What is a 315mm duct elbow used for?
It is used to change the direction of compatible 315mm round ventilation ductwork while maintaining the same nominal duct diameter.
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315mm Galvanised Steel 90° Elbow - Round Ventilation Ducting Bend
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1390
£13.90
Unit price perEstimated delivery between November 01 and November 03.
The 315mm Galvanised Steel 90° Elbow is a rigid round ventilation bend designed to change the direction of 315mm ducting through approximately 90 degrees while maintaining the full nominal duct diameter.
Also known as a 315mm duct bend, ventilation elbow or 90-degree duct elbow, this fitting provides a purpose-made solution when a large-diameter ventilation run needs to turn around walls, ceilings, equipment or other obstacles.
The curved, segmented construction creates a smoother transition than attempting to force flexible ducting through a tight bend. This helps maintain a more consistent internal airflow path while producing a stronger and more professional installation.
Manufactured from galvanised steel, the elbow is suitable for 315mm extraction and intake systems used in larger grow rooms, commercial horticulture, warehouses, workshops and other high-airflow ventilation applications.
Why choose a 315mm galvanised duct elbow?
- 315mm nominal diameter - designed for compatible 315mm round ventilation systems.
- 90-degree direction change - routes ductwork around corners and obstacles.
- Rigid curved construction - maintains a defined airflow path through the bend.
- Galvanised steel - strong and rigid for permanent and semi-permanent installations.
- Full-size connections - maintains the same 315mm nominal duct diameter at both ends.
- Suitable for extraction and intake - can be incorporated into exhaust-air or supply-air systems.
- Ideal for large ventilation systems - useful where high-capacity fans and large-diameter ducting are installed.
- Professional installation - creates a cleaner and more stable corner than sharply bending flexible ducting.
- Compatible with 315mm ventilation equipment - suitable for systems using matching ductwork, fans, filters and silencers.
What is a 315mm ducting elbow used for?
A ventilation elbow changes the direction of a duct run without changing its nominal diameter. This allows a 315mm ventilation system to be routed around structural features, equipment and other obstacles while retaining a purpose-made airflow path.
Typical applications include taking ducting from a horizontal to a vertical run, routing extraction around a corner, turning ductwork towards an external vent or positioning ducting correctly between a fan, filter, silencer and outlet.
Because both connections remain at a nominal 315mm diameter, no separate reducer is required when the adjoining system also uses compatible 315mm components.
A better alternative to crushing flexible duct around corners
Flexible ventilation ducting can be bent around corners, but excessively tight bends can compress or deform the duct. This reduces the effective internal area and can create additional resistance and turbulence.
A rigid 315mm elbow maintains a defined internal passage through the change of direction, making it particularly useful where the duct route requires a substantial turn.
The result is also a neater installation, with the adjoining duct sections able to approach and leave the bend in the intended direction.
315mm elbow for grow room ventilation
Larger indoor horticultural environments often require substantial airflow to remove excess heat and humidity and maintain effective air exchange.
Large 315mm ventilation systems may include extraction fans, carbon filters, silencers and extensive duct runs. A rigid elbow allows these components to be connected even where the available space prevents the ductwork from continuing in a straight line.
This makes the fitting useful in grow rooms, propagation facilities, indoor horticultural spaces and other environments where high-capacity ventilation equipment needs to be installed efficiently.
Installing a 315mm ventilation elbow
Plan the duct route before installation and position the elbow where the system needs to change direction. Ensure there is sufficient space around the bend for the adjoining ductwork and any required clamps or supports.
Connect compatible 315mm ducting or ventilation components to each end. Flexible ducting can typically be secured using appropriately sized duct clamps or clips.
Where reducing air leakage is important, seal the joints using suitable HVAC foil tape or another appropriate ventilation-system sealing method.
Large-diameter ducting should be properly supported so that its weight is not transferred unnecessarily to the elbow, fan, carbon filter or other connected equipment.
How bends affect ventilation performance
Every change of direction introduces some additional resistance into a ventilation system. A 90-degree elbow will therefore create more resistance than an equivalent length of straight duct.
When designing a high-airflow system, consider the complete duct route rather than fan capacity alone. Carbon filters, silencers, reducers, tees, long duct runs and multiple bends all contribute to total system resistance.
Keeping the number of bends to a practical minimum and avoiding unnecessary changes in direction can help maintain airflow through the system.
Compatible 315mm ventilation equipment
The 315mm elbow can form part of a complete round ventilation system using appropriately sized components such as:
- 315mm flexible ventilation ducting
- Compatible 315mm rigid round ducting
- 315mm inline extraction fans
- 315mm carbon filters
- 315mm acoustic silencers
- 315mm straight connectors
- 315mm tee pieces
- 315mm reducers and adapters
- Suitable duct clamps, clips and sealing materials
Nominal duct size does not always describe the exact male or female connection arrangement. Check the actual dimensions and fitting style of adjoining equipment before installation.
