Product Description

150mm 33 Degree Vitreous Enamel Flue Elbow

Model: 67-150-032

Create a gentle change of direction in your stove flue with the VIT-Smooth 150mm 33 Degree Vitreous Enamel Elbow. This smooth bend helps align a 150mm connecting flue with a chimney, flexible liner or insulated twin-wall flue system.

The 33-degree angle provides a more gradual change of direction than a 45-degree elbow. Therefore, it offers a useful option when the stove outlet and chimney connection have a smaller difference in alignment.

In addition, its smooth matt-black finish complements both modern and traditional stoves. VIT-Smooth coats the inside and outside of the elbow with vitreous enamel, which helps protect the steel from heat and corrosive combustion gases.

At a Glance

• 150mm (6-inch) vitreous enamel flue elbow
• 33-degree change of direction
• Ideal for creating a gentle flue offset
• Made from 1.2mm zero-carbon steel
• Internal and external vitreous enamel coating
• Approximately 1.4mm total finished thickness
• Smooth matt-black finish
• Friction-fit connection system
• Suitable for compatible gas, oil and solid-fuel appliances
• Temperature classification: T600
• Declared clearance to combustible materials: 450mm
• Model: 67-150-032
• EAN: 5060795860222

Key Features and Benefits

• 33-degree angle: Creates a gentle change in the direction of the flue.
• Useful offset component: Helps align the stove pipe with the main chimney route.
• 150mm diameter: Connects to compatible 6-inch VIT-Smooth components.
• Smooth elbow design: Produces a neat and professional-looking installation.
• Strong construction: Uses 1.2mm zero-carbon steel for durability.
• Internal enamel coating: Helps resist heat and combustion deposits.
• External enamel coating: Creates an attractive and easy-to-clean finish.
• Matt-black appearance: Complements most contemporary and traditional stoves.
• Friction-fit joints: Allow simple connection to matching components.
• T600 classification: Suits compatible high-temperature stove installations.

What Is a 33 Degree Flue Elbow?

A 33-degree elbow changes the direction of a connecting flue by 33 degrees. It provides a gentler angle than a 45-degree bend. As a result, it works well when the required offset remains fairly small.

For example, you can use the elbow to move the flue route around part of a fireplace opening. Alternatively, it can help align the stove pipe with an off-centre chimney or liner connection.

You can also use two compatible 33-degree elbows with a suitable straight pipe between them to create an offset. However, the length of pipe between the elbows will affect the final sideways movement and vertical rise.

Planning a Flue Offset

First, measure the difference between the stove outlet and the required vertical flue position. Next, check the space available for the elbows and connecting pipe. Finally, allow for the overlap at every joint.

The final offset will depend on the number of bends, their angles and the length of pipe between them. Therefore, check the product dimensions and calculate the complete route before ordering.

In addition, keep the number of bends to a practical minimum. A simpler flue route usually improves sweeping access and reduces resistance to the flow of combustion gases.

33 Degree vs 45 Degree Flue Elbow

Feature	33 Degree Elbow	45 Degree Elbow
Change of direction	Gentler	Greater
Typical use	Smaller alignment changes	Larger offsets
Offset with two bends	More gradual	Greater over the same pipe length
Planning requirement	Check full dimensions	Check full dimensions

The best option will depend on the required offset and the space available. Therefore, measure the installation carefully before choosing the elbow angle.

Why Choose VIT-Smooth?

VIT-Smooth provides a high-quality alternative to basic welded black stove pipe. The manufacturer carefully finishes the welded areas before applying the enamel. Consequently, the welds appear almost invisible and the bend has a clean, smooth shape.

The manufacturer forms the elbow from 1.2mm zero-carbon steel. It then adds approximately 0.2mm of powder vitreous enamel. Together, the steel and coating create a total finished thickness of approximately 1.4mm.

Furthermore, VIT-Smooth coats both the inside and outside of the fitting. The internal layer helps resist heat and corrosive combustion products. Meanwhile, the external layer creates a deep matt-black finish that matches most UK stoves.

VIT-Smooth 150mm Elbow Specification

• Product type: smooth flue elbow
• Model/SKU: 67-150-032
• EAN: 5060795860222
• Nominal internal diameter: 150mm (6 inches)
• Elbow angle: 33 degrees
• Material: zero-carbon steel
• Steel thickness: 1.2mm
• Coating: powder vitreous enamel
• Approximate enamel thickness: 0.2mm
• Approximate total finished thickness: 1.4mm
• Coating position: internal and external
• Colour: black
• Finish: smooth matt black
• Joint type: friction fit
• Fuel compatibility: gas, oil and solid fuel
• Temperature classification: T600
• Classification: EN 1856-2 T600 N1 Vm L80120 G450
• Declared minimum distance to combustible materials: 450mm
• Manufacturer warranty: 12 years, subject to its terms

Suitable Appliances and Flue Systems

You can use this elbow with compatible gas, oil and solid-fuel appliances. These may include wood-burning stoves, multifuel stoves and other domestic heating appliances.

However, always check the appliance instructions before ordering. The manufacturer will state the required flue diameter, temperature classification and permitted flue arrangement.

This elbow can form part of a route leading to:

• A suitable masonry chimney
• An approved flexible chimney liner
• A compatible chimney or liner adaptor
• An insulated twin-wall flue system
• Matching 150mm VIT-Smooth pipes and fittings

Application

This 150mm vitreous enamel elbow forms part of a visible single-wall connecting flue. It helps route combustion gases from a compatible appliance towards an appropriate chimney or insulated flue system.

The product carries a T600 temperature classification. Therefore, it has a nominal maximum continuous flue-gas temperature classification of 600°C.

