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Sflue Black (2119707B) - Increaser - Ø 152-178mm (42-150-002)
Enhance your chimney system with the Sflue Black Increaser Ø 152-178mm (2119707B) from National Flues. This premium chimney flue adapter is expertly designed for wood, oil, and gas appliances, delivering unmatched durability, safety, and efficiency. Trusted by both homeowners and industry professionals, the Sflue Black Increaser offers a reliable solution that meets EN1856-1 standards and is HETAS approved, making it a top choice for modern chimney installations.
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£106.49
with free delivery
Give us a call if you find it cheaper and we'll try to price match.
At a Glance
Constructed with high-quality 304 and 316L stainless steel
0.4mm thick for optimal performance and durability
Designed for a range of fuels including wood, oil, gas, and low sulphur coal
HETAS approved and CE marked, meeting EN1856-1 standards
Integrated twist-lock couplers for secure connections
15-year manufacturing defect warranty with an additional 2-year paint warranty
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Please Note: All dimensions refer to the internal diameter of flues.
If unsure, please call 01670 206999 to ensure you choose the correct products.
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.
The Sflue Black Increaser Ø 152-178mm (2119707B) is designed for seamless integration with your chimney flue system. Ideal for use with solid fuel and gas/oil appliances including woodstoves, gas coal effect fires, and oil and gas boilers, this increaser is both durable and efficient. Constructed with high-quality 304 grade stainless steel for the outer skin and 316 grade stainless steel for the inner skin, both 0.4mm thick, it ensures longevity and stability.
The 230kg/m3 density compressed rockwool insulation encapsulated within twist-lock couplers guarantees safety and performance. With full laser-welding technology and an 8 barbed twist lock system, all parts are secured with a locking band, maintaining a 50mm safety distance from any combustible materials. Approved by HETAS and CE-marked, this increaser adheres to EN1856-1 T450 N1 D V2 L50040 G50 standards, making it a top choice for your chimney needs.
SKU: 42-150-002
Technical Specifications
SKU
42-150-002
Model
2119707B
Size
u00d8 152-178mm
Inner Material
316L Stainless Steel (0.40mm thick)
Outer Material
304 Stainless Steel (0.40mm thick)
Insulation
230kg/m3 density compressed rockwool
Approval
HETAS / CE
Warranty
15 Years manufacturing, 2 Years paint
Installation
Twist-lock couplers with a mandatory 50mm safe distance from combustibles
• It is recommended that the Sflue Black Increaser be installed by a certified professional to ensure safety and compliance with local building regulations.
• Ensure that all components are securely fastened using the integrated twist-lock couplers.
• Maintain a minimum clearance of 50mm from any combustible materials as per guidelines.
• Verify compatibility with your appliance prior to installation.
• Follow the manufacturer's instructions closely to achieve optimal performance and safety.
• If unsure at any stage, consult the National Flues advisory team for expert guidance.
It is made from high-quality, durable materials designed to withstand harsh weather conditions and provide long-lasting performance.
Absolutely, the Sflue Black Increaser is suitable for both residential and commercial properties.
The increaser is designed for straightforward installation, making it accessible for both DIY enthusiasts and professional installers.
Yes, National Flues provides reliable and prompt nationwide delivery for all our products, including the Black Increaser.
Yes, we offer trade accounts to help industry professionals get the best prices and services.
Delivery Information +
We work relentlessly to ensure you get your order fast.
Estimated delivery for this product is Wednesday, April 30th.
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 on a retail basis. Give us a call if you find it cheaper and want to buy from us.
Read our review in our Sflue Black (2119707B) - Increaser - Ø 152-178mm buyers guide
Introduction
Choosing the right chimney flue accessory is critical to ensuring the safety and efficiency of your heating system. The Sflue Black Increaser Ø 152-178mm (2119707B) from National Flues is engineered to expand the diameter of your appliance outlet, making it an ideal selection for those relying on wood, oil, gas, or low sulphur coal. In this guide, we will walk you through the benefits, installation process, and key considerations to help you make an informed decision.
