Ventilation
Ventilation Fans
Combined fan and silencer units for general, tunnel, and shaft ventilation.
Sizes available: 500mm – 1500mm
Ducting available to suit.
Super-Silenced Ventilation Fans
Designed for noise-sensitive projects, these fans are housed in a super-silenced enclosure to minimize sound levels.
Sizes available: 500mm – 1200mm
Ducting available to suit.
Jet Fans
Ideal for tunnels open at both ends, jet fans maintain consistent airflow without the need for ducting.
Sizes available: 500mm – 1500mm
H.P. Centrifugal Fans
Designed for small-diameter ducting, these high-pressure fans are ideal for pipejacking and similar applications.
Duct size: As small as 100mm
Sizes available: 100mm – 150mm
110V Portable Fans
Lightweight and durable, these rugged plastic-cased fans are ideal for site use. Fitted with a 16A plug for easy connection, they support 12" flexible ducting for general air movement.
Air Movers
Ideal for sites with a compressed air supply, these units create localized airflow without requiring electricity.
DVS 10 ‘Dry’ De-Duster
Using a sequence of dust filters, the DVS de-duster captures and removes dust from the airflow. Pulse jets clear the filters, with dust collected in a storage unit below.
- Up to 99% de-dusting efficiency
- Extracts up to 10m³/sec of air
‘Wet’ De-Dust Units
Using a spray system, the wet de-duster binds dust to water, effectively scrubbing the air of visible and respirable particles.
- Removes 99% of total dust
- Removes 94% of respirable dust
- Extracts 5.5m³/sec up to 20m³/sec of air
- Available in 11kW – 75kW units
Dry ‘W-Filter’ Box
A compact alternative to larger dry de-dusting units, this system uses coal board spec filter media to capture dust and reduce exposure levels.
Sizes available:
- Up to 15m³/sec (Ø800mm)
- Up to 30m³/sec (Ø1200mm) (airflow depends on fan)
Dry Dust Filter Box
A simple design, the unit is used in conjunction with a standard ventilation fan to extract localised dust from source, and collect it within the unit using the high grade filter elements.
This helps to keep dust at manageable levels within confined spaces.
- Extracts up to 10m³/sec (dependent on fan)
300mm Fan / Filter Box
A smaller filter box, designed to be manually handled and easily manoeuvrable. The compact unit contains both fan and high grade filter element to collect dust locally.
Ideal for smaller work sites where dust control is still critical.
- Extracts up to 1m³/sec
Duct Lowering System (DLS)
Designed for forced ventilation systems, the DLS allows ducting to be smoothly deployed as the cassette is winched down the shaft.
- 1000mm diameter duct
- Maximum depth: 70m
- Twin winches for added safety
- Can be mounted on a portable or ballasted support frame for use on concrete-jacketed or caisson-jacked shafts
Ventilation Design
We provide customised ventilation system designs to suit a wide range of tunnelling and confined space applications. Where required, designs can be supported by detailed calculations to demonstrate compliance with project specifications and safety standards. Our solutions ensure effective airflow management, taking into account factors such as duct sizing, fan selection, and site-specific constraints.
