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Mi-Pellet - Reducer Ø 125mm Boiler to Ø 100 (43-100-008)

The National Flues Mi-Pellet Reducer Ø 125mm Boiler to Ø 100 is a high-performance accessory designed for a range of flue systems including pellet, gas, oil, and solid fuel appliances. This reducer combines robust zero carbon steel construction with a modern matt black powder enamel finish, making it an essential component for safe and efficient flue connections. Read more...
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At a Glance

  • High temperature tolerance up to 600°C
  • Constructed from robust zero carbon steel
  • Durable powder enamel coating in a sleek matt black finish
  • Suitable for gas, oil, and solid fuel appliances
  • Engineered for compliance with EN1856-2 T600 N1 Vm L8010 G375
  • Maintains safe clearance of 375mm from combustible materials

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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:

  • 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

The Mi-Pellet Reducer Ø125mm Boiler to Ø100 is designed for seamless connection between your appliance and flue systems. Perfect for gas, oil, and solid fuel appliances, it withstands temperatures up to 600°C. This high-quality connecting pipe is crafted from zero carbon steel with a durable vitreous enamel coating in a sleek matt black finish.

Suitable for applications up to T200 when fitted with a seal, it also achieves a P1 pressure rating for pellet installations. Note that it should not be used to pass through ceilings or combustible walls and must be installed correctly to ensure condensates remain within the flue system. Provision for inspection and cleaning is necessary, especially for solid fuel applications, which should be maintained at least once a year.

For installations, ensure it is placed 375mm away from combustible materials and that appropriate PPE is worn.

SKU: 43-100-008

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
DimensionsØ 125mm to Ø 100mm
MaterialZero Carbon Steel
Steel Thickness0.7mm
CoatingPowder Enamel
Coating Thickness0.3mm
FinishMatt Black
Temperature Rating600°C
Clearance375mm from combustibles
CertificationEN1856-2 T600 N1 Vm L8010 G375
When installing the Mi-Pellet Reducer, ensure that all connections are properly aligned and securely fastened to maintain optimal safety and performance. The reducer must be installed with a minimum clearance of 375mm from any combustible materials. Do not utilise this product to penetrate ceilings or combustible walls, as it can compromise the integrity of your installation. For T200 applications where a seal is fitted, ensure all joints are clean and free of debris. Regular inspection and cleaning—especially for solid fuel systems—are essential to maintain safe operation, and any cut edges should be immediately treated with high-temperature paint to prevent rusting. Always follow manufacturer guidelines and wear appropriate PPE during installation.

The Mi-Pellet Reducer Ø125mm Boiler to Ø100 is used to connect your appliance to a flue liner, chimney stack, or twin wall flue system.

Yes, the Mi-Pellet Reducer is suitable for gas, oil, and solid fuel appliances.

The Mi-Pellet Reducer can withstand temperatures up to 600°C.

No, it should not be used to pass through ceilings or combustible walls.

No, for T600 high-temperature installations, sealing the joints is not required.

Chimneys serving solid fuel appliances should be maintained at least once a year.

Yes, it can be cut to size, but any exposed steel should be covered with high-temperature paint to prevent rusting.

 

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