4040 / 4040P: Damper for Controls by Others

Submittal Form
SKU: 4040 Category: Tags: , , ,


The Young Regulator 4040 and 4040P are round, low leakage, dampers.  They each provide efficient air flow control in conventional air handling systems where minimal air leakage past the closed damper is critical. A commercial quality shell and sleeve with a 1/2″ plated steel shaft makes these ideal for medium velocity applications and differential pressure applications up to 4″W.C., with a maximum approach velocity of 2,000 feet per minute. Both dampers can be operated by a variety of manual controls or by other manufacturers’ motors. The 4040P comes with a mounting plate for building management controls by others.

Additional information


4 pt. Crossflow sensor for pressure independent (4041-CF4), Larger plate for actuator and controls by others (4041-P), Stainless Steel Construction, Many Motor Options

Size Information

One end straight, one end crimped. Rolled stiffening beads., Diameters greater than 14" will be constructed with a spiral shell.


12" – 24" – 20 ga. Galvanized Steel, 4" – 10" – 24 ga. Galvanized Steel


20 ga. Galvanized Steel


½” Plated Steel, Extended 3" on Drive Side


Oil Impregnated Bronze

Low Leak Seals

EPDM Rubber


4" – 20"

Shell Length


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