Air flow regulators - Import export

The RACAV constant air velocity regulator keeps the air output steady in ventilation systems. The device works without any electric power supply and from the minimum pressure differential shown in Chart 1 to the maximum pressure differential of 1000 Pa. The air velocity stability may be reduced outside the range shown in the differential pressure chart. The regulator can be used in comfort or industrial air supply and air exhaust systems.

The RAVAV regulator is dedicated for forced ventilation systems and is an important component for installations with variable air flow. The regulator casing is made of Z 275 galvanized sheet. Optionally, it is possible to use the 1.4301 stainless steel to build the casing. Casing sides with factoryinstalled EPDM rubber gaskets ensure tight connection to ventilation ducts. Inside the casing, the adjusting damper is also insulated (depending on the control mechanism). The servomotor is installed on the control unit casing so as to allow for thermal insulation of the system. The regulator is also available in the version with preinstalled 50 mm insulation and a galvanised steel shield. The measuring system based on aluminum impact pressure tubes and pressure relieve stub pipes ensures reliable measuring of the air flow. Sensor, control unit and servomotor are integrated in one device.

The DSQWA rectangular multiblade aluminium dampers can be used to control and isolate air flow in rectangular ductwork. The dampers can be installed in ventilation ducts, as wallmounted air flow regulators, or AHU air flow regulating and shutoff units. All dampers have a housing made of 4 aluminium profiles and a closure consisting of aluminium blades. The blade height is the same for all product sizes. The blades are fitted with gaskets to provide air tightness class 2 as per EN 17512003. The DSQWA damper can have a handoperated damper mechanism QDMPSAL, an externallymounted actuator, or an actuator mounting. The damper mechanism is installed on the outer surface of the housing. The damper blade rotation mechanism features short and long shafts rotating by intermeshed gears installed on bearings. The gears are installed on the outer surface of the housing.