Product Description

125mm VIT-Smooth 33° Vitreous Enamel Flue Elbow

Model: 67-125-032

The 125mm VIT-Smooth 33° vitreous enamel flue elbow creates a controlled change of direction within a compatible 125mm single-wall connecting flue. Its 33-degree angle makes it particularly useful for forming a shallow offset or aligning stove pipe with the chimney connection above.

Made from 1.2mm zero-carbon steel, the elbow has a vitreous enamel coating on its internal and external surfaces. Therefore, it provides a durable and heat-resistant flue component with an attractive matt black finish.

The two-segment construction creates a smooth change of direction. However, the installer must check the required offset, available space and complete chimney design before ordering.

125mm VIT-Smooth 33° Elbow Features

• 125mm (5-inch) nominal flue diameter
• Fixed 33-degree angle
• Two-segment elbow construction
• Manufacturer model number: 67-125-032
• Designed for compatible VIT-Smooth connecting flues
• Creates a shallow offset or change of direction
• Made from 1.2mm zero-carbon steel
• Approximately 0.2mm vitreous enamel coating
• Approximately 1.4mm total thickness, including enamel
• Internal and external vitreous enamel finish
• Heat-resistant matt black colour
• Friction-fit connections
• Suitable for compatible gas, oil and solid-fuel appliances
• Maximum continuous operating temperature: 600°C
• Product designation: EN 1856-2 T600 N1 Vm L80120 G375
• Minimum declared distance from combustible materials: 375mm
• Manufactured in the UK
• 12-year warranty, subject to the manufacturer’s terms

Technical Specification

• Product type: Single-wall flue elbow
• Nominal diameter: 125mm (5 inches)
• Angle: 33°
• Construction: Two segment
• Material: Zero-carbon steel
• Steel thickness: 1.2mm
• Enamel thickness: Approximately 0.2mm
• Total thickness: Approximately 1.4mm
• Coating: Internal and external vitreous enamel
• Colour: Matt black
• Joint type: Friction fit
• Temperature classification: T600
• Product standard: EN 1856-2
• Distance from combustibles: 375mm
• Model: 67-125-032

What Is a 33° Flue Elbow Used For?

This elbow allows a compatible 125mm stove pipe to change direction by 33 degrees. For example, an installer may use it to align the connecting pipe with an offset chimney opening or avoid a suitable non-combustible obstruction.

Its shallower angle can provide a more gradual change of direction than a 45-degree elbow. As a result, it may help create the required offset while keeping the flue route relatively direct.

However, the component does not guarantee a particular offset by itself. The final displacement depends on the number of elbows, their orientation and the length of pipe fitted between them.

Why Choose VIT-Smooth?

VIT-Smooth combines strong steel construction with a carefully finished vitreous enamel surface. The welds are designed to be discreet, while those on the bends are ground smooth to create a clean and professional appearance.

Furthermore, the internal and external enamel coating helps protect the steel against heat, combustion gases and corrosive deposits. Its matt black finish also complements many traditional and contemporary stoves.

Suitable Applications

• Compatible wood-burning stoves
• Compatible multifuel stoves
• Suitable gas heating appliances
• Suitable oil-fired appliances
• 125mm VIT-Smooth connecting flues
• Visible single-wall stove-pipe installations
• Shallow offsets within a connecting flue
• Connections leading towards a suitable chimney or flue system

Planning a Flue Offset

Installers commonly use two angled elbows to create an offset before returning the pipe to a vertical route. The distance achieved depends on the pipe length fitted between the elbows and the orientation of each component.

Always consult the product dimensions when calculating the offset and installed height. In addition, ensure the complete arrangement remains properly supported and provides suitable access for inspection and sweeping.

Keep the flue route as short and direct as reasonably possible. Every additional bend creates resistance to the flue gases and may make chimney cleaning more difficult.

Installation and Safety Information

Use VIT-Smooth only as a single-wall connecting flue between a compatible appliance and a suitable chimney, flexible liner or insulated twin-wall system. Never use this component to pass through a wall, ceiling, roof or concealed void.