Key Benefits
The Sflue Black Increaser is not just an accessory – it is a carefully designed solution that brings multiple advantages:
• Durability and Strength: Constructed from 304 grade stainless steel on the outside and 316 grade on the inside, this increaser guarantees long-lasting performance even in harsh weather conditions.
• Safety Assured: With a full HETAS approval and CE marking, the product complies with rigorous standards and provides a safe barrier by maintaining a 50mm clearance from combustible materials.
• Efficient Installation: The integrated twist-lock couplers and the straightforward design allow for a quick, secure installation process, ensuring that your chimney system performs reliably over time.
• Versatility: Suitable for a range of fuel types, this increaser delivers excellent support for various solid fuel and gas/oil appliances, making it a versatile choice for both new and existing installations.
How the Sflue Black Increaser Works
When it comes to maximising the efficiency of your chimney, proper air flow and heat insulation are key. The Sflue Black Increaser works by increasing the diameter of the appliance outlet, which in turn helps to improve the draft and overall combustion process. This seamless integration supports better fuel efficiency and reduces the risk of blockages or overheating.
The product’s robust construction and precision engineering mean that it can handle the high temperatures and stresses typical of chimney operations, protecting your home from potential hazards. Additionally, the inclusion of durable insulation materials ensures that the heat is contained within the flue, optimising energy use while safeguarding the surrounding structure.
Installation Guidelines
Pre-Installation Considerations
Before beginning the installation, always verify that your existing chimney system is compatible with the Sflue Black Increaser. Check the manufacturer's specifications and ensure that the appliance outlet meets the required measurements. This consideration avoids any unnecessary delays or complications during the installation process.
The Installation Process
1. Assessment: Conduct a thorough inspection of your current chimney system and identify any areas that may require additional reinforcement or adjustment.
2. Preparation: Gather all necessary tools and safety equipment. Make sure that the installation site is clear and properly ventilated.
3. Fitting the Increaser: Begin by aligning the Sflue Black Increaser with the appliance outlet. Secure it in place using the integrated twist-lock couplers, ensuring that all connections are tight.
4. Safety Checks: Verify that there is a minimum 50mm clearance from any combustible materials. Double-check all fastenings to ensure that they meet the recommended safety standards.
5. Final Inspection: Once installed, a final review is essential. Confirm that the increaser has been correctly fitted and that the flue system operates as expected.
Important Warnings
- Always adhere to local building codes and safety regulations during installation.
- If you are not completely confident in installing this product yourself, consult a professional installer.
- Regular maintenance checks should be scheduled to ensure the ongoing safety and efficiency of your chimney system.
Addressing Common Concerns
Quality and Durability
Many customers may worry about the longevity of their chimney components. The use of high-grade stainless steel and the robust design of the Sflue Black Increaser ensure that your investment is protected against the rigours of daily use and severe weather conditions.
Safety and Compliance
Safety is paramount when dealing with heating systems. The Sflue Black Increaser is HETAS approved and CE marked, which means it has met stringent industry standards for performance and safety, providing reassurance to homeowners and professionals alike.
Ease of Installation
We understand that not everyone is a professional installer. The simplicity of the twist-lock coupler design and the clear installation instructions make the Sflue Black Increaser accessible to DIY enthusiasts, while still delivering professional-grade performance.
Versatility for Different Fuels
Whether your heating system uses wood, oil, or gas, the Sflue Black Increaser is engineered to deliver reliable performance across a range of fuel types. This versatility eliminates the need to purchase multiple products for different systems, streamlining your maintenance and installation process.
Conclusion
In summary, the Sflue Black Increaser Ø 152-178mm (2119707B) offers a robust, safe, and efficient solution for improving the performance of your chimney flue system. Its high-quality materials, precise engineering, and user-friendly installation process set it apart from other products on the market. By addressing common concerns regarding durability, safety, and fuel versatility, National Flues continues to provide a trusted name in the chimney accessories industry. The technical innovations and rigorous testing behind this product ensure that it meets the highest standards, making it an essential addition to your heating system.
Make a smart, long-term investment in the performance and safety of your home. Add to cart now or call 01670 206 999.
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