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 80630 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.
There is a separate assembly, measuring, balancing and maintenance instruction for this product.
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.