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Triplelock - Oil Cowl, Chinamans Hat - Ø 100 (34-100-O)

Experience unrivalled safety and performance with the Triplelock Oil Cowl, Chinaman's Hat - Ø 100 from National Flues. This premium flue termination accessory, engineered from high-grade 316L stainless steel, is ideally suited for oil installations and gas appliances. With features that meet BS EN 1856:2 standards and innovative Triplelock seam technology, this product guarantees efficiency and durability in every installation. National Flues continues to lead in delivering exceptional flue acce Read more...
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At a Glance

    Triplelock seam folded in three planes for an unyielding seal
    Constructed from 316L grade stainless steel (0.10mm thick) for superior durability
    Suitable for both oil (up to 28 sec. viscosity) and gas installations
    Compliant with BS 715:1993 and tested to BS EN 1856:2 standards
    Designed with a single skin flexible flue liner featuring five convolutions
    Comes with a 2-year warranty for peace of mind
Delivery Information +

We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Tuesday, July 1st. 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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Have Questions?
Phone: 01670 206999
Email: [email protected]

The Triplelock - Oil Cowl, also known as the Chinaman's Hat Ø 100, is specifically designed for terminating a flue liner in oil installations. This high-quality cowl is suitable for appliances powered by gas and oils up to 28-second viscosity, comfortably handling temperatures up to 260°C. Constructed from durable 316L grade stainless steel, it features a single skin, flexible flue liner that is 0.10mm thick.

The liner is built with five convolutions between seams and a unique Triplelock seam folded in three planes, ensuring a secure, long-lasting seal. Additionally, this flue liner is Kitemarked to BS 715 and has been rigorously tested to meet BS EN 1856:2 standards. To install, make sure the liner fits the chimney, follow a meticulous process involving sweeping the chimney, using a nose cone and string for liner placement, and sealing with a terminal.

Regular maintenance is recommended for optimal performance, at least once a year.

SKU: 34-100-O

Technical Specifications
SKU34-100-O
ModelTriplelock - Oil Cowl, Chinamans Hat - u00d8 100
Material316L Stainless Steel, 0.10mm thick
Temperature RatingUp to 260u00b0C
Flue Liner DesignSingle skin with 5 convolutions and Triplelock seam
StandardsBS 715:1993, BS EN 1856:2
Warranty2 Years
ManufacturerMi-Flues Ltd (Triplelock)
Before installation, ensure that the flue liner will fit the chimney properly. Start by sweeping the chimney to remove any blockages and debris. Use a nose cone and string to carefully pull the liner into place. Once in position, secure the liner with a clamp plate and seal using a suitable cement for a weatherproof finish. Regular maintenance is recommended at least once a year to keep the system operating at its best. Caution: Always verify the compatibility of your appliance and consult professional advice if uncertain about any installation steps.

The Triplelock - Oil Cowl features a Triplelock seam folded in three planes, ensuring a highly secure seal. Constructed from 316L grade stainless steel, it is also highly durable.

Yes, it is suitable for use with gas appliances as specified by the fire manufacturer, as well as oil appliances up to 28-second viscosity.

The Triplelock - Oil Cowl can handle temperatures not exceeding 260°C.

It is recommended to have it swept and maintained at least once a year, or more frequently if necessary.

The flue liner should be fitted from the top, using a nose cone and string to pull it into place. Secure it with a clamp plate and seal with suitable cement for a weatherproof finish.

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

Ensure the liner will fit the chimney, sweep the chimney, and check the condition of your pot. Use a nose cone and string for installation.

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