Air Flow Regulators

Air Flow Regulators

We offer a range of devices to control ventilation air flow underground.

Our solutions include automatic airflow regulators, secondary air control and plastic regulator drop boards.  


Custom made

One person operation

Simple to use, easy to install

Blastflow® Regulators

In 2005 Minova developed a revolutionary new automatic airflow regulator for metalliferous mines. Blastflow® regulators have been designed to enable simple retrofitting to existing regulator sites by simply lifting and locking the modules into place. Regulator modules can be pre-set to any position from fully open to fully closed by one person using a wheel adjustment mechanism.

The louvre blades automatically open during stope firings releasing large volumes of air, with a constant forces gas strut controlling the opening of the louvre blades. Once the air pressure has dissipated the louvre blades adjust to their original airflow setting.

Secondary fans can be combined with automated Blastflow regulators to allow the mine to control where and when air is placed. Ventilation on Demand (VOD) allows an underground mine's ventilation circuit to be electronically controlled delivering airflow efficiency, reduced electricity and rapid access to production areas. 

Blastflow has been live tested in a working underground metalliferous mine through a series of stope firings of increasing size cumulated in a 380kT blast. High speed cameras recorded the operation of the Blastflow modules during blasting. Download the Technical Data Sheet

QBC - Easy Access Device

QBC's are used to control air flow at stope accesses and draw points, ore passes and the general direction of ventilation throughout mine areas. Our QBC is a ventilation blind that allows for the stopping of air flow to and from underground mine areas that may require complete access at a later stage. Designed for arduous conditions with high tear resistant FRAS cloth and fiberglass dowels that bend and do not permanently deform.

Designed to suit specific size openings, can be relocated for re-use and numbered for location identification purposes. Download the QBC Technical Data Sheet

Plastic Regulator Drop Boards

Environmentally friendly, recycled plastic drop-boards are suitable for controlling air quantities in an underground mine circuit. Plastic drop-boards are light-weight, easily removed and replaced, do not swell or splinter and do not break as often as timber boards do. Plastic regulator boards are available in  grey and can be incorporated as an addition to Blastflow regulator frames. Download our Ventilation Brochure


Industry Sectors

Coal Mining

Hard Rock Mining

Common Uses

Ventilation Control

Regulate Airflow


Blastflow TDS

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More than 130 Years of

Industry Experience and Knowledge