Rectangular Volume Control Dampers
D2 and D3 Series
D2 series is an ultra-low leakage control damper which includes blade and jamb seals. The D3 series is a general purpose damper intended for applications where low leakage performance is not necessary.
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Table 1 | Table 2 | Table 3 | Table 4 | Table 5 | Table 6 | Table 7 | Table 8 | Table 9 |
XX | X | X | X | XXXXXXXXX | XXXXXXXXX | X | X | X |
Table 1 | Product Type |
D2 | D642 (Class II Leakage, 3 V blade with seals) |
D3 | D640 (Class III Leakage, 3 V blade without seals) |
Table 2 | Blade Action |
P | Parallel |
O | Opposed |
Table 3 | Frame |
A | 16 gauge galvanized frame with galvanized |
Table 4 | Axle Bearings and Seals Materials |
A | Acetal Bearings /No Seal |
B | Acetal Bearings/Vinyl Seal |
C | Bronze Bearings/No Seal |
D | Bronze Bearings / Vinyl Seal |
Table 5 | Width |
(006-072) | Standard Rectangular Damper Width |
Table 6 | Height |
(006-072) | Standard Rectangular Damper Height |
Table 7 | Sizing |
N | Nominal Sizing |
Table 9 | Actuator Mounting |
A | External LH Standard withoutjackshaft (may include jackshaft for larger sizes) |
B | Internal LH Standard without jackshaft (may include jackshaft for larger sizes) |
C | External RH Standard without jackshaft (may include jackshaft for lager sizes) |
Size Range: Minimum Size: One Blade: |
6 in. wide by 6 in. high |
Two Blade: |
6 in. wide by 10 in. high |
Maximum Size: Single Section: |
48 in. wide by 72 in. high |
Multiple Section: |
unlimited |
Temperature Rating: |
180 F (82 C) maximum |
Standard Construction: Blade: |
16 gauge galvanized steel 3-V |
Action: |
Parallel or Opposed |
Frame: |
16 gauge galvanized steel Hat-channel |
Bearings: |
Synthetic (Acetal) |
Linkage: |
Side linkage out of airstream (concealed in frame) |
Axles: |
1/2 in. square plated steel |
Jamb Seals: |
Compression-type Stainless Steel |
Blade Edge Seals: |
Extruded Vinyl |