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 Removepartnumbers knoblochd