VA 40 ventilation system

Reliable Air Supply in Shelters

The VA 40 ventilation system is designed for continuous operation in shelters and ensures a constant supply of breathable air for occupants. At the same time, the system reliably removes used air and continuously reduces CO₂ levels within the space.

Under normal conditions, the system operates with fresh air intake. In emergency situations, it can be quickly and easily switched to gas filter mode. This is achieved by disconnecting the flexible hoses, enabling filtered air supply in the event of chemical, biological, or other hazardous contamination.

Standards, Certification, and Type Approval

All VA-40 ventilation systems supplied by BSSD are manufactured in accordance with the regulations of the Federal Office for Civil Protection (BABS) and are type-tested by the Spiez Laboratory of the Swiss Federal Department of Defence (VBS).

Approvals (depending on manufacturer): BZS T 87-003, BZS TE 98-005

Approval depends on the specific configuration and manufacturer. BSSD ensures that only tested and approved systems are used.

Design, Integration, and System Compatibility

The VA-40 ventilation system is designed as a compact standalone unit and can be flexibly mounted on the shelter wall or integrated into a technical room. Multiple units can be grouped if required.

The system connects to a shared air intake equipped with blast protection valves and an integrated air filter. Installation dimensions are standardized across the VA series, significantly simplifying planning, replacement, and retrofitting.

Differences between configurations—depending on the manufacturer—primarily relate to:

• Pre-filters

• Airflow measuring tube

• Gas filter configuration

Standard Equipment and Emergency Operation

Each VA-40 ventilation unit is designed for both electric operation and full manual emergency use and includes the following components:

• Ventilation unit with electric motor

• Reduction gearbox

• Dynamo with sealed 5-watt emergency lamp

• On/off switch

• Attachable hand crank for manual operation

• Airflow measuring tube with throttle valve

• Hose pair with coupling and four clamps

• Operating manual with protective cover

In the event of a power failure, the system can be operated manually. The integrated emergency lighting is powered by the dynamo, ensuring safe operation under failure conditions.

Optional equipment (depending on manufacturer):

• Electric air heater

• Non-return valve

• Non-return valve

• Mounting anchors

• Alternative voltage and frequency configurations

Capacity and Applications

The VA-40 ventilation system is designed for shelters with up to 13 protected occupants and is suitable for:

• Private shelters

• Residential buildings

• Small public shelters

• Supplementary systems in modular shelter concepts

Thanks to manufacturer-neutral sourcing, the system can be optimally adapted to project size, usage, and structural conditions.

Planning Guidelines and Minimum Requirements

• Floor area per occupant: ≥ 1 m²

• Floor area per VA unit: ≥ 1 m²

• Room volume per occupant: ≥ 2.5 m³

• Minimum shelter size: ≥ 8 m²

• Minimum shelter width: 2.0 m

• Minimum shelter height: 2.0 m

• Maximum occupants per shelter compartment: ≤ 50

 

Additional planning must also consider furnishing and protective equipment such as blast doors, protective covers, or dry toilets.

 

We are happy to advise you on selecting the appropriate ventilation system as well as on special requirements and accessory solutions.