Product Description

150mm Equal Tee with Cap – Vitreous Enamel

Model: 67-150-035

Connect a compatible rear-outlet stove to a vertical flue route with the VIT-Smooth 150mm Equal Tee with Cap. This 90-degree tee includes a removable cap at the base, which provides practical access for inspection and chimney sweeping.

The horizontal branch connects to the rear appliance outlet or another compatible component. Meanwhile, the upper connection continues the flue vertically towards a suitable chimney, flexible liner or twin-wall system.

Furthermore, the smooth matt-black vitreous enamel finish complements both modern and traditional stoves. The tee forms part of the VIT-Smooth 150mm single-wall connecting flue range.

Product at a Glance

• Product type: 90-degree equal tee with removable cap
• Nominal diameter: 150mm (6 inches)
• Suitable for many compatible rear-outlet installations
• Removable lower cap for sweeping and inspection
• Material: 1.2mm zero-carbon steel
• Coating: internal and external vitreous enamel
• Approximate total finished thickness: 1.4mm
• Finish: smooth matt black
• Joint type: friction fit
• Temperature classification: T600
• Minimum distance from combustible materials: 450mm
• Model: 67-150-035
• EAN: 5060795860536
• Warranty: 12 years

Key Features

• Creates a 90-degree connection into a vertical flue route
• Useful for compatible rear-outlet stoves
• Includes a removable tee cap
• Provides direct access for sweeping and inspection
• 150mm nominal internal diameter
• Strong 1.2mm zero-carbon steel construction
• Internal and external vitreous enamel coating
• Smooth matt-black finish
• Friction-fit connection system
• Suitable for compatible gas, oil and solid-fuel appliances
• T600 temperature classification
• G450 clearance classification

What Is an Equal Tee with Cap?

An equal tee has three connections of the same nominal diameter. On this model, each connection suits compatible 150mm VIT-Smooth components.

The horizontal branch normally connects to the rear outlet of a suitable stove. The upper connection then carries combustion gases into the vertical part of the flue system.

Finally, the lower branch holds the removable cap. This cap provides access to the base of the tee, where soot and other combustion deposits may collect.

Designed for Rear-Outlet Stove Connections

Many stoves provide both top and rear flue-outlet options. When the installer uses the rear outlet, the flue must usually turn upwards towards the chimney.

This equal tee creates that change in direction while also providing cleaning access below the horizontal connection. Therefore, it often offers a more practical solution than a standard 90-degree elbow.

However, always check the appliance instructions before ordering. The stove manufacturer must permit the proposed rear connection and specify a 150mm flue diameter.

Why Is the Removable Cap Important?

A change in flue direction can collect soot, ash and other combustion deposits. In addition, a 90-degree connection may make sweeping more difficult if the system has no access point.

The removable lower cap provides direct access for:

• Routine chimney sweeping
• Inspection of the tee and adjoining pipework
• Removal of soot and loose debris
• Checking for tar or condensate deposits
• Examining the internal enamel finish

Position the cap where a chimney sweep can reach it safely. Also, leave enough space below the tee to remove and refit the cap.

Only remove the cap when the appliance and complete flue system have cooled fully. Before using the stove again, refit the cap correctly and check that it sits securely.

Equal Tee vs 90 Degree Elbow

Feature	Equal Tee with Cap	90 Degree Elbow
Change of direction	90 degrees	90 degrees
Built-in sweeping access	Yes, through the removable cap	No, unless using a doored model
Common application	Rear stove outlet into a vertical flue	Compact change of direction
Space needed below	Yes, for cap removal	Usually less
Debris collection point	Accessible through the lower cap	No separate collection area

An equal tee can provide better maintenance access for many rear-outlet installations. However, it needs enough space below the fitting for safe cap removal. Therefore, check the available space before choosing between a tee and an elbow.

Why Choose VIT-Smooth?

VIT-Smooth offers a high-quality alternative to basic welded black stove pipe. The manufacturer carefully finishes the welded areas before applying the enamel. Consequently, the finished component has smooth joints and a clean appearance.

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

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

VIT-Smooth 150mm Equal Tee Specification

• Download the VIT-Smooth brochure
• Product type: 90-degree equal tee with cap
• Model and SKU: 67-150-035
• EAN: 5060795860536
• Nominal internal diameter: 150mm (6 inches)
• Branch angle: 90 degrees
• Lower cap: included
• Sweeping access: through removable lower cap
• 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
• Standard: EN 1856-2
• Full classification: EN 1856-2 T600 N1 Vm L80120 G450
• Declared minimum distance from combustible materials: 450mm
• Manufacturer: Mi-Flues
• Range: VIT-Smooth
• Warranty: 12 years

Suitable Appliances and Flue Systems

You can use this tee 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 diameter, permitted outlet position and flue-system specification.

