Sump Adaptor (325mm sq. plate) - Ø 200
At a Glance
- - Constructed from robust 316-grade stainless steel
- - Downward-facing spigot ideal for single wall pipes
- - Features a 325mm square plate for secure mounting
- - Designed exclusively for chimney stacks with clay liners
- - Provides a safe, airtight, and fire-resistant connection

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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: [email protected]
- Info
- Specs
- Install
- FAQs
The Sump Adaptor (Ø 200) with a 325mm square plate is an essential component for connecting to the base of a chimney stack that has an existing clay liner, without the need for an additional chimney flue liner. It ensures a seamless and secure fit, designed with a downward-facing spigot to suit single wall pipes. Constructed from robust 1mm thick, 316-grade stainless steel, this adaptor promises longevity and resistance to the harshest conditions.
Installation is straightforward: Position the plate against the underside of the stack, mark and secure it with screws into the surrounding masonry. For an optimal seal, use Fire Cement and Fire Rope. The single wall pipe can then be easily mounted onto the spigot, finalising with additional Fire Cement and Fire Rope to ensure airtight connections.
This adaptor must be used only after the existing clay liner passes a thorough smoke test to confirm it is in good condition.
SKU: 28-8-SA
Technical Specifications | |
---|---|
Material | 316-grade stainless steel (1mm thick) |
Plate Dimensions | 325mm x 325mm |
Pipe Compatibility | u00d8200 single wall pipe |
Installation Requirements | Screws, Fire Cement, and Fire Rope |
Design | Downward-facing spigot for ease of installation |
Application | For chimney stacks with existing, smoke-tested clay liners |
Delivery Information +
We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Thursday, April 3rd. 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. If you find it cheaper within 48 hours, we'll refund the difference.
National Flues Ltd Verdict
The Sump Adaptor (325mm sq. plate) - Ø 200 is an excellent choice for connecting your chimney stack to a clay liner. National Flues prides itself on delivering high-quality products nationwide. Whether you are a retail or trade customer, you can rely on us for unbeatable prices and prompt delivery.
The Sump Adaptor is designed to connect the bottom of a chimney stack that has a clay liner in place, providing a secure connection for a single wall pipe.
National Flues is a trusted supplier of high-quality fireplaces and flues across the UK. Renowned for competitive pricing and reliable delivery, National Flues serves both retail and trade customers with unwavering commitment to excellence.
