Systemair TUNE-R Round Air Valve 230V With Damper C4 Class

Tune-R is a control valve for round air ducts. The special design allows external insulation up to 50 mm. The valve can be supplied in a manual or motorized version with an integrated position indicator.
The valve is made of galvanized steel sheet and does not contain silicone. All seals are made of black rubber. The plastic bushings are made of PPO material. All materials are flame retardant. The valves are available from 80 to 630 mm in size.
Stiffness class versions according to EN 1751
1 - shell tightness class A and blade tightness class 1 (without rubber gasket on the inlet and without rubber gasket on the blade)
2 - shell tightness class C and blade tightness class 1 (rubber gaskets on the inlet and rubber gaskets on the blade)
3 - shell tightness class C and blade tightness class 4 (rubber seal on the inlet and rubber seal on the blade)