Product Description

* The ideal units for regulating and measuring the air flow rates within circular air ducts. * Their casing and the adjustment blades are manufactured from galvanized sheet metals. * The duct connection spigots and the cam-slot for adjustment are equipped special leak-proof seals. * There are two pressure measuring stations from which the differential pressure measurements can be made. * The IRS units are produced as equipped with a hand locking quadrant. * The actuators may be on-off (*4V or **0V) or modulating type in accordance with the customers' demands. * All iris dampers are tested prior to dispatching.