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Rectangular dampers

Photo of product family: Rectangular dampers

Rectangular dampers are produced in three versions. The first one is the multi-blade damper DSQW.

Its housing is made of galvanized sheet and its closing blades are of aluminium. Additionally the blades can be equipped with the EPDM seal to increase leaktightness of the damper.

Maximal dimensions of the damper are limited by its width and equals to 1400 mm. The second one is the multi-blade damper DSQWA in which all elements are made of aluminium profiles.

In case of bigger dimensions the damper is composed of 2 or 3 segments. The third one is the galvanized single-blade damper DSQ which is applicable for maximal cross-sections 600 x 600 mm.

Rectangular dampers - Products range
Miniature picture Product code Name of product Files to download
Photo of product Rectangular single-blade balancing dampers DSQ

Rectangular single-blade balancing dampers


Rectangular single-blade dampers can be used to control
and isolate air flow in square ductwork. The damper
blade is reinforced by the transverse embossing.

The damper can have a hand-operated damper mechanism,
an externally-mounted actuator, or an actuator mounting.
The hand operation requires turning the control handle,
and the opening angle of the damper blade can be read on the control
handle's bezel. The damper blade opening angle can be fixed
with two stop screws.
The standard version has a hand-operated damper mechanism.

Rectangular single-blade balancing dampers
Photo of product Rectangular multi-blade dampers DSQW

Rectangular multi-blade dampers


The DSQW rectangular multi-blade dampers can be used to control
and isolate air flow in square ductwork. The dampers can be
installed in ventilation ducts, as wall-mounted air flow regulators,
or AHU air flow regulating and shutoff units.

All dampers have a housing made of 4 galvanized steel sheet profiles
framed with PQ angles, and a closure consisting of aluminium blades.
The blade height is the same for all product sizes.

Rectangular multi-blade dampers
Photo of product Aluminium multi-blade dampers DSQW-A

Aluminium multi-blade dampers


The DSQW-A rectangular multi-blade aluminium dampers can be used to
control and isolate air flow in square ductwork.
The dampers can be installed in ventilation ducts, as wall-mounted
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 1751:2003.

Aluminium multi-blade dampers
Photo of product Steel non-return air dampers DSQOW

Steel non-return air dampers


The self-closing multi-blade non-return steel dampers with aluminium blades
are designed for air pressure control in the ventilation system. The blade
design and mounting allow automatic air flow exhaust under the incoming pressure.

This prevents overpressurizing the ductwork. The housing is made of galvanized steel angles.
The blades are made of aluminium sections.
The air damper is provided with a housing made of 4 angles of the same type as those used
in the fabrication of the DSQW air dampers. All blades are provided with sealing gaskets.

Steel non-return air dampers
Photo of product Aluminium selfclosing multi-blade dampers DSQOW-A

Aluminium selfclosing multi-blade dampers


The self-closing multi-blade non-return aluminium dampers are
designed for air pressure control in the ventilation system.
The blade design and mounting allow automatic air flow exhaust under
the incoming pressure. This prevents overpressurizing the ductwork.

The housing and the blades are made of aluminium sections.
The air damper is provided a housing made of 4 angles of the same type
as those used in the fabrication of the DSQW-A air dampers.
EPDM gaskets are installed in the top and bottom housing walls.
The DSQOW-A air damper features moving aluminium blades, each 80 mm high.
The blade height is the same for all product sizes. The blade bearings are
fitted inside the upright sections.
The versions with vertical partitions are available for A ≥ 1400 mm and
according to these conditions:

Aluminium selfclosing multi-blade dampers
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