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Screw-FIX Joiner - Ø 175 (25-175-J)

National Flues proudly presents the Screw-FIX Joiner - Ø 175, a top-quality accessory engineered for secure joining of MI-FLEX multi-fuel flexible flue liners. Ideal for systems using solid fuels, wood with less than 20% moisture, smokeless coal, oil, and gas appliances, this joiner offers a robust, Read more...
Screw-FIX Joiner - Ø 175
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Great value at £61.99
Give us a call if you find it cheaper and we'll try to price match.

 

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At a Glance

    Made from premium 316L stainless steel for durability
    Withstands temperatures up to 600°C (T600 rating)
    Complies with CE, HETAS and Building Regulations Document J
    Designed for MI-FLEX multi-fuel flue liners ensuring a secure join

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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:

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Price Match Guarantee: If you find the same product cheaper within 48 hours, we’ll match it and refund the difference.

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Have Questions?
Phone: 01670 206999
Email: [email protected]

The Screw-FIX Joiner - Ø 175 is a premium accessory designed specifically for use with MI-FLEX 316 and 904 flexible flue liners. This joiner is essential when connecting two sections of multi-fuel liner and ensures a robust and secure flue system. Ideal for solid fuel, wood with <20% moisture, smokeless coal, gas, and oil appliances, it can withstand temperatures up to 600°C. It is compliant with Building Regulations Document J, meaning it must be fully enclosed within a masonry chimney. Regular maintenance and sweeping by competent professionals are recommended to keep your system in peak condition.

SKU: 25-175-J

Technical Specifications
SKU25-175-J
Diameter175 mm
Material316L Stainless Steel
Temperature RatingUp to 600°C
ComplianceCE / HETAS, Building Regulations Document J
Compatible SystemsMI-FLEX multi-fuel liners
Suitable FuelsSolid fuel, Wood (<20% moisture), Smokeless coal, Oil, Gas Appliances
FinishNatural Stainless Steel
• The Screw-FIX Joiner must be installed within a masonry chimney to comply with Building Regulations Document J. • Ensure that all flue liner components are correctly aligned and properly secured prior to installation. • A professional chimney sweep or installer is recommended to ensure safe and efficient setup, minimising risks associated with incorrect fitting. • Regular maintenance including annual or bi-annual sweeping is essential. Avoid using chemical cleaners or abrasive tools to preserve the integrity of the stainless steel finish. • Note: This joiner is not suitable for gas liners and must not be installed in non-masonry enclosures such as timber or plasterboard.

No, the Screw-FIX Joiner is not intended for use with gas liners. It is designed specifically for multi-fuel liners.

This joiner is suitable for solid fuels, wood with less than 20% moisture, smokeless coal, gas, and oil appliances.

The joiner can withstand temperatures up to 600°C (T600 designation).

For solid fuel appliances, it is recommended to sweep the chimney at least twice a year: once at the end of the heating season and again before the start of the next season.

No, the joiner must be installed within a masonry chimney as per Building Regulations Document J. Timber or plasterboard enclosures are not acceptable.

Yes, ensure that the chimney system allows easy provision for sweeping and maintenance. Avoid using chemical cleaners or mild steel tools on stainless steel chimneys.

While it's possible to install the joiner yourself, having it installed by a competent professional ensures compliance with regulations and optimal performance.
Delivery Information +

We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Thursday, May 22nd. 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.

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