The ACIN spring overloaded overpressure controller is a device to maintain an (adjustable) constant pressure difference between two rooms in an overpressure controlled area or between one room and outdoors.
The controller is designed for wall mounting, preferably with the valve axle in horizontal position and is suitable and approved for application on (Navy) ships. G-versions will withstand shock values of 2500m/s2.
All versions consist of an aluminium housing with stainless steel grille, containing a flat valve, a neoprene valve seal, a spring and an adjustment system. Due to the spring characteristics, the maintained pressure is depending on the air quantity (bandwidth).