Dampers for Industrial Plants, FELLOW CO.,LTD.

PRODUCT

Louver Damper

Louver Damper

Construction

Same as Butterfly Dampers, used for shut-off, flow-control and balancing of the flow. And in case of installation in a duct, it is easy to install in a narrow space.

  1. It consists of casing, blades, shaft, gland packing, sealing mechanism and actuators.
  2. Normally the blades are rotated 0 to 90 deg. and control or shut-off the flow.
    There are two ways of the blade rotation,
    Parallel Open-Shut ( for ON-OFF ) and Opposite Open-Shut ( for FLOW-CONTROL)

Product Line

  1. Round, diameter upto 5000mm or rectangular, from 1000mm up to 3500mm, and the following types,
    1) Normal Type : up to 350℃
    normal: metal touch / high close: packing
    2) High Temperature Type : from 351℃  to 1000℃
    normal: metal tough / high close: packing
    3) Anti-Erosion Type
    normal: metal touch / high close: packing
    (Resin lining, Hastelloy lining, also available)
    4) Anti-Abrasion Type
    normal: metal touch / high close: packing
    5) Double Louver Type
    TWO Single louver dampers arranged parallel in duct and ZERO leakage by seal air upon full close.
    6) Tandem Louver Type
    Same construction as the double louver type but two blades on one shaft for cost saving.
  2. Actuator: Air, Electrical, Hydraulic types and Manual type are available.
Louver Damper Louver Damper

Special features

  1. Have a buffer effect when full open.
    Our blade design has effect to mitigate the flow disorder of air or gas.
  2. Opposite Open-Shut type has a wide control range of flow by selecting adequate blade feature and adequate actuator, etc.
  3. Realize high close, using elastic sheet (close ratio: 99.9 ～ 99.95 % in case of 4000mm dia.)
  4. By our own design of seal construction, to keep high close, even temperature change of flow.
  5. Applicable as the control damper for large diameter duct.
Louver Damper

Special features

Air or Gas Duct in Boilers for power generation, Incinerators, Iron & Steel Plant, Cement Plant, Glass Making Plant, Oil Refinery, Deodorization Plant, Marine Boilers, etc.

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