D664 and D665 Stainless Steel Control Dampers. CSI 3-Part Specifications.

D664 and D665 Stainless Steel Control Dampers

General

The D664 and D665 Stainless Steel Control Dampers ("Dampers") control airflow in conventional air handling systems in damp or corrosive environments. The D664 Damper has parallel blades and the D665 Damper has opposed blades. The stainless steel blades and frames, stainless steel side seals, and overlapping blades and seals minimize leakage. Blades interlock for better coverage and rigidity.

Features

� Stainless steel construction for use in damp or corrosive environments
� Stainless steel moving parts for reduced friction and lower required torque
� Stainless steel side seal for minimal blade-end air leakage
� Vinyl blade seal ensures very low leakage

Description

Specifications

Models:
D664 Parallel-Blade Damper
D665 Opposed-Blade Damper

Single Section Sizes:
NOTE: Dimension A is the nominal frame dimension along the blade length. Dimension B is the nominal frame dimension perpendicular to Dimension A.

D664 Parallel-Blade Damper:
Dimension A: 6 to 48 in. (152 to 1219 mm)
Dimension B: 8-3/4 to 96 in. (222 to 2438 mm)
D665 Opposed-Blade Damper:
Dimension A: 6 to 48 in. (152 to 1219 mm)
Dimension B: 11-3/4 to 96 in. (298 to 2438 mm)
Dampers are 1/4 in. (6.3 mm) undersized unless otherwise noted

Multisection Dampers:
Applications requiring Dampers larger than 48 x 96 in. (1219 x 2438 mm) are supplied as multisection Dampers

Maximum Approach Velocity:
2000 ft/min

Maximum Pressure Differential:
4 in. wc

Frame Construction:
4-in. (102 mm), 18 gage, 304-type (2B finish) stainless steel in hat-shaped configuration
316-type (2B finish) stainless steel optional

Blades:
Construction:
   18 gage, 304-type (2B finish) stainless steel, 6 in. (152 mm) wide
   316-type (2B finish) stainless steel optional
Bearings:
   Standard: Bronze oilite
   Optional: Oilite thrust for vertical blade orientation, nylon, Celcon� (trademark of Hoechst Celanese Co.), and Sintered stainless steel
Blade seals:
   Blade ends: Stainless steel side seal, Neoprene optional
   Blade edging: Vinyl grip seal, Neoprene optional
Axles:
   1/2-in . (13 mm) diameter, 304-type stainless steel
   Drive axle extendable 6 in. (152 mm) beyond frame

Linkage:
Face linkage
Chevron-type formed brackets of 1/8-in. (3 mm) stainless steel
Stainless steel trunnions and 5/16-in. (8 mm) stainless steel rod in Celcon bearings

Leakage Characteristics:
3.3 cfm per sq ft of damper face area at 1 in. wc
Air leakage ratings are based on tests of 48 x 48 in. ( 1219 x 1219 mm) Damper according to Air Movement and Control Association, Inc. (AMCA) Standard 500 using Test Set-Up 5.5 with damper closing torque applied to Damper of 6 in. lb per sq ft of Damper area, with a minimum of 25 in. lb.

Refer to the following leakage multiplier chart for leakage at pressures other than 1 in. wc:

Static Pressure in In. WC	Multiplier
1 2 3 4	1.00 1.41 1.73 2.00

EXAMPLE:
Leakage at 4 in. wc (2.00 x 3.3) = 6.6 cfm per sq ft

Actuator Sizing:
6 lb in. per sq ft of Damper face area, with minimum of 25 lb in.

Actuator (Electric, Pneumatic, or Electronic) Mounting:
External mounting: Stainless steel axles that extend 6 in. (152 mm) beyond frame, standard
Optional factory provisions for external or internal mounting:
Internal mounting: Uni-mount, for 1 or 2 sections, steel or stainless steel
Jackshaft: For multisection dampers, 1 in. (25mm) diameter steel or stainless steel

Temperature Range:
-40º to 140ºF (-40º to 60ºC)

Orientation:
Horizontal or vertical damper orientation. For vertical damper orientation, vertical blades are not recommended.

Shipping Weight:
6.5 lb per sq ft (31.75 kg per sq m), average weight



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