315mm Galvanised Steel Elbow product details
| Product | Round Ventilation Duct Elbow |
|---|---|
| Nominal diameter | 315mm |
| Nominal bend angle | 90° |
| Material | Galvanised steel |
| Shape | Round |
| Fitting type | Ventilation elbow / duct bend |
| Number of connections | 2 |
| Nominal diameter change | None - 315mm at both ends |
| Primary use | Changing the direction of 315mm round ventilation ducting |
| Airflow application | Extraction & intake ventilation systems |
| Suitable applications | Grow rooms, commercial horticulture, workshops, warehouses & general ventilation installations |
315mm Galvanised Steel Elbow FAQs
What angle is this ventilation elbow?
It is a nominal 90-degree elbow, designed for substantial direction changes within a ventilation duct run.
What is the elbow made from?
It is manufactured from galvanised steel, providing a strong and rigid fitting for ventilation installations.
Does the elbow reduce the duct diameter?
No. Both ends are designed around the same nominal 315mm duct size. A separate reducer is required where another diameter needs to be connected.
Can I connect flexible ducting to the elbow?
Yes. Compatible 315mm flexible ventilation ducting can be connected and secured using appropriately sized clamps or clips.
Can the elbow be used with rigid ducting?
Yes, provided the adjoining rigid duct components use compatible connection dimensions and fitting arrangements.
Can this 315mm elbow be used for extraction?
Yes. It is suitable for use within compatible 315mm extraction and exhaust-air systems.
Can it be used for intake ventilation?
Yes. The elbow can also be incorporated into compatible intake and supply-air ventilation systems.
Is a rigid elbow better than sharply bending flexible ducting?
A rigid elbow maintains a defined airflow path and avoids the crushing and deformation that can occur when flexible duct is forced around a tight corner.
Does a 90-degree elbow reduce airflow?
Any substantial change in airflow direction introduces additional system resistance. The actual effect depends on the fan, duct layout and other components in the installation.
Should I avoid using too many elbows?
Where practical, yes. Keeping duct routes relatively direct and minimising unnecessary bends can help reduce resistance within the ventilation system.
Should the connections be sealed?
Where minimising air leakage is important, secure the connections correctly and seal them using suitable HVAC foil tape or another appropriate ventilation sealing method.
Can this elbow be used with a 315mm carbon filter?
Yes. It can form part of a ventilation system containing a compatible 315mm carbon filter, fan or silencer.
Is a 315mm elbow suitable for grow room ventilation?
Yes. It is particularly useful in larger grow room and horticultural ventilation systems where high-capacity 315mm ductwork needs to change direction.
Do I need to support the ductwork around the elbow?
Yes. Large-diameter ductwork should be adequately supported so that excessive weight is not placed on the elbow or adjoining ventilation equipment.
315mm Galvanised Steel 90° Elbow - Round Ventilation Ducting Bend
Please sign in to see pricing
1390
£13.90
Unit price perThe 315mm Galvanised Steel 90° Elbow is a rigid round ventilation bend designed to change the direction of 315mm ducting through approximately 90 degrees while maintaining the full nominal duct diameter.
Also known as a 315mm duct bend, ventilation elbow or 90-degree duct elbow, this fitting provides a purpose-made solution when a large-diameter ventilation run needs to turn around walls, ceilings, equipment or other obstacles.
The curved, segmented construction creates a smoother transition than attempting to force flexible ducting through a tight bend. This helps maintain a more consistent internal airflow path while producing a stronger and more professional installation.
Manufactured from galvanised steel, the elbow is suitable for 315mm extraction and intake systems used in larger grow rooms, commercial horticulture, warehouses, workshops and other high-airflow ventilation applications.
Why choose a 315mm galvanised duct elbow?
- 315mm nominal diameter - designed for compatible 315mm round ventilation systems.
- 90-degree direction change - routes ductwork around corners and obstacles.
- Rigid curved construction - maintains a defined airflow path through the bend.
- Galvanised steel - strong and rigid for permanent and semi-permanent installations.
- Full-size connections - maintains the same 315mm nominal duct diameter at both ends.
- Suitable for extraction and intake - can be incorporated into exhaust-air or supply-air systems.
- Ideal for large ventilation systems - useful where high-capacity fans and large-diameter ducting are installed.
- Professional installation - creates a cleaner and more stable corner than sharply bending flexible ducting.
- Compatible with 315mm ventilation equipment - suitable for systems using matching ductwork, fans, filters and silencers.
What is a 315mm ducting elbow used for?
A ventilation elbow changes the direction of a duct run without changing its nominal diameter. This allows a 315mm ventilation system to be routed around structural features, equipment and other obstacles while retaining a purpose-made airflow path.
Typical applications include taking ducting from a horizontal to a vertical run, routing extraction around a corner, turning ductwork towards an external vent or positioning ducting correctly between a fan, filter, silencer and outlet.
Because both connections remain at a nominal 315mm diameter, no separate reducer is required when the adjoining system also uses compatible 315mm components.
A better alternative to crushing flexible duct around corners
Flexible ventilation ducting can be bent around corners, but excessively tight bends can compress or deform the duct. This reduces the effective internal area and can create additional resistance and turbulence.
A rigid 315mm elbow maintains a defined internal passage through the change of direction, making it particularly useful where the duct route requires a substantial turn.
