Round Single Blade Aluminum Damper

The model 75 true round damper is manufactured using .080″ aluminum. The frame is roll formed with two beads which adds rigidity to the frame and acts as a stop for the attached ductwork. This damper is designed to tightly close when the blade contacts the ¼” neoprene seal that is attahed to the damper frame.

Designed to operate at a maximum differential pressure of 4″ w.g.

Quick Specs

Description

Round Single Blade Aluminum Damper Materials and Construction

FRAME: .080” thick (nominal) extruded aluminum, 7½” deep.
BLADE: .080” thick (nominal) extruded aluminum, reinforced for frames over 18” dia.
SHAFT: ½” dia. extruded aluminum.
BEARINGS: Flange Oilite Bronze.
SEALS: On frame, ¼” thick closed cell neoprene. Temperature range is -35°F to 180°F.
CONTROL ROD: Cadmium plated steel.
FINISH: Mill.

Literature

Round Single Blade Aluminum Damper Submittal

Model:	75
Minimum Diameter:	4″ Diameter
Maximum Diameter:	36″ Diameter
Frame Depth:	7½”
Frame Type:	Round
Frame Material:	.080″ Thick Aluminum
Blade Type:	Single Blade
Blade Material:	.080″ Thick Aluminum Reinforced above 18″ Diameter
Blade Seals:	¼” Closed Cell Neoprene
Temperature Range:	-35°F to 180°F
Shaft:	½” Diameter Aluminum
Control Rod:	Cadmium Plated Steel
Bearings:	Flange Bronze Oilite
Finish:	Mill
Max Static Pressure:	4″ W.G.