Damper - Import export

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).

The FDA12 round fire dampers are designed for use in general ventilation systems to seal off smoke and fire between adjacent fire partitions. The fire dampers are classified according to EN 135013+A12010P (Fire classification f construction products and building elements). The fire resistance was tested as per PNEN 136622001P (Fire resistance tests for service installations Part 2 Fire dampers). The entire manufacturing process meets the requirements of EN 156502010. The FDA12 fire dampers can be installed in horizontal and vertical fire partitions to provide fire resistance of EI 120 (ve ho i↔o) S (which may depend on the actual fire resistance of the partition). The fire dampers are available in the nominal diameter sizes DN100, DN125, DN160, DN200, DN250, and DN315. All fire dampers have a pull spring control gear and a fusible thermal trip (in FDA12T) or a returnspring actuator coupled with a thermal trip (in FDA12M).

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.

The DAOS dampers feature a split flap closure and allow the air flow to pass in one direction only. The aluminium closure flaps are pressed against a foam seal when closed to reduce the operating noise in the ductwork. The split flap closure is held closed with a spring gear, which makes it also possible to use the damper in vertical installations. A version intended for a fullmale insertion into the ductwork ends is available on special request.

The DATL/DAT dampers are designed for cladding with up to 50 mm thick insulation. The DATL/DAT dampers are a good choice when the ductwork closure must be airtight. The damper closure position can be read on the 0° to 90° dial of the control handle. The damper closure opening ratio can be fixed with a screw. DAT — airtight shutoff damper DATL — airtight shutoff damper with gaskets at flanged ends All DATL/DAT dampers of diameter 355 mm or greater have the damper closure pivot provided with extra bracing. All DATL/DAT dampers of diameter 450 mm or greater are supplied with the KITDSH damper mechanism control lever. Standard dampers are made from galvanized steel sheet.

The FDA12 round fire dampers are designed for use in general ventilation systems to seal off smoke and fire between adjacent fire partitions. The fire dampers are classified according to EN 135013+A12010P (Fire classification f construction products and building elements). The fire resistance was tested as per PNEN 136622001P (Fire resistance tests for service installations Part 2 Fire dampers). The entire manufacturing process meets the requirements of EN 156502010. The FDA12 fire dampers can be installed in horizontal and vertical fire partitions to provide fire resistance of EI 120 (ve ho i↔o) S (which may depend on the actual fire resistance of the partition). The fire dampers are available in the nominal diameter sizes DN100, DN125, DN160, DN200, DN250, and DN315. All fire dampers have a pull spring control gear and a fusible thermal trip (in FDA12T) or a returnspring actuator coupled with a thermal trip (in FDA12M).

The FDA212 square fire dampers are designed for use in general ventilation systems to seal off smoke and fire between adjacent fire partitions. The fire dampers are classified according to EN 135013+A12010P (Fire classification of construction products and building elements). The fire resistance was tested as per PNEN 1366 22015 (Fire resistance tests for service installations — Part 2 Fire dampers). The entire manufacturing process meets the requirements of EN 156502010. The FDA212 fire dampers can be installed in horizontal and vertical fire partitions to provide fire resistance of EI 120 (ve ho i↔o) S (which may depend on the actual fire resistance of the partition). The fire dampers are available in the nominal sizes 160x160 – 1000x500 mm. All fire dampers have a torsion spring trip (in FDA212T) or a returnspring actuator coupled with a thermal trip (in FDA212M).

The FDA212 round fire dampers are designed for use in general ventilation systems to seal off smoke and fire between adjacent fire partitions. The fire dampers are classified according to EN 135013+A12010P (Fire classification of construction products and building elements). The fire resistance was tested as per PNEN 1366 22015 (Fire resistance tests for service installations — Part 2 Fire dampers). The entire manufacturing process meets the requirements of EN 156502010. The FDA212 fire dampers can be installed in horizontal and vertical fire partitions to provide fire resistance of EI 120 (ve ho i↔o) S (which may depend on the actual fire resistance of the partition). The fire dampers are available in the nominal diameter sizes DN200, DN224, DN250, DN280, DN300, DN315, DN355, DN400, DN450, DN500, DN560, DN600, DN630.

The FDA212 round fire dampers are designed for use in general ventilation systems to seal off smoke and fire between adjacent fire partitions. The fire dampers are classified according to EN 135013+A12010P (Fire classification of construction products and building elements). The fire resistance was tested as per PNEN 1366 22015 (Fire resistance tests for service installations — Part 2 Fire dampers). The entire manufacturing process meets the requirements of EN 156502010. The FDA212 fire dampers can be installed in horizontal and vertical fire partitions to provide fire resistance of EI 120 (ve ho i↔o) S (which may depend on the actual fire resistance of the partition). The fire dampers are available in the nominal diameter sizes DN200, DN224, DN250, DN280, DN300, DN315, DN355, DN400, DN450, DN500, DN560, DN600, DN630. All fire dampers have a torsion spring trip (in FDA212T) or a returnspring actuator coupled with a thermal trip (in FDA212M).

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 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 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.