Maintain at least the declared 375mm distance from combustible materials unless the appliance or another approved installation method requires a greater clearance. Combustible materials can include timber, furniture and combustible wall finishes.

Install the elbow with the smaller or male end pointing downwards towards the appliance. This arrangement helps keep condensate and deposits inside the flue route.

The friction-fit joints should engage fully and remain mechanically secure. Do not use jointing material to compensate for damaged, incompatible or poorly fitting components.

A competent installer should design and fit the complete chimney system. For solid-fuel work, use a suitably qualified installer, such as a HETAS-registered installer, or notify Building Control where required.

Finally, follow the appliance instructions, current VIT-Smooth guidance and applicable Building Regulations. The appliance manufacturer’s instructions determine the permitted flue diameter, route and number of bends.

Inspection and Chimney Sweeping

Bends can make the flue more difficult to inspect and sweep. Therefore, the system must provide suitable cleaning access, particularly near changes of direction.

A competent person should inspect and clean the chimney regularly. The required frequency depends on the appliance, fuel, level of use and chimney condition.

Use suitable cleaning equipment that will not damage the vitreous enamel coating. Replace any component that shows significant corrosion, enamel damage, distortion or insecure joints.

Product Guide

• Download the VIT-Smooth brochure

Why Buy from SNH Tradecentre?

• Competitive prices: We aim to offer excellent value across our flue and chimney range.
• Helpful advice: Our team can help you compare stove-pipe sizes, bends and adaptors.
• Genuine products: Order from an established plumbing and heating merchant.
• Collection available: Collect eligible in-stock products from our Birchington trade counter.
• UK delivery: Choose from the available delivery services at checkout.
• Trade and public welcome: We supply installers, homeowners, landlords and property professionals.

Need help selecting the correct elbow? Call SNH Tradecentre on 01843 842727 before ordering. If possible, have the stove model, flue diameter and required offset measurements ready.

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Frequently Asked Questions

What diameter is this VIT-Smooth elbow?

It has a nominal diameter of 125mm, equivalent to approximately five inches. It is designed for compatible 125mm VIT-Smooth connecting-flue components.

What angle is this flue elbow?

It changes the flue direction by 33 degrees. This shallower angle may suit installations where a smaller offset is required.

Can I use two 33-degree elbows to form an offset?

Yes, two compatible elbows may create an offset when the appliance instructions and chimney design permit it. The installer must calculate the displacement, support the pipe correctly and maintain sweeping access.

How do I calculate the offset?

The final offset depends on the elbows’ dimensions, their orientation and the pipe length installed between them. Refer to the manufacturer’s dimensions and ask a competent installer to calculate the arrangement.

Can I use this elbow with a wood-burning stove?

It may suit a compatible wood-burning or multifuel stove. However, the appliance manufacturer must permit the 125mm diameter, component type and proposed flue layout.

What is the maximum operating temperature?

The VIT-Smooth system carries a T600 classification. Therefore, its maximum continuous operating temperature is 600°C. Always observe any lower limit stated by the appliance manufacturer.

Can this elbow pass through a wall or ceiling?

No. This is a single-wall connecting-flue component. It must not pass through walls, ceilings, roofs or concealed spaces. These areas normally require a suitable insulated chimney system.

How far must it be from combustible materials?

The product designation declares a minimum distance of 375mm from combustible materials. However, the installer must assess the complete installation and observe any greater clearance required by the appliance manufacturer.

Does the connection require fire cement?

The component uses friction-fit joints, so fire cement is not normally required between correctly matched VIT-Smooth components. Nevertheless, follow the latest manufacturer instructions for the complete installation.

Which way up should the elbow be installed?

Install the smaller or male end downwards towards the appliance. This helps keep condensate and combustion deposits within the flue system.

Who should install this flue elbow?

A competent installer should fit it as part of a correctly designed chimney system. For solid-fuel installations, consider using a HETAS-registered installer or arranging Building Control notification where required.

Manufacturers may update specifications, dimensions and warranty terms. Therefore, check the latest VIT-Smooth literature and confirm the proposed flue layout before ordering or installation.