VIT-Smooth - Increaser - Ø 150-175mm
At a Glance
- - Seamless diameter transition for a flawless connection between flue sections
- - Constructed from robust zero carbon steel with a protective powder enamel finish
- - Designed for gas, oil, and solid fuel appliances operating up to 600°C
- - Friction-fit joints for straightforward assembly (optional sealing available)
- - Complies with stringent safety standards regarding combustibles
- - Optional accessories available, including access doors, jointing compounds, and high-temperature paints for enhanced installation and maintenance

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.
Have Questions?
Phone: 01670 206999
Email: [email protected]
- Info
- Specs
- Install
- FAQs
The VIT-Smooth Increaser Ø 150-175mm is a pivotal component for any efficient flue system. Designed for gas, oil, and solid fuel appliances with temperatures up to 600°C, this increaser ensures a smooth transition between different flue diameters. Constructed from zero carbon steel and coated with a durable powder vitreous enamel in a sleek matt black finish, it is engineered to last.
This single-skin connecting pipe is specifically for connecting your appliance to a Flue Liner, Chimney Stack, or Twin Wall Flue System and should not pass through ceilings or combustible walls.Installation is straightforward, but it's vital to maintain a safe distance of 375mm from any combustible materials. Ensure the VIT-Smooth is installed with the smaller diameter pointing downward to keep condensates within the system. While the friction-fit joints don’t require sealing, using a jointing compound like fire cement or high temperature silicone sealant can provide added security.
For a clean cut, remember to cover any exposed steel with high-temperature paint to prevent rusting. Always wear appropriate PPE during installation.Maintenance is essential, particularly for solid fuel appliances. VIT-Smooth pipes can be outfitted with access doors at directional changes for easy inspection and cleaning.
Regular chimney sweeping is recommended, at least once a year, to ensure optimal performance.
SKU: 67-150-002
Technical Specifications | |
---|---|
SKU | 67-150-002 |
Material | Zero Carbon Steel |
Steel Thickness | 1.2mm |
Coating | Powder Enamel |
Coating Thickness | 0.2mm |
Colour | Black |
Diameter | 150mm |
Applicable Temperature | Up to 600u00b0C |
Approval | EN1856-2 T600 N1 Vm L80120 G450 |
Installation Clearance | 375mm minimum from combustibles |
Suitable For | Gas, Oil, and Solid Fuel Appliances |
Delivery Information +
We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Tuesday, April 8th. 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.
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National Flues Ltd Verdict
The VIT-Smooth Increaser Ø 150-175mm is an excellent choice for ensuring a seamless connection in your flue system. We're proud to offer nationwide delivery, serving both retail and trade customers with reliability and competitive pricing.
The VIT-Smooth Increaser Ø 150-175mm is used to connect different diameter flue pipes, ensuring a smooth transitional fit for gas, oil, and solid fuel appliances within a flue system.
National Flues is a leading supplier of fireplaces and flues, known for unbeatable prices, reliable delivery, and exceptional customer service. We cater to both retail and trade customers nationwide with secure online payments and trade account options.
