Air exhausters - 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 GBL iris dampers are essential for smooth control of the duct air pressure. The lever and the iris regulating plates mechanism allow smooth adjustment of the diameter of the orifice(opening). The iristype closure allows throttling of the air flow without turbulence or induct noise. The GBL iris damper can be installed both in air supply and air exhaust ducts. Each Iris damper is provided with two manometer connections. The GBL can be opened to the full clear diameter for easier cleaning of the ductwork. The iris dampers, however, cannot be sealed shut (the maximum closing ratio is ca. 25% of the nominal clear diameter).

HRUWALL is a singleroom decentralized heat recovery unit for concealed installation. The unit comes with a ceramic heat exchanger which boasts a maximum heat recovery ratio of 90% (the nominal heat recovery ratio is η=74.3% as per EN 1314182011). The energyefficient EC fan changes the running direction every 70 seconds to alternate between air supply and air exhaust. Low energy consumption and extremely low operating noise make this heat recovery unit a recommended solution for nonstop operation. The heat recovery unit has three speed levels to choose from, depending on the size of the area and indoor demands. HRUWALL10025 provides a sufficient air change level in areas up to 19m2. HRUWALL15060 provides a sufficient air change level in areas up to 45m2. We recommend installing the devices in pairs.

The SLC and SRC rectangular duct silencers reduce the noise level in ventilation and A/C systems. This silencer type is usually installed between a fan and an air supply or exhaust duct, and upstream of air supply vents. All silencers are made of a housing and inner baffles. The housing is made from galvanized steel sheet and its ends are framed with steel sheet angles. All baffles inside the silencer have a round breast at one end and comprise a galvanized steel frame with a soundinsulating insert which absorbs the acoustic energy from the air flow. The soundinsulating insert is a set of nonflammable mineral wool panels. The outer surface of the soundinsulating insert is lined with a special abrasionresistant textile to protect the mineral wool from wear and tear. The mineral wool panels are finished with a glass fibre lining in black; this lining is suitable for systems with a maximum air flow rate of 20 m/s.

The FDABURML coupling module is a combination of an air valve and a fire damper, coupled with a single housing. This is an alternative to typeical fire valves. The main advantages of the FDABURML are better fire rating and a smaller size with more product configurations and application options. The main component of the coupling module is the CFDM fire damper. The fire damper is available in Ø 100, 125, 160, and 200 mm. The wing blade of the damper provides a very low resistance to the air flow. The fire damper can be ordered with one or two optional limit switches to feed back the actual blade position. The FDABURML coupling modules match the most popular versions of air supply or exhaust valves which can be replaced with one another, even with the coupling module installed in a partition or already in use. The entire coupling module is compact. As a result, the air valves with the mounting frames cannot exceed 50 mm in height.

Round fireplace/ventilation grilles Round fireplace grilles are designed for supplying warm air in a gravitational or forced way, as well as for supplying or exhausting ventilation air. They are made of steel elements properly prepared in the technological process. Fireplace grilles are installed in fireplace enclosures or in walls/ceilings as the end of hot air distribution or ventilation ducts

Round fireplace/ventilation grilles Round fireplace grilles are designed for supplying warm air in a gravitational or forced way, as well as for supplying or exhausting ventilation air. They are made of steel elements properly prepared in the technological process. Fireplace grilles are installed in fireplace enclosures or in walls/ceilings as the end of hot air distribution or ventilation ducts

Round fireplace/ventilation grilles Round fireplace grilles are designed for supplying warm air in a gravitational or forced way, as well as for supplying or exhausting ventilation air. They are made of steel elements properly prepared in the technological process. Fireplace grilles are installed in fireplace enclosures or in walls/ceilings as the end of hot air distribution or ventilation ducts

Round fireplace/ventilation grilles Round fireplace grilles are designed for supplying warm air in a gravitational or forced way, as well as for supplying or exhausting ventilation air. They are made of steel elements properly prepared in the technological process. Fireplace grilles are installed in fireplace enclosures or in walls/ceilings as the end of hot air distribution or ventilation ducts

Round fireplace/ventilation grilles Round fireplace grilles are designed for supplying warm air in a gravitational or forced way, as well as for supplying or exhausting ventilation air. They are made of steel elements properly prepared in the technological process. Fireplace grilles are installed in fireplace enclosures or in walls/ceilings as the end of hot air distribution or ventilation ducts

Round fireplace/ventilation grilles Round fireplace grilles are designed for supplying warm air in a gravitational or forced way, as well as for supplying or exhausting ventilation air. They are made of steel elements properly prepared in the technological process. Fireplace grilles are installed in fireplace enclosures or in walls/ceilings as the end of hot air distribution or ventilation ducts

Round fireplace/ventilation grilles Round fireplace grilles are designed for supplying warm air in a gravitational or forced way, as well as for supplying or exhausting ventilation air. They are made of steel elements properly prepared in the technological process. Fireplace grilles are installed in fireplace enclosures or in walls/ceilings as the end of hot air distribution or ventilation ducts

Round fireplace/ventilation grilles Round fireplace grilles are designed for supplying warm air in a gravitational or forced way, as well as for supplying or exhausting ventilation air. They are made of steel elements properly prepared in the technological process. Fireplace grilles are installed in fireplace enclosures or in walls/ceilings as the end of hot air distribution or ventilation ducts

Round fireplace/ventilation grilles Round fireplace grilles are designed for supplying warm air in a gravitational or forced way, as well as for supplying or exhausting ventilation air. They are made of steel elements properly prepared in the technological process. Fireplace grilles are installed in fireplace enclosures or in walls/ceilings as the end of hot air distribution or ventilation ducts

Round fireplace/ventilation grilles Round fireplace grilles are designed for supplying warm air in a gravitational or forced way, as well as for supplying or exhausting ventilation air. They are made of steel elements properly prepared in the technological process. Fireplace grilles are installed in fireplace enclosures or in walls/ceilings as the end of hot air distribution or ventilation ducts