Screw-FIX Joiner - Ø 150 (25-150-J)
At a Glance
- Designed specifically for use with MI-FLEX 316 and 904 multi-fuel flexible flue liners
Withstands temperatures up to 600°C (T600 rating)
Constructed from durable 316L stainless steel with a natural finish
Fully compliant with UK Building Regulations Document J and CE/HETAS approved
Provides a secure, seamless connection between flue liner sections
Delivery Information +
We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Thursday, July 17th. This is based on current lead times for this product. If you need a stove, or other bulky product, to be delivered by a specific time in the next 7 days, then please give us a call on 01670 206 999. 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 and you can read in our blog about they types and terms and conditions for warranties. Mi-Flex flue liner, for example, comes with a lifetime guarantee. Give us a call if you want to know about a specific warranty. Returns for damaged items are covered by insurance; non-damaged returns incur return delivery costs.
Best 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.
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.
Have Questions?
Phone: 01670 206999
Email: [email protected]
- Summary
- Specs
- Install
- FAQs
The Screw-FIX Joiner Ø 150 is a top-tier accessory meticulously designed for use with MI-FLEX 316 and 904 multi-fuel flexible flue liners. Perfectly constructed to form a full-system chimney when combined with other MI-FLEX components, this joiner ensures seamless connection of two flue liner segments. Adhering strictly to Building Regulations Document J, it mandates that flexible flue liners be fully enclosed within a masonry chimney—non-masonry enclosures like timber or plasterboard are not permissible.
Capable of withstanding temperatures up to 600°C (T600 designation), the Screw-FIX Joiner is compatible with wood (<20% moisture), smokeless coal, gas, and oil. Maintenance is straightforward but crucial: sweep regularly with non-chemical cleaners and avoid mild steel tools to maintain the integrity of your stainless steel chimney system. Professional sweeping is recommended at least twice a year, especially for solid fuel applications, to ensure optimal performance and safety.
SKU: 25-150-J
| Technical Specifications | |
|---|---|
| SKU | 25-150-J |
| Joiner Size | u00d8 150 |
| Material | 316L Stainless Steel |
| Temperature Rating | Up to 600u00b0C (T600) |
| Compatibility | MI-FLEX 316 and 904 multi-fuel flexible flue liners |
| Fuel Types | Wood (<20% moisture), Oil, Gas, Smokeless coal |
| Approvals | CE / HETAS |
| Regulatory Compliance | Building Regulations Document J |
What our experts say!
"The Screw-FIX Joiner Ø 150 is an essential accessory for any chimney system using MI-FLEX 316L and 904 flexible flue liners. Highly recommended by National Flues, we ensure nationwide delivery and serve both retail and trade customers with exceptional reliability."
The Screw-FIX Joiner Ø 150 is used to connect two sections of multi-fuel flexible flue liner, essential when the chimney liner length exceeds the maximum length of flex available.
National Flues is a leading UK supplier of high-quality fireplaces and flues, serving both retail and trade customers nationwide. Known for competitive pricing and reliable delivery, they offer secure online payments and dedicated trade accounts.
