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National Flues introduces Pack 704, an essential pot replacement kit designed for seamless, compliant flue liner installations. This MI-FLEX compatible kit, featuring a 150mm to 180mm MR flex adaptor, offers a complete solution perfect for chimney renovations and new installations alike.
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In Stock
£132.99
with free delivery
Give us a call if you find it cheaper and we'll try to price match.
At a Glance
Comprehensive kit including top plate, top clamp, nose cone, increasing adaptor, and chimney notice plate
Compatible with MI-FLEX 316 and 904 flexible flue liners
Designed for multi-fuel use (wood [<20% moisture], smokeless coal, gas, oil)
Engineered from durable 316L stainless steel with a natural finish
Fully compliant with Building Regulations Document J for masonry chimneys
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Pack 704 is your comprehensive pot replacement kit specifically designed to work with MI-FLEX 316 and 904 flexible flue liners. Perfectly designed for multi-fuel usage, these accessories ensure a secure and compliant fitting within masonry chimneys. The pack includes a top plate, top clamp, nose cone, increasing adaptor, and a chimney notice plate, offering all you need for an effective flue liner installation.
Suitable for appliances up to 600°C, this kit supports wood with less than 20% moisture, smokeless coal, gas, and oil. The system demands a masonry chimney for safe installation, meeting all Building Regulations Document J requirements. Additional components like a chimney cowl or terminal may be necessary to provide weather and bird protection.
SKU: 20-180-P704
Technical Specifications
SKU
20-180-P704
Product Name
Pack 704 - Pot Replacement Kit with 150mm to 180mm MR Flex Adaptor
Material
316L Stainless Steel
Colour Finish
Natural / Stainless Steel
Temperature Rating
Up to 600u00b0C
Compatible Fuels
Wood (<20% moisture), Smokeless Coal, Gas, Oil
System
MI-FLEX Accessories MF20
Certifications
HETAS / CE
Components Included
Top Plate, Top Clamp, Nose Cone, Increasing Adaptor, Chimney Notice Plate
Pack 704 is engineered exclusively for use in masonry chimneys. Prior to installation, ensure your chimney is fully enclosed in accordance with Building Regulations Document J. Follow these steps: verify precise measurements, confirm all components are present, and adhere strictly to the provided installation guidelines for MI-FLEX systems. Additional components such as a chimney cowl or terminal may be required for optimal weatherproofing and bird protection. If in doubt, consult a professional chimney sweep or installer.
Pack 704 includes a 180mm top plate, 180mm top clamp, 180mm nose cone, an increasing adaptor (150mm SW to 180mm Flex), and a chimney notice plate.
Yes, it's suitable for wood with less than 20% moisture, smokeless coal, gas, and oil appliances, supporting temperatures up to 600°C.
No, Building Regulations Document J dictates that flexible flue liners must be fully enclosed within a masonry chimney. Non-masonry enclosures like timber or plasterboard are not acceptable.
The increasing adaptor helps transition from a 150mm single wall to a 180mm flexible liner, ensuring a secure and efficient connection.
While not included, a chimney cowl or terminal is recommended to offer weather and bird protection for your chimney.
It's recommended to sweep solid fuel chimneys twice a year: once at the end of the heating season and once before the next season begins. Annual inspections and maintenance of the appliance are also advised.
For solid fuel applications, you can find a list of HETAS registered chimney sweeps at www.hetas.co.uk.
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.
Pack 704 is the definitive solution for homeowners and tradespeople looking to upgrade or replace their chimney pot during the installation of a new flexible flue liner. This guide provides a thorough overview, addressing common questions, highlighting key features and benefits, and offering practical installation advice. With detailed explanations and a focus on regulatory compliance, you can proceed with confidence.
What is Pack 704?
Pack 704 is a complete pot replacement kit tailored for masonry chimneys. It is designed to integrate seamlessly with MI-FLEX 316 and 904 flue liners. The kit includes a top plate, top clamp, nose cone, increasing adaptor, and a chimney notice plate, all manufactured from rugged and corrosion-resistant 316L stainless steel. The natural finish ensures that the kit complements both modern and traditional chimney aesthetics.
Key Features and Their Benefits
Comprehensive Component Set:
When upgrading your chimney, having all necessary components in one package simplifies the process. Pack 704 includes everything required to replace the old chimney pot, minimising the need for additional purchases.
