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- MANUAL DAMPER (Isolation Type) MANUAL DAMPERThis damper is usually operated by hand or pressure. BY/RBYGenerally Leakage Class Ⅲ or Ⅳ is required for this damper in accordance with ASME AG-1.
- CONTROL DAMPER (Isolation Type) CONTROL DAMPERThis damper is usually operated by Actuator. on ASME AG-1, depending on job-site or customer request.BY/RBYGenerally Leakage Class Ⅱ, Ⅲ or Ⅳ is required