Isolation Dampers

Model: DSR - Circular Bubble Tight Damper
Model: DSS - Rectangular Air Tight Damper

Isolation Dampers
  • Isolation Damper 2
  • Isolation Damper 3

Isolation Dampers

Data :
Minimum diameter (DSR): 200 mm
Minimum size (DSS): 200 x 200 mm
Maximum diameter (DSR): 1300 mm
Maximum size (DSS): 1500 x 1500 mm
Operating pressure: 2500 to 7500 Pa
Operating temperature: 50°C
Electrical rating: 230 VAC, 50/60 Hz


Description        :

OLS bubble tight isolation damper is designed to pressure rating of 2.5, 3, 4.5 and 7.5 kPa with blade deflection criteria of 1/360 of blade dimension during pressure test. The damper is bubble tight with respect to internal and external leakages. Pressure loss is very low. For our dampers, the operator can be manual, electric or pneumatic actuator. Balancing damper may be provided with lever type or handwheel manual gear operator.


  • Use blade seal instead of blade stop seal lowers operating torque
  • Low pressure loss due to absence of blade stop seal
  • Ultra-low internal air leakage due to special design blade seal at 10 kPa
  • Air tightness across blade to 7500 pascal pressure differentials
  • Zero ambient leakage to 10 kPa due to effective shaft seal
  • Teflon shaft seal reduce operating torque
  • Operating pressure and velocity to 4.5 kPa and 20m.s respectively
  • Higher operating temperature to 150°C is available


Submittal Sheet