This tee can form part of a connection 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 tee forms part of a visible single-wall connecting flue. It creates a 90-degree connection between a compatible rear appliance outlet and the vertical flue route.

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.

Planning the Installation

First, confirm that the appliance manufacturer permits a rear flue connection. Next, measure the position of the stove outlet and the vertical chimney route.

Also, check that the installation leaves enough room below the tee to remove the cap. The cap must remain accessible after the stove and surrounding fireplace components are in place.

Finally, allow for every joint overlap and any adaptors or connecting sections. The installer must also consider chimney draught, flue support and access for future maintenance.

Correct Installation Direction

Install the tee so the vertical flue continues upwards towards the chimney. Connect the horizontal branch to the compatible rear appliance outlet or adjoining fitting.

The smaller male ends should point downwards towards the appliance where applicable. This orientation helps keep condensates and combustion deposits inside the flue system.

Push each connection together fully. In addition, support the vertical pipework so it does not place excessive weight or sideways pressure on the tee or stove outlet.

Jointing and Sealing

VIT-Smooth uses a friction-fit connection system. Therefore, connections 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 suitable fire cement or high-temperature silicone approved for the application.

Do not use ordinary household silicone because it may not withstand flue temperatures. Also, do not rely on jointing compound to correct a loose, damaged or incompatible connection.

Using the Sweeping Cap

Allow the appliance and flue to cool completely before removing the lower cap. Next, protect the area below the tee from falling soot and debris.

Remove the cap carefully and use suitable sweeping or inspection equipment. Once the work is complete, clean the mating surfaces and refit the cap securely.

Before lighting the appliance again, check that:

• The cap sits in its correct position
• The connection feels secure
• No soot or debris blocks the joint
• The cap or enamel shows no damage
• The remaining flue joints remain firm

Replace the cap or complete tee if damage prevents a safe and secure closure.

Can You Cut the Tee?

Avoid cutting the shaped body or connection ends of the tee. Cutting may chip the enamel, expose the steel or prevent the fitting from forming a secure joint.

Instead, use compatible straight or adjustable pipe sections to achieve the required position. This approach keeps the factory enamel and joint 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 forms a safe connection.

Clearance from Combustible Materials

Maintain at least 450mm between this 150mm single-wall flue component and combustible materials. This clearance matches the product’s G450 classification.

Combustible materials may include:

• Timber frames and beams
• Wooden shelves and mantels
• Furniture and curtains
• Decorative wall coverings
• Materials hidden behind plasterboard

Plasterboard does not automatically make a wall non-combustible. For example, it may cover timber studs. Therefore, check the complete wall construction before confirming the clearance.

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

Installation Safety

Before installation, confirm that the 150mm diameter matches the appliance and every adjoining component. Also, make sure the complete arrangement follows the stove and flue-system instructions.

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

Always wear suitable gloves and eye protection when handling or installing metal flue components.

Inspection and Maintenance

Check the tee, cap and adjoining joints regularly. Look for movement, damaged enamel, staining, corrosion, distortion or signs of escaping combustion products.

In addition, arrange chimney sweeping at intervals that suit the appliance, fuel and frequency of use. Solid-fuel installations may need more frequent cleaning because soot and tar can collect inside the flue.

Only clean the external enamel after the tee 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 tee or cap if either part becomes badly damaged, corroded, distorted 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 checking whether this equal tee suits your stove and flue route? Call the SNH Tradecentre team on 01843 842727 before ordering.

You can also read SNH Tradecentre customer reviews on Google.

Frequently Asked Questions

What is a 150mm equal tee used for?

It commonly connects a compatible rear-outlet stove to a vertical flue route. The three openings share the same nominal 150mm diameter.

Does the tee include the lower cap?

Yes. The removable lower tee cap comes with the fitting.

What does the removable cap do?

The cap provides access to the base of the tee for inspection, chimney sweeping and the removal of soot or debris.

How much room should I leave below the cap?

Leave enough room to remove and refit the cap safely. Check the complete product dimensions and discuss the required working space with the installer.

Can I remove the cap while the stove is running?

No. Allow the stove and complete flue system to cool fully before removing the cap. Refit it securely before using the appliance again.

What diameter is the tee?

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

Can I use it with a wood-burning stove?

Yes, it suits many compatible wood-burning and multifuel stoves. However, the appliance must require a 150mm flue connection and permit the proposed rear-outlet arrangement.

Can the tee 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 product’s G450 classification declares a minimum clearance of 450mm. However, follow a greater distance if the appliance or another 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 jointing compounds.

What does T600 mean?

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

What warranty does it include?

SNH Tradecentre lists a 12-year warranty. The manufacturer’s installation, use and maintenance conditions will apply.