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Triplelock - Plastic Nose Cone - Ø 125 (34-125-N)

National Flues presents the Triplelock Plastic Nose Cone Ø 125, a superior flue installation accessory engineered for precision and durability. Ideal for both gas and oil heating systems, this product combines advanced folding technology with strict adherence to British safety standards. Whether you refer to it as a flue liner accessory or a precision nose cone, National Flues ensures that every installation is completed with the highest quality components.
The price you pay today £2.45
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At a Glance

    Essential accessory for accurate flue liner installation
    Compatible with both gas and oil appliances (up to 28 sec for oil)
    Constructed with precision engineering and a unique TRIPLELOCK folding technique
    Delivers a secure seal with five convolutions between each seam
    Kitemarked to BS 715 and compliant with BS EN 1856:2 standards
Delivery Information +

We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Tuesday, June 3rd. This is based on current delivery times for this product. Delivery for products not in our warehouses can be delayed because of third party carriers. 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. 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.

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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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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 Triplelock Plastic Nose Cone Ø 125 is an essential accessory for installing your flexible flue liner with ease and precision. This nose cone is specifically designed to aid in the re-lining of masonry chimneys, making it an ideal choice for gas-fired appliances (as specified by the manufacturer) and oil appliances up to 28 seconds. Built from 316L grade stainless steel, the flue liner maintains robust performance with a thickness of 0.10mm.

Its five convolutions between each seam and the unique TRIPLELOCK folding technique in three planes ensure a secure and durable seal. The product meets stringent quality standards, being Kitemarked to BS 715 and tested to meet BS EN 1856:2 specifications. With a temperature tolerance of up to 260°C, this nose cone ensures your flue liner is properly installed, secured, and sealed for optimal performance.

SKU: 34-125-N

Technical Specifications
SKU34-125-N
Sizeu00d8 125
Material316L Stainless Steel / Durable Plastic
Thickness0.10mm
Temperature ToleranceUp to 260u00b0C
Convolutions5 between each seam
Folding TechniqueTriplelock folding in 3 planes
ApprovalsKitemarked BS 715, BS EN 1856:2
• Begin by securely tying a piece of string to the nose cone. • Attach the string to the top of your flexible flue liner. • With one person at the top feeding the liner and another guiding from below, gently pull the string to feed the liner down the chimney. • Ensure that the nose cone is aligned properly to maintain the integrity of the convolutions and avoid damaging the structure. • Always follow the manufacturer’s guidelines and local building regulations to ensure a safe installation. • It is highly recommended to have your chimney swept prior to installation to prevent any obstructions or hazards.

The nose cone is used to assist in the installation of a flexible flue liner within a masonry chimney, ensuring an accurate and secure fit.

Yes, it is compatible with gas-fired appliances as specified by the fire manufacturer and oil appliances up to 28 seconds.

The nose cone is constructed from durable plastic, designed to withstand the rigors of installation and ensure a smooth process.

Tie a piece of string to the nose cone and attach it to the flue liner. Pull the liner down the chimney using the string while another person feeds the liner down from the top.

The flue liner is designed to accommodate temperatures not exceeding 260°C.

Yes, it is Kitemarked to BS 715 and has been approved and tested to BS EN 1856:2.

It's recommended that chimneys serving gas and oil appliances be swept and maintained at least once a year, or more frequently if necessary.

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