BVNO 1000 - Blast valve

Blast Valve - BVNO 1000 is a normally open, double action valves which allow movement of the air in and out of the protected space and automatic action of closing the air opening with blast wave pressure, protecting the internal space both from positive and negative phase of the blast wave. The valves are designed for installation on the ventilation openings in the wall or as part of the air duct in civil defence shelters, bunkers, safe rooms, containers, industrial facilities and other applications. The BVNO 1000 valves are tested and certified for SI4570 standard. The valves are extremely durable and can withstand a wide range of temperatures and resistant to corrosion. The valves provide simple Installation on pre-installed wall sleeves, retrofit flanges, air duct or other options. The valves can be equipped with pre-filter for removing dust particles and come in different configurations for inline connection, special flanges or quick connectors and more.
 
Main Specifications:
Normally open, dual action, automatic
Maximum pressure durability: >2000 (20) kPa (bar)
Practical pressure durability: >900 (9) kPa (bar)
Nominal airflow: ~ 1000 m3/h
Pressure drop @ nominal: 200 Pa
Mechanical shock resistance: >12 g
Connection to wall: flange 8 Inch