Dayton
Dayton 22CV78 Square Balancing Damper 8x8 hvac control
A square balancing damper with a manual single blade for 8-inch ducts, galvanised steel frame and 2000 FPM maximum velocity
- Manual quadrant locks blade position for steady airflow
- Galvanized steel frame resists corrosion in duct systems
- Rated for 2,000 FPM velocity in low-pressure ducts
- Withstands 180°F maximum operating temperature
- 20-gauge blade and 22-gauge frame handle 1.0 in wc differential
Square Balancing Damper 8x8
This manual single-blade damper fits 8-inch square ductwork and is built for low-velocity air balancing in commercial or residential HVAC systems. The galvanized-steel frame and 20-gauge blade handle temperatures up to 180 degrees F. A locking manual quadrant lets technicians set and secure the blade position.
Manual Operation Limits
The actuator is a hand-adjusted quadrant, so airflow changes require physical access to the damper. Maximum design velocity is 2,000 FPM and the pressure differential must not exceed 1.0 in wc. Systems running higher static pressures or automated zoning will need a different control method.
Capacity and Headroom
The 8-by-8-inch frame with 1-7/8-inch depth suits standard branch ducts in low-velocity layouts. At the rated limits it balances supply or return branches cleanly, but it cannot modulate automatically and will not seal tightly enough for high-pressure or high-leakage-class applications.
Highlights
- Manual quadrant locks blade position for steady airflow
- Galvanized steel frame resists corrosion in duct systems
- Rated for 2,000 FPM velocity in low-pressure ducts
- Withstands 180°F maximum operating temperature
- 20-gauge blade and 22-gauge frame handle 1.0 in wc differential
Specifications
| Brand | DAYTON |
|---|
Questions about this item
Should I choose the 8x8 size or another dimension for my duct?
The 8x8 size matches ducts measuring 8 inches by 8 inches; the frame is 7 3/4 inches square so it fits that standard opening.
What does the 2,000 FPM velocity rating mean when the damper is installed?
It indicates the maximum air speed the single blade can handle without excessive noise or pressure loss in low-velocity systems.
How does the manual quadrant actuator limit balancing precision?
The locking manual quadrant lets you set the blade position by hand and lock it, but it cannot modulate automatically like a motorised actuator.
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