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Top Clamp - Ø 125 (20-125-C)
National Flues presents the Top Clamp Ø 125, a premium accessory integral to your MI-FLEX flue system installation. This high-quality product, crafted from 316L stainless steel, is perfect for securing flexible flue liners in masonry chimneys. Ideal for wood, oil, gas, and smokeless coal appliances, this top clamp ensures your chimney assembly is both reliable and compliant with Building Regulations. Enhance your chimney system with National Flues and explore our range of compatible flue system accessories to complete your installation.
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In Stock
£9.99
Give us a call if you find it cheaper and we'll try to price match.
At a Glance
Constructed from high-grade 316L stainless steel for durability and resistance to corrosion
Specifically engineered for MI-FLEX 316 and 904 flexible flue liners
Suitable for multiple fuel types including wood (moisture <20%), smokeless coal, gas, and oil
Designed to withstand temperatures up to 600°C
Meets Building Regulations Document J enforcement for masonry chimneys
Complements installation with the Top Plate and Top Insert Sleeve for enhanced stability
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The Top Clamp Ø 125 is a crucial component in the installation of flue systems, specifically designed for use with MI-FLEX 316 and 904 flexible flue liners. This accessory ensures a secure and stable flue assembly, making it a vital part of any fully integrated chimney system. Adhering to Building Regulations Document J, this top clamp must be used within a masonry chimney.
It is suited for appliances operating up to 600°C, making it ideal for wood (moisture <20%), smokeless coal, gas, and oil applications. The top fixings are crafted to support the vertical weight of the flue liner, ensuring that your chimney remains structurally sound and weatherproofed. Additionally, it must be paired with the Top Plate and Top Insert Sleeve to stabilise the liner at the top of the stack.
Regular maintenance and sweeping by a competent person are required to ensure longevity and safety, particularly for solid fuel applications. Consult HETAS for registered sweeps and avoid using chemical cleaners or mild steel tools on stainless steel chimneys.
SKU: 20-125-C
Technical Specifications
SKU
20-125-C
Designation
BSEN 1856-2 T600 N1 W V2 L50012 G
System
MI-FLEX Accessories MF20
Material
316L Stainless Steel
Colour Finish
Natural / Stainless Steel
Fuels
Wood (<20% moisture), Smokeless Coal, Gas, Oil
Approvals
HETAS, CE
Max Temperature
600u00b0C
Application
Masonry chimneys for flexible flue liners
The Top Clamp Ø 125 is designed for secure installation within a masonry chimney. It must be paired with the complementary Top Plate and Top Insert Sleeve to ensure optimal stability of the flue liner. During installation, ensure all components are aligned and secured according to the manufacturer’s guidelines. Regular maintenance, including periodic inspections and professional sweeping, is essential to maintain the safety and efficiency of the chimney system. Always avoid the use of chemical cleaners or mild steel tools on stainless steel components to prevent damage. Adhere to all safety warnings and Building Regulations Document J requirements to ensure compliance and longevity.
The Top Clamp Ø 125 is used to support the vertical (dead) weight of the flue liner in a chimney system, ensuring stability and safety.
It is suitable for use with wood (moisture <20%), smokeless coal, gas, and oil appliances, capable of withstanding temperatures up to 600°C.
No, Building Regulations Document J requires that flexible flue liners must be enclosed within a masonry chimney.
The Top Clamp Ø 125 should be used in conjunction with the Top Plate and Top Insert Sleeve for complete support at the top of the chimney stack.
Chimneys serving solid fuel appliances should be inspected and swept at least twice a year, while those for other fuels should be checked annually.
Regular maintenance ensures the chimney's safety and efficiency, preventing blockages and deposits which could pose a fire risk.
HETAS provides a list of registered chimney sweeps that can be found on their website.
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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.
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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.
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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 Top Clamp - Ø 125 buyers guide
National Flues Top Clamp Ø 125 Buyers Guide
Welcome to the comprehensive buyers guide for the Top Clamp Ø 125. This guide is designed to provide detailed information about the product, its applications, and the additional accessories available that ensure your chimney system operates at maximum safety and reliability. Whether you are a trade professional or a homeowner, understanding the intricacies of chimney installation is paramount.
