Has
a turning circular blade with an EPDM-rubber seal which tightens
against the inside of the damper when closed. The blade can be adjusted
in a 090 angle.
The cup at Ø 80–630 can be complemented with the special insulation cup IK at insulation thicker than 50 mm.
The damper can be used for regulating at rare occations.
Ø 80–315 fullfills pressure class C in closed position.
Ø 355–630 fullfills pressure class B in closed position.
Ø 710–1000 fullfills pressure class A in closed position.
The torque needed for the motorizing is given in the adjacent table.
Ø 710–1000 is not possible to motorize on site.