Triplelock - Oil Cowl, Chinamans Hat - Ø 100
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

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]
- Info
- Specs
- Install
- FAQs
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 | |
---|---|
SKU | 34-100-O |
Model | Triplelock - Oil Cowl, Chinamans Hat - u00d8 100 |
Material | 316L Stainless Steel, 0.10mm thick |
Temperature Rating | Up to 260u00b0C |
Flue Liner Design | Single skin with 5 convolutions and Triplelock seam |
Standards | BS 715:1993, BS EN 1856:2 |
Warranty | 2 Years |
Manufacturer | Mi-Flues Ltd (Triplelock) |
Delivery Information +
We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Thursday, April 3rd. If you need faster stove or fireplace delivery please give us a call. We can often 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. If you find it cheaper within 48 hours, we'll refund the difference.
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National Flues Ltd Verdict
The Triplelock - Oil Cowl, Chinaman's Hat Ø 100 is a standout product in our collection. It’s essential for oil installations and boasts a robust Triplelock seal. We deliver across the UK and cater to both retail and trade customers.
The Triplelock - Oil Cowl is used to securely terminate a flue liner in oil installations, ensuring efficient and safe exhaust of gases.
National Flues is a leading supplier of fireplaces and flues in the UK, offering unbeatable prices, reliable delivery, and services tailored for both retail and trade customers.
