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175mm (7 inch) Flue Liner 316L for Gas and Oil (316L Grade) (4Z-180-1)

National Flues presents the high-quality 175mm (7 inch) 316L Grade Stainless Steel Flue Liner, an ideal solution for gas and oil appliance systems. This flue liner, engineered for durability and exceptional performance, offers a robust, leak-proof, and efficient solution for relining masonry chimneys. Read more...
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At a Glance

  • Premium 316L grade stainless steel for maximum durability.
  • Suitable for both gas and oil-fuelled appliances, ensuring broad compatibility.
  • Triplelock seal design offers a leak-proof, robust connection.
  • Kitemarked to BS 715 and CE Approved for top safety standards.
  • 10 Year Conditional Warranty for peace of mind.
  • Available in multiple lengths from 4m to 15m for a custom fit.

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: sales@nationalflues.com

Our 175mm (7 inch) Flue Liner is crafted from high-quality 316L grade stainless steel, making it the perfect choice for relining masonry chimneys in gas and oil appliance setups. Designed to operate with appliances firing up to 28-second oils and withstand temperatures up to 260°C, this liner ensures safety and efficiency. Featuring a single skin with a robust 0.10mm thickness and a five-convolution seam, our flue liners use a distinctive TRIPLELOCK seal for unparalleled durability and reliability.

This product is Kitemarked to BS 715 and meets the stringent BS EN 1856:2 standard.

SKU: 4Z-180-1

Delivery Information* +

We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Friday, November 14th. This is based on current lead times. Bear in mind that it is a busy time of year. If you need a product delivered by a specific time in the next 7 days, then please give us a call on 01670 206 999. Visit our Shipping Information page for more information.

About National Flues Ltd +

We began over 30 years ago as a fireplace shop in the North East. We now supply hundreds of trade professionals and thousands of retail customers, all across the UK, every month. We are still a family owned business, lead by the MD Neil, and always try our best to deliver the best possible experience. We also price match, so give us a call if you find this cheaper and want to buy from us. Visit our about us page to read a bit more.

Technical Specifications
Product Name175mm (7 inch) Flue Liner 316L for Gas and Oil (316L Grade)
Diameter175mm
Material0.10mm 316L Grade Stainless Steel
Joint MethodTriplelock
Fuel TypeGas and Oil
Temperature RatingUp to 260°C
KitemarkedYes
CE ApprovedYes
Warranty10 Year Conditional Warranty
StandardsBS EN 1856:2, BS 715
Length Options4m to 15m
Installation is straightforward when executed by a qualified professional. Ensure that the masonry chimney has been properly prepared and measured. Follow the comprehensive installation instructions provided with your flue liner. It is recommended to check the liner fit by using a sample section to verify the diameter throughout the chimney. Caution is advised when working at heights or with high-temperature materials. Always switch off the appliance and allow it to cool before beginning any installation work. If you are considering optional accessories such as specialised mounting brackets or additional insulation materials, consult our expert team to ensure compatibility with your installation requirements.

This flue liner is suitable for use with gas-powered appliances (as per the manufacturer's specifications) and oil-fired appliances that use oil up to 28 seconds.

While it's possible to install the flue liner yourself, we recommend hiring a professional to ensure proper installation and safety.

You can check if the liner will fit by pulling a small section of the same diameter liner you plan to use down the chimney.

Chimneys serving gas and oil appliances should be swept and maintained at least once a year, or more frequently if required.

Yes, comprehensive installation instructions are provided, covering detailed steps to ensure safe and effective installation.

The flue liner is Kitemarked to BS 715 and has been approved and tested to meet BS EN 1856:2 standards.

This particular flue liner is designed for gas and oil appliances. For wood-burning stoves, consider a liner rated for higher temperatures.

 

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