Fans & Dampers

Fans and dampers help control airflow and ventilation inside backflow enclosures. During high temperatures, an exhaust fan can remove excess heat, while a damper allows fresh air to enter, protecting backflow preventer assemblies and other equipment across their entire operating range.

A backdraft damper provides a controlled path for fresh air to enter an enclosure while helping prevent reverse flow when the ventilation system is not operating. Gravity dampers, as the name implies, use air flow and gravity to open and close their blades.

An exhaust fan removes hot air from the enclosure while a backdraft damper allows fresh air to enter. This creates controlled air flow through the enclosure, managing heat and improving ventilation around a backflow preventer, control valve, pump or other enclosed equipment.

Gravity dampers, including backdraft dampers, are commonly used for enclosure ventilation. The damper blades open in response to airflow and close when air flow stops, controlling air direction and limiting unwanted outside exposure.

Yes, ventilation components can be incorporated into enclosure designs based on your equipment requirements, air flow needs, and enclosure dimensions. Custom sizes and configurations accommodate different backflow preventer assemblies on their installation sites, as well as glycol pumps, quench tanks, fire water tanks and other critical equipment that needs security, protection from the elements and proper air flow.

Consider the required air flow, air direction, pressure, enclosure size, environmental conditions, materials, and easy access for installation and maintenance requirements. Damper construction should also provide the durability and corrosion resistance needed for the enclosure's operating environment.

Backdraft dampers typically use gravity or airflow to control one-direction airflow and prevent reverse flow. Opposed blade dampers use adjacent blades that rotate in opposing directions to regulate air flow and are more commonly associated with safety measures on HVAC systems and controlled air distribution.