and end of the heating season. Always follow manufacturer guidelines to avoid any installation errors that could compromise the safety and efficiency of your chimney system.
The Screw-FIX Flex Joiner - Ø 80 is used to connect two pieces of multi-fuel flexible flue liner, ensuring a secure and efficient chimney system.
No, the Screw-FIX Flex Joiner must not be used on gas liners. It is specifically designed for multi-fuel flue liners.
Yes, the joiner is suitable for appliances operating on wood (with less than 20% moisture), smokeless coal, gas, and oil.
Yes, installation of the Screw-FIX Flex Joiner complies with Building Regulations Document J, which requires that a flexible flue liner be fully enclosed within a masonry chimney.
The joiner is suitable for use on appliances operating up to 600°C (T600 designation).
It is recommended to clean and inspect your chimney system at least once a year. For solid fuel appliances, it's advised to sweep the chimney at least twice a year.
Sweeping and maintenance should be carried out by a competent person. For solid fuel applications, a list of HETAS registered sweeps can be found at www.hetas.co.uk.
Delivery Information +
We work relentlessly to ensure you get your order fast.
Estimated delivery for this product is Tuesday, May 20th. Delivery times of products not in our warehouses depend on product availability and shipping. If you need a definitive delivery time give us a call.
If you need faster stove or fireplace delivery please also give us a call.
We can sometimes reduce longer lead times if we pay the carrier £25 for express delivery.
Visit our Shipping Information page for more information.
Warranty & Returns +
All our products come with warranties. Mi-Flex offers a lifetime guarantee.
Returns for damaged items are covered by insurance; non-damaged returns incur return delivery costs.
Price Match Guarantee +
We will match any price like for like on a retail basis. Give us a call if you find it cheaper and want to buy from us.
When considering the essential components for an efficient and safe chimney system, every detail matters. The Screw-FIX Flex Joiner - Ø 80 from National Flues is designed to provide a secure, compliant, and reliable solution for joining two pieces of multi-fuel flexible flue liner. In this comprehensive buyer’s guide, we’ll explore the benefits, installation considerations, and technical aspects of this product, helping you make a well-informed decision.
Why Choose the Screw-FIX Flex Joiner - Ø 80
Durability and Reliability:
This joiner is manufactured from 316L stainless steel, ensuring durability and excellent resistance to corrosion. The choice of premium materials means that this product is a long-lasting investment in your chimney system.
High Temperature Performance:
Rated for appliances operating up to 600°C, the Screw-FIX Flex Joiner withstands extreme temperature conditions, making it suitable for a range of fuel types, including wood, smokeless coal, oil, and even gas (where applicable, though not for gas liners). Its robust design ensures that even in the harshest conditions, your chimney system remains secure.
Regulatory Compliance:
In today’s market, compliance with industry standards and building regulations is non-negotiable. The joiner meets the requirements of Building Regulations Document J, which mandates that the flexible flue liner must be fully enclosed within a masonry chimney. This compliance guarantees that your installation is not only functional but also adheres to legal safety standards.
Technical & Safety Considerations
When installing a chimney system, technical specifications are critical. The joiner’s compatibility with MI-FLEX 316 and 904 flexible flue liners ensures versatility. Its robust construction supports safe operation across a range of temperatures and fuel types.
Key Technical Details:
• Constructed from high-quality 316L stainless steel
• Suitable for 80mm diameter systems
• Designed to integrate seamlessly with MI-FLEX Accessories MF25 series
These features translate into a secure connection that minimises risks associated with flue system failures. The design intentionally provides easy access for cleaning and inspection, ensuring ongoing safety and efficiency throughout the lifespan of your chimney system.
Installation and Maintenance
Proper installation is paramount for any chimney accessory. The Screw-FIX Flex Joiner must be fitted within a masonry chimney, ensuring that the liner is fully enclosed. It is important to remember that this joiner is not to be used on gas liners.
Installation Best Practices:
• Verify that the entire flue liner is adequately supported within the masonry structure
• Ensure that the joining components are securely fastened to maintain a continuous system
• Refer to manufacturer guidelines during installation to avoid potential pitfalls
Maintenance should be viewed as an integral part of your chimney system’s lifecycle. A regular schedule of inspections and cleaning by a competent person is recommended. For those using solid fuel appliances, it is advisable to arrange for biannual sweeping, particularly at the commencement and conclusion of the heating season.
Compliance & Building Regulations
Adhering to Building Regulations Document J is essential for safety and compliance. Our joiner facilitates this by ensuring that your flue liner connection is secure and fully enclosed within the chimney. This not only meets legal standards but also offers peace of mind by significantly reducing the risk of chimney fires and ensuring proper draft and ventilation within your home.
Customer Support & Service
At National Flues, customer satisfaction is our top priority. Our extensive range of chimney accessories is supported by expert advice and reliable nationwide delivery. We understand that choosing the right components for your chimney system can be overwhelming. That’s why we are here to assist with any queries related to installation, compatibility, and maintenance. Our team of experts is always available to guide you through the process, ensuring that you get the most out of your investment.
Conclusion
The Screw-FIX Flex Joiner - Ø 80 is more than just an accessory – it is a critical component that ensures the safety, efficiency, and longevity of your multi-fuel flue system. With its high temperature tolerance, robust build, and compliance with stringent building regulations, this joiner offers a comprehensive solution for chimney systems. Whether you are a homeowner looking to upgrade your current setup or a professional installer seeking reliable components, the Screw-FIX Flex Joiner provides the quality and performance you deserve.
Choosing this product means opting for safety, durability, and peace of mind. Embrace the benefits of a secure and regulation-compliant chimney system and invest in a joiner that stands the test of time. With regular maintenance and proper installation, this joiner will serve as the backbone of a reliable chimney setup, ensuring that your home remains warm and safe during the cold months.
For any further assistance or professional advice, our team is ready to help you achieve the best possible results.
Buy now or call 01670 206 999.
Secure your Screw-FIX Flex Joiner now for a safer, compliant chimney setup!
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