Never use single-wall vitreous enamel stove pipe to pass through walls, ceilings, floors, roofs, cupboards or concealed spaces. Instead, use a suitable tested and insulated chimney system wherever the flue passes through the building structure.

Correct Installation Direction

Fit the elbow with the male or smaller-diameter end pointing downwards towards the appliance. The female end should face upwards towards the chimney.

This direction keeps condensates and combustion deposits inside the flue system. As a result, they can travel back towards the appliance instead of leaking onto the outside of a joint.

Push each connection together fully. In addition, align and support the flue so it does not place excessive weight or sideways force on the appliance outlet.

Jointing and Sealing

VIT-Smooth uses a friction-fit connection system. Therefore, joints between matching components do not normally require fire clay.

However, follow the instructions supplied with the appliance and complete flue system. If those instructions require a jointing compound, use only a suitable fire cement or high-temperature silicone sealant approved for the application.

Do not use ordinary household silicone because it may not withstand flue temperatures.

Sweeping and Inspection Access

This model does not include a built-in access door. Therefore, make sure the complete flue route provides suitable access for inspection and cleaning.

Changes of direction can make sweeping more difficult. Consequently, you may need a doored elbow, a doored straight pipe or an inspection tee nearby.

Discuss the cleaning route with the installer before fitting the system. This will help ensure that the chimney sweep can reach every part of the flue safely.

Can the Elbow Be Cut?

Avoid cutting a vitreous enamel elbow. Cutting may chip the protective coating, expose the steel and damage the shaped connection ends.

Instead, use compatible straight or adjustable components to achieve the required offset. This approach keeps the factory enamel and connection profiles intact.

If the manufacturer permits an alteration, protect every exposed steel edge with suitable high-temperature paint. Furthermore, make sure the altered component still provides a safe and secure joint.

Clearance from Combustible Materials

This elbow has a declared minimum distance of 450mm from combustible materials. Combustible materials may include timber, furniture, curtains and heat-sensitive building products.

In addition, do not automatically treat plasterboard as non-combustible. It may cover timber studs or form part of a combustible wall structure.

The stove or another system component may require a greater clearance. If the requirements differ, always follow the greatest stated distance.

Installation Safety

Before installation, confirm that the 150mm diameter matches the appliance and every adjoining component. Also, check that the planned number and angle of bends comply with the appliance and flue-system instructions.

The flue route should rise towards the chimney and avoid unnecessary changes of direction. Furthermore, the completed system must provide suitable support and safe sweeping access.

Installation must comply with the appliance instructions, current Building Regulations and all relevant standards. Therefore, we recommend using a suitably competent installer, such as a HETAS-registered installer where appropriate.

Inspection and Maintenance

Check the elbow and its joints regularly. Look for movement, damaged enamel, staining, corrosion or signs of leakage.

In addition, arrange regular chimney sweeping. The correct sweeping schedule will depend on the appliance, fuel and frequency of use.

Only clean the external enamel after the elbow has cooled completely. Use a soft, dry or slightly damp cloth. Avoid abrasive pads and harsh chemicals because they may damage the matt-black finish.

Finally, replace the elbow if it becomes badly damaged, distorted, corroded or insecure.

Product Guides and Matching Components

• Download the VIT-Smooth brochure
• Discover why we rate VIT-Smooth stove flue pipe
• View matching 150mm vitreous enamel flue components

Why Buy from SNH Tradecentre?

• Specialist stove, chimney and flue-system supplier
• Extensive range of matching 150mm VIT-Smooth components
• Practical product advice from an experienced team
• Nationwide UK delivery options
• Secure online ordering
• Trade counter in Birchington, Kent
• Support before and after your purchase

Need help calculating an offset or checking component compatibility? Call the SNH Tradecentre team on 01843 842727 before ordering.

You can also read SNH Tradecentre customer reviews on Google.

Frequently Asked Questions

What angle is this flue elbow?

The elbow changes the direction of the connecting flue by 33 degrees.

What diameter is the elbow?

It has a nominal internal diameter of 150mm, which equals approximately 6 inches.

Why choose a 33-degree elbow?

A 33-degree elbow creates a gentler change of direction than a 45-degree bend. Therefore, it works well for smaller offsets and gradual alignment changes.

Can I use two elbows to create an offset?

Yes. Two compatible 33-degree elbows with a suitable straight pipe between them can create an offset. However, the pipe length will determine the final sideways movement and rise.

Does this elbow include a sweeping door?

No. Model 67-150-032 does not include an access door. Therefore, provide suitable inspection and sweeping access elsewhere in the flue system.

Can I use it with a wood-burning stove?

Yes, it suits compatible solid-fuel appliances, including many wood-burning and multifuel stoves. However, the appliance must require a 150mm flue connection.

Can the elbow pass through a wall or ceiling?

No. This is a single-wall connecting component. It must not pass through walls, ceilings, floors, roofs or concealed spaces. Use a suitable insulated chimney system for building penetrations.

How far must it remain from combustible materials?

The declared minimum clearance is 450mm. However, follow a greater distance if the appliance or another system component requires one.

Does it need fire clay?

No. VIT-Smooth uses friction-fit joints, so fire clay is not normally required. However, follow the appliance and flue-system instructions regarding approved sealants or jointing compounds.

Which way up should I install it?

Point the male or smaller-diameter end downwards towards the appliance. Then position the female end towards the chimney.

What does T600 mean?

T600 means the elbow has a nominal maximum continuous flue-gas temperature classification of 600°C.

What warranty does it include?

The manufacturer lists a 12-year warranty. However, its installation, use and maintenance conditions will apply.