Versatility with Fuels:
This kit is suitable for a wide range of fuel types, including wood (with less than 20% moisture content), smokeless coal, gas, and oil. This broad compatibility ensures that whether you run a solid fuel or a multi-fuel appliance, your installation is secure and efficient.
Enhanced Safety and Compliance:
Manufactured to meet Building Regulations Document J, Pack 704 is engineered for safe installation within masonry chimneys. This adherence to strict standards provides peace of mind, ensuring that all safety requirements are met.
Temperature Resilience:
With the capability to withstand temperatures up to 600°C, this kit is robust and reliable. This is particularly important for appliances that generate high heat, ensuring your safety and the longevity of your installation.
Efficient Transition:
The increasing adaptor included in the kit facilitates an effortless transition from a 150mm to an 180mm configuration. This precise adaptation helps in avoiding common installation issues, leading to a secure and durable setup.
Addressing Common Concerns
Many users are concerned about the compatibility and ease of installation when upgrading their chimney systems. Here's what you need to know:
Q: Will this kit work with my existing chimney system?
A: Pack 704 is designed specifically for masonry chimneys and is fully compatible with MI-FLEX 316 and 904 flue liners. If your chimney is built to the modern masonry standard, this kit is an excellent fit.
Q: Do I need additional accessories for a secure installation?
A: While Pack 704 includes all the essential components for a compliant installation, optional accessories such as chimney cowls or terminals are recommended for enhanced weatherproofing and bird protection. These accessories can be easily found through our extended product range.
Q: Can I install this kit myself?
A: The installation process is straightforward for those with experience in DIY projects. However, if you are not confident or if install challenges arise, it is advisable to consult with a professional chimney sweep or installer to ensure everything is correctly and safely fitted.
Step-by-Step Installation Overview
Before starting, ensure the chimney is fully enclosed as per Building Regulations Document J. Measure your chimney accurately to confirm that Pack 704’s components will fit perfectly. Begin by removing the old chimney pot carefully, then proceed with the following steps:
1. Secure the Top Plate: Position the top plate firmly against the chimney top to serve as a stable base.
2. Install the Top Clamp and Nose Cone: These components ensure the flue liner is tightly secured, reducing any risk of dislodgement under high temperature conditions.
3. Fit the Increasing Adaptor: This adaptor is critical for transitioning from a 150mm to an 180mm configuration; ensure it is aligned properly.
4. Place the Chimney Notice Plate: Install the notice plate in a visible spot to inform users of the flue arrangement and any important safety notes.
Take care to follow all provided guidelines and, if necessary, refer to professional advice for optimal results.
Why Choose Pack 704 from National Flues?
Expertise and Reliability:
National Flues is synonymous with quality and customer satisfaction. Our products are designed to meet stringent industry standards, ensuring that every installation is safe, compliant, and long-lasting.
Competitive Pricing:
Our commitment to providing exceptional value means you receive a robust product without compromising on quality. The price reflects not only the material quality but also the engineering behind seamless installations.
Nationwide Delivery and Support:
We offer reliable and prompt nationwide delivery. From the moment you decide to purchase, our support team is on hand to provide guidance, ensuring that any optional accessories you might need are easily accessible.
Customer Centric Approach:
Our dedicated customer service ensures that whether you are a tradesperson or a homeowner, you receive detailed product information, installation advice, and ongoing support. We understand that upgrading your chimney is a substantial investment, and we strive to make the process as smooth and beneficial as possible.
Final Considerations
Upgrading your chimney system using Pack 704 guarantees a reliable and efficient installation. With its comprehensive component set, high tolerance to temperature, and adherence to regulatory standards, this kit is designed to provide a long-term solution that ensures both safety and performance. Don’t overlook the optional accessories which can further enhance your installation by offering additional weatherproofing and protection against external elements.
Before making your purchase, carefully review your chimney’s current setup and ensure it meets the mandatory criteria for masonry installations. Consult with experts where necessary, and prepare for a project that not only upgrades your chimney but also increases the overall efficiency and safety of your home heating system.
Don’t wait any longer to improve your chimney system – add Pack 704 to your cart or call 01670 206 999 today.
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