Assertion: damper | /r/ObjectUse | used in hvac systems
Facets:
value: mainly
type: DEGREE
value: for the air flow
type: PURPOSE
Source sentences:
text: Louvers and Dampers are mainly used in HVAC systems for the air flow, depending on the design requirement one can choose between dampers and louvers.
text: Some of the various types of dampers used in the HVAC system are mentioned below.
text: Both the dampers and louvers that are used in HVAC systems are usually made of aluminium or steel.