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MI-VIT Lite - Increaser - Ø 125-130mm (27-125-007)

National Flues presents the MI-VIT Lite Increaser - Ø 125-130mm, a premium, high-performance connecting pipe designed for gas, oil, and solid fuel appliances. This top-quality flue liner accessory enhances your chimney system with durability and efficiency, making it an ideal choice for both domestic and commercial heating solutions.
£28.99
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At a Glance

    Versatile connecting pipe for multiple fuel types
    Constructed from zero carbon steel with a durable powder enamel coating
    Sleek matt black finish that enhances any installation
    Withstands temperatures up to 600°C
    Complies with EN1856-2 T600 N1 Vm L8010 G375 approval
    Designed for seamless integration with flue liners, chimney stacks, and twin wall systems

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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.
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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 MI-VIT Lite Increaser - Ø 125-130mm is a versatile and durable single-skin connecting pipe designed for gas, oil, and solid fuel appliances operating at temperatures up to 600 degrees Celsius. Manufactured from zero carbon steel with a vitreous enamel coating in a sleek matt black finish, this increaser ensures optimal performance and longevity. It’s ideally used to connect your appliance with a flue liner, chimney stack, or twin wall flue system.

However, note that it should never be used to pass through ceilings or combustible walls.Installation is straightforward yet crucial: MI-VIT Lite should always be installed the correct way up, with the smaller diameter pointing downward to ensure condensates stay within the flue system. The pipe does not require joint sealing for T600 high-temperature installations, but for pellet applications where positive pressure (P1) is present, seals must be installed on every joint. Cutting the MI-VIT Lite is possible, but ensure all exposed steel is treated with high-temperature paint to prevent rust over time.Proper maintenance is essential.

For solid fuel applications, install access doors at changes in direction to facilitate chimney inspection and cleaning. Chimneys should be swept at least once a year to ensure safety and efficient operation.

SKU: 27-125-007

Technical Specifications
Product NameMI-VIT Lite Increaser - u00d8 125-130mm
MaterialZero Carbon Steel
Steel Thickness0.7mm
CoatingPowder Enamel
Coating Thickness0.3mm
ColourMatt Black
Operating TemperatureUp to 600u00b0C
Approval StandardEN1856-2 T600 N1 Vm L8010 G375
Minimum Combustible Distance375mm
Always install the MI-VIT Lite Increaser with the smaller diameter pointing downwards to ensure that condensates remain within the flue system. It is crucial that this product is not used to pass through ceilings or combustible walls. For pellet applications where positive pressure (P1) is present, seals must be installed on every joint. If cutting the pipe to the required size, be sure to treat any exposed steel with high-temperature paint to safeguard against rust. For solid fuel systems, it is advised to integrate access doors at points where the flue changes direction to facilitate routine inspections and efficient cleaning. Always adhere to appropriate PPE guidelines during installation to maintain a safe working environment.

The MI-VIT Lite Increaser is used to connect appliances to flue liners, chimney stacks, or twin wall flue systems, supporting gas, oil, and solid fuel appliances.

Yes, it is suitable for gas, oil, and solid fuel appliances operating at temperatures up to 600 degrees Celsius.

Install it with the smaller diameter pointing downward to keep condensates within the flue system. It does not need joint sealing for T600 installations but requires seals for P1 positive pressure applications.

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

Yes, especially for solid fuel appliances. Chimneys should be swept at least once a year, and access doors should be installed for inspection and cleaning.

Yes, but any exposed steel must be covered with high-temperature paint to prevent rusting.

Wear appropriate PPE at all times and ensure MI-VIT Lite 125mm is installed at least 375mm away from combustible materials such as wood or plasterboards.
Delivery Information +

We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Monday, May 19th. Delivery times of products not in our warehouses depend on product availability and shipping. If you need a definitive delivery time give us a call. If you need faster stove or fireplace delivery please also 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. 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 on a retail basis. Give us a call if you find it cheaper and want to buy from us.

Read our review in our MI-VIT Lite - Increaser - Ø 125-130mm buyers guide

Enhance your heating system with the MI-VIT Lite Increaser – secure yours today!

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