331-2857 Siemens Actuator

This 331 Number 6 Pneumatic Damper Actuator is a rugged, metal-fabricated device that provides gradual or positive actuation of HVAC and fire/smoke dampers. This actuator has a nominal spring range of 3 to 8 psi, is pivot mounted and has a replaceable diaphragm. This actuator has a 1/8″ NPT female air connection.

Technical Specifications

Pneumatic Model	No. 6
Spring Range	3-8 psi
Ball Joint Connector	NO
Clevis	YES
Mounting Style	Pivot
Pivot	NO
Pneumatic Bracket	NO
Positioning Relay	NO
Stroke	4 in