Constant flow damper with manual setting of one flow. DAU is a constant flow damper, which facilitates balancing of ventilation systems and gives correct flow from the start.
The
unit compensates e.g. connection and disconnection of system parts,
clogging of filters and ducts, thermal lift forces, wind effects, window
opening etc.
Ø 80–315 fullfills pressure class A in closed position.
Fulfils tightness class C.
The
flow is set by loosing the center nut and via the knob turning the
scale arrow so it points at the wanted flow on the scale. Then the
center nut is tightened.