BVNO air valve open in normal
BVNO automatic, normal valves are designed to be installed in ventilation openings to protect indoor areas from the effects of destructive blast waves. These valves are specially designed to provide ventilation while providing protection against unexpected overhead pressures. In normal condition, these valves are open, allowing continuous air flow, but in the event of an explosion automatically close to protect the interior.
Main characteristics:
-
A wide range of blast valves for different air currents. BVNO series contains valves with air flow between 50-2900 m ³/h (for one valve, multiple valves can be installed in case of increased air flow).
-
Rear pressure tolerance > 900 kPa (9 bar).
-
Very durable – withstand heat and corrosion.
-
Normally open blast valves can be equipped with a dust prefilter to remove dust particles and a special housing to direct air.
- Operating temperature -20 – +70 °C
- Mechanical strength not exceeding 12 g
Areas of use:
Perfect for civil defence shelters, military facilities, emergency options and critical infrastructure
Packaging and colour |
BVNO 1000 8L ,BVNO 1800 8L ,BVNO 2600 8L ,BVNO 2900 14L ,BVNO 50 4L ,BVNO 550 8L ,BVNO 600 8L |
---|


Receipt from Output point
The receipt of goods from the store is free of charge. We are expected to complete the order within 1-5 days, except for products on order.
The delivery of goods shall be made to the Contracting Authority or to a person authorised by the Contracting Authority. Additional information on the phone +37258212121 or shop@flameguard.ee.
Delivery of parcel trucks
The ability and charge to send a parcel machine depends on the conditions of the parcel machine service provider.
If the purchased product cannot be transported through the parcel machine network, Flameguard may change the service provider and in this case the transport price may also change.
Delivery by courier
The ability and reward to send by courier depends on the terms and conditions of the service provider. In general, we work with all express delivery companies and, if the purchased product cannot be transported through a specific express delivery service, Flameguard may change the express delivery service provider and in this case the transport price may also change.
Time-critical or time-sensitive transport
The possibility of time-critical or time-sensitive transportation depends on the location of the delivery and the exact terms and conditions of the service must be agreed in advance.
You can check the availability of the service on your phone +37258212121 or shop@flameguard.ee
Select delivery mode to subscribe to the service - Receipt from the dispatch point - Suur-Mämäe 31, Tallinn 11415
In addition, the cell in the contacts field must be filled in obligatorily Notes about order, to which the following must be added:
- Reference of the mode of delivery agreed with the flameguard;
- date and time of delivery;
- name and mobile phone number of the person receiving the goods.
OKAY! Without further information, the transport order will not be activated and the order will be stored at the delivery point of Suur-Mõjamäe 31, Tallinn
Seotud tooted
Modular bunk beds
Strong and space-saving bunk beds designed for rapid installation in emergency shelters and bunkers. Can be assembled in two or three levels, as appropriate.
Main characteristics:
-
Quickly and easily assemble and disassemble
-
Each level carries up to 150 kg
-
Durable metal pipe construction with high quality coating
-
Comfortable sleeping surfaces of fabric
-
Ideal for use in shelters, camps and emergency accommodation
Explosion-proof windows
Explosion-proof windows it's designed to withstand heavy pressure shocks and shock waves. Windows have been tested until 5 bars blast pressure and can be combined if desired ballistic protection.
Main characteristics:
-
Can withstand up to 5 bar of explosion pressure and shocks
-
Made of reinforced glass, aluminium profiles and steel frames
-
Compliance GSA level 1 explosion protection; and GSA TS01-2003 standard
-
Matches public buildings, maintaining visual aesthetics
Hinged shelter gate
Traditional opening mechanism wings or gate, designed for high security. Reinforced construction and improved locking systems make it the ideal choice in areas with high risk.
Main characteristics:
-
Multi-point locking system for maximum protection
-
Reinforced steel structure - resistant to intrusion and explosions
-
In gas-tight and bullet proof versions
-
Manually or automatically open as needed
Special-order shelter doors
Custom shelter doors, designed to meet specific security and operational requirements in shelters, government buildings and industrial facilities. These doors have been created maximum flexibility, enabling a variety of customization options tailored to the unique needs of each project.
Main characteristics:
-
Custom measures and specifications according to project requirements
-
Manual or electrical opening, depending on the installation environment
-
Advanced locking mechanisms for better security
-
Special designs emergency rooms and safe rooms
Tube-shaped shelter
Main characteristics:
-
Operating height: 3 metres – guarantees freedom of movement and comfort within the interior.
-
Length of living module: 6 to 15 metres, providing accommodation for several people.
-
The structure includes space for connections and technical systems.
-
Can be installed as a ground or underground solution.
-
Equipped certified gas and water tight doors and explosion-proof hatches, which provide insulation against external hazards.
-
Contains Arconik ventilation and filtration system, that protects nuclear, biological and chemical (CBRN) hazards from the front.
HDB anti-shock grate
Main characteristics:
-
Tested in shock tube until 6 bar pressure.
-
Resistance to corrosion (1,440 hours in salt spray test).
-
Self-activated closing and opening mechanism.
-
Available on a custom scale up to 2000 × 2400 mm.
-
Certified for use in hazardous environments.
PRV pressure difference control valves
Main characteristics:
-
Professional solution for air locks and protected spaces.
-
Compact design – easy to integrate into existing ventilation systems.
-
Corrosion resistant materials provide a long life span.
Shock wave overpressure valve BVNO
Main characteristics:
-
Keeps excess pressure under control by automatically releasing excess air.
-
Running from pressure 50 Pa.
-
Available in different sizes according to the need for air flow.

Join our newsletter!
We send sector-specific information about the services and e-store by e-mail at 1 monthly frequency.