Catalog
Damper Actuators
usa.siemens.com/hvac
B-70
Specifications
Effective Diaphragm Area
2
2
Stroke
Stroke (hesitation models)
Max. Air Pressure
Nominal Spring Ranges
Nominal Spring Range (hesitation model)
Temperature Range
Materials
Air Connection
Type of Mounting
Shipping Weight (Actuator only)
Product Ordering
No. 4 Actuator Description
3
Mounting
Style
No. 4 Actuator Part Number
Nominal Spring Range
3-7 psi
(21-48 kPa)
3-13 psi
(21-90 kPa)
5-10 psi
(35-69 kPa)
8-13 psi
(55-90 kPa)
Hesitation Model
2-3, 8-13 psi
(14-21, 55-90 kPa)
331-2904
1
331-2905
1
331-2906
1
331-2961
1
—
— — — 332-2961 —
331-2929 331-2930 — 331-2968 —
— — — 332-2968 —
— — — 331-2963 —
— — — — 331-2974
— 331-3018 — 331-3017 —
331-3000 331-3001 331-3002 331-2973 —
— — — 332-2973 —
If the actuator is inoperative, replace the entire actuator.
Ordering Notes:
11/05/21 B-52 Removepartnumbers knoblochd