Drain valve for supply air duct
Valve for draining the supply air duct.
Shut-off valves (water and sewage)
Valve for shutting off sewage and water.
Overpressure valve, Fixed overpressure valve (single valve)
A pressure relief valve is used to protect against air shock waves through exhaust air ducts. It must open for the release of exhaust air when there is a certain excess pressure in the shelter in relation to the outside. If the overpressure disappears or the overpressure valve is affected by an air shock wave coming from outside, the valve must close. It must be able to be locked in the closed position from the inside of the shelter. In principle, the overpressure valve can be designed as a movable, balanced, and self-closing valve device that is mounted in the boundary wall of the shelter.
Shock wave valve
A shock wave valve is used in a shelter’s ventilation system as protection against incoming air shock waves. It must be designed as a quick-closing device for installation in the supply air duct. The valve must be open during ventilation and must close the supply airflow within a few milliseconds when subjected to an air shock wave. Leaking pulse when closing the valve must not damage the ventilation system or people in the shelter.