The result is also a neater installation, with the adjoining duct sections able to approach and leave the bend in the intended direction.
315mm elbow for grow room ventilation
Larger indoor horticultural environments often require substantial airflow to remove excess heat and humidity and maintain effective air exchange.
Large 315mm ventilation systems may include extraction fans, carbon filters, silencers and extensive duct runs. A rigid elbow allows these components to be connected even where the available space prevents the ductwork from continuing in a straight line.
This makes the fitting useful in grow rooms, propagation facilities, indoor horticultural spaces and other environments where high-capacity ventilation equipment needs to be installed efficiently.
Installing a 315mm ventilation elbow
Plan the duct route before installation and position the elbow where the system needs to change direction. Ensure there is sufficient space around the bend for the adjoining ductwork and any required clamps or supports.
Connect compatible 315mm ducting or ventilation components to each end. Flexible ducting can typically be secured using appropriately sized duct clamps or clips.
Where reducing air leakage is important, seal the joints using suitable HVAC foil tape or another appropriate ventilation-system sealing method.
Large-diameter ducting should be properly supported so that its weight is not transferred unnecessarily to the elbow, fan, carbon filter or other connected equipment.
How bends affect ventilation performance
Every change of direction introduces some additional resistance into a ventilation system. A 90-degree elbow will therefore create more resistance than an equivalent length of straight duct.
When designing a high-airflow system, consider the complete duct route rather than fan capacity alone. Carbon filters, silencers, reducers, tees, long duct runs and multiple bends all contribute to total system resistance.
Keeping the number of bends to a practical minimum and avoiding unnecessary changes in direction can help maintain airflow through the system.
Compatible 315mm ventilation equipment
The 315mm elbow can form part of a complete round ventilation system using appropriately sized components such as:
- 315mm flexible ventilation ducting
- Compatible 315mm rigid round ducting
- 315mm inline extraction fans
- 315mm carbon filters
- 315mm acoustic silencers
- 315mm straight connectors
- 315mm tee pieces
- 315mm reducers and adapters
- Suitable duct clamps, clips and sealing materials
Nominal duct size does not always describe the exact male or female connection arrangement. Check the actual dimensions and fitting style of adjoining equipment before installation.
315mm Galvanised Steel Elbow product details
| Product | Round Ventilation Duct Elbow |
|---|---|
| Nominal diameter | 315mm |
| Nominal bend angle | 90° |
| Material | Galvanised steel |
| Shape | Round |
| Fitting type | Ventilation elbow / duct bend |
| Number of connections | 2 |
| Nominal diameter change | None - 315mm at both ends |
| Primary use | Changing the direction of 315mm round ventilation ducting |
| Airflow application | Extraction & intake ventilation systems |
| Suitable applications | Grow rooms, commercial horticulture, workshops, warehouses & general ventilation installations |
315mm Galvanised Steel Elbow FAQs
What is a 315mm duct elbow used for?
It is used to change the direction of compatible 315mm round ventilation ductwork while maintaining the same nominal duct diameter.
What angle is this ventilation elbow?
It is a nominal 90-degree elbow, designed for substantial direction changes within a ventilation duct run.
What is the elbow made from?
It is manufactured from galvanised steel, providing a strong and rigid fitting for ventilation installations.
Does the elbow reduce the duct diameter?
No. Both ends are designed around the same nominal 315mm duct size. A separate reducer is required where another diameter needs to be connected.
Can I connect flexible ducting to the elbow?
Yes. Compatible 315mm flexible ventilation ducting can be connected and secured using appropriately sized clamps or clips.
Can the elbow be used with rigid ducting?
Yes, provided the adjoining rigid duct components use compatible connection dimensions and fitting arrangements.
Can this 315mm elbow be used for extraction?
Yes. It is suitable for use within compatible 315mm extraction and exhaust-air systems.
Can it be used for intake ventilation?
Yes. The elbow can also be incorporated into compatible intake and supply-air ventilation systems.
Is a rigid elbow better than sharply bending flexible ducting?
A rigid elbow maintains a defined airflow path and avoids the crushing and deformation that can occur when flexible duct is forced around a tight corner.
Does a 90-degree elbow reduce airflow?
Any substantial change in airflow direction introduces additional system resistance. The actual effect depends on the fan, duct layout and other components in the installation.
Should I avoid using too many elbows?
Where practical, yes. Keeping duct routes relatively direct and minimising unnecessary bends can help reduce resistance within the ventilation system.
Should the connections be sealed?
Where minimising air leakage is important, secure the connections correctly and seal them using suitable HVAC foil tape or another appropriate ventilation sealing method.
Can this elbow be used with a 315mm carbon filter?
Yes. It can form part of a ventilation system containing a compatible 315mm carbon filter, fan or silencer.
Is a 315mm elbow suitable for grow room ventilation?
Yes. It is particularly useful in larger grow room and horticultural ventilation systems where high-capacity 315mm ductwork needs to change direction.
Do I need to support the ductwork around the elbow?
Yes. Large-diameter ductwork should be adequately supported so that excessive weight is not placed on the elbow or adjoining ventilation equipment.
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1390
£13.90
Unit price per