Any dust-gas-air duct must be equipped with a complex of valves, whose main purpose is to prevent emergency situations if the temperature of the medium exceeds the permissible values. Activation of valves leads to shutdown of boilers and other installations mounted at thermal power plants, workshops, etc. Rectangular gastight dampers are designed to operate with media where temperature and pressure do not exceed + 400 ° C, 0.004 MPa.
Damper for air and gas ducts with one-way type of rotation is installed in a special section of a pipe. This simple device allows controlling the amount of gases passing in a given volume. The shutter can be manually or electrically controlled.
Rectangular gastight dampers are produced in various modifications, but always in accordance with State Standard. The main material for body and flap welding is steel.