Overview
The Top Clamp Ø 125 is an essential component in the assembly of modern flue systems. Manufactured from 316L stainless steel, it is engineered to offer long-lasting durability and effective support for MI-FLEX flexible flue liners. Its robust construction combined with suitability for high-temperature operations up to 600°C makes it an ideal choice for a variety of fuels including wood (with moisture content below 20%), smokeless coal, gas, and oil. With compliance to Building Regulations Document J, you can be assured that the installation will meet the highest safety standards.
Key Features and Their Benefits
- Robust Construction: The use of high-grade 316L stainless steel means that the top clamp is resistant to corrosion even under harsh weather conditions. This ensures longevity and minimal maintenance over time.
- Precision Compatibility: Designed specifically for MI-FLEX 316 and 904 flexible flue liners, it guarantees a secure fit, which is critical for the overall stability of the chimney system.
- High Temperature Resilience: With a temperature resistance of up to 600°C, this accessory is built to endure the intense heat generated during heating operations, providing reliability when it matters most.
- Regulation Compliant: The clamp meets the stringent requirements of Building Regulations Document J, making it a safe choice for installations in masonry chimneys.
- Integrated System Design: To achieve the best performance, this top clamp should be used in conjunction with the Top Plate and Top Insert Sleeve. This complete system ensures that the flue liner is held securely in place, minimising any risks associated with structural instability.
Installation Insights
The installation process is straightforward yet requires careful attention to detail. It is essential that the Top Clamp Ø 125 is installed only within a masonry chimney structure. Not only does this align with regulatory requirements, but it also offers the best performance and longevity for your flue system. When installing, make sure that you use the correct accessories, particularly the Top Plate and Top Insert Sleeve, to form an integrated support system.
During installation, ensure that all components are aligned properly to avoid any gaps that might compromise structural integrity. Regular inspections and maintenance, such as professional chimney sweeping, are crucial to preventing any blockages or inefficiencies that could potentially lead to safety issues. If you encounter any uncertainties during installation, consulting with a qualified professional or referring to the manufacturer's guidelines is highly recommended.
Optional Accessories to Consider
While the Top Clamp Ø 125 is a key element of your flue system, it works best as part of an integrated assembly. Optional accessories such as the Top Plate and Top Insert Sleeve are designed to complement the top clamp. These accessories work together to provide additional stability by securing the flue liner, thereby ensuring that your chimney system remains both structurally sound and weatherproof. It is always a good idea to explore related accessories if you are looking to optimise overall performance and safety. A quick search for these components can provide you with further options to enhance your installation.
Addressing Common Concerns
Many customers have questions regarding the compatibility and durability of chimney accessories. Below are some frequently asked questions:
- Is this clamp suitable for use with all types of fuels?
Yes, the Top Clamp Ø 125 is designed to work efficiently with wood (with less than 20% moisture), smokeless coal, gas, and oil-fired appliances. Its high temperature rating assures its performance under various conditions.
- Can I install this clamp on any chimney?
No, it must be installed within a masonry chimney to meet safety and compliance standards as per Building Regulations Document J.
- What additional components do I need for a proper installation?
For a complete and secure system, the Top Clamp Ø 125 should be used in tandem with the Top Plate and Top Insert Sleeve. These components ensure that the flue liner is adequately stabilised at the top of the chimney stack.
- How often should chimney maintenance be performed?
Regular maintenance is advised to ensure safety. For solid fuel appliances, a professional chimney sweep should inspect and clean the chimney at least twice a year, with annual checks for other fuels.
Final Thoughts
The Top Clamp Ø 125 is an indispensable component for any modern flue system. It offers durable construction, regulatory compliance, and high performance, making it a smart investment for ensuring the safety of your chimney. Additionally, pairing it with the recommended accessories not only enhances system stability but also extends the lifespan of your installation. National Flues is committed to providing high-quality products and reliable service, whether you are a homeowner looking for peace of mind or a trade professional aiming for perfection in installation.
Your chimney system deserves the best foundation possible, and the Top Clamp Ø 125 is designed to deliver on that promise. With its robust build, precision compatibility, and focus on safety, you can be confident in your decision to integrate this top clamp into your flue assembly.
Buy now or call 01670 206 999.
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