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HONEYWELL D640A2012 Rectangular Volume Control Dampers

HONEYWELL D640A2012 Rectangular Volume Control Dampers. Control Dampers are ruggedly built with 3-V style blades for application as automatic control or manual balancing dampers in low to medium pressure and velocity systems. A wide range of electric or pneumatic actuators are available for these models. The D640 series is a general purpose damper intended for applications where low leakage performance is not necessary.


Standard frames utilize heavy-duty 5 in. x 1 in. 16 ga. galvanized steel hat channel frame, designed for installation inside ductwork.

Reinforced corners.

Low profile head and sill on dampers less than 17 in. high.

Options: stainless steel and aluminum (14 and 12 gage galvanized steel only).

Frame options are: single flange (either side of frame) or double flange (both sides of frame).

Standard 3-V blades are fabricated from a single thickness of 16 ga. galvanized steel incorporating three longitudinal structural V-grooves (each running the full length of the blade).

This blade has low to medium velocity and pressure capabilities.

1/2 in. diameter square plated steel axles positively locked to the blades eliminate slippage between blades and axles.

Removable shaft extends 6 in. beyond frame.

Optional stainless steel construction.

Optional stainless steel construction.

Molded synthetic (acetyl) bearings rotate in a polished extruded frame raceway.

This product was added to our catalog on Monday 24 July, 2006.

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