Siemens 331-2961, Damper Actuator, Pneumatic, Number 4, 4″ Stroke, 8-13psi, Integrated Pivot Mount, UL Rec Fire & Smoke.
331 No. 4 Pneumatic Damper Actuator, UL recognized for fire and smoke applications; rugged, metal-fabricated device provides gradual or positive actuation of HVAC and fire/smoke dampers. 8 to 13 psi, integral pivot mounting, replaceable diaphragm; Air connection of 1/8″ NPT female, dual barb elbow fitting for 1/4″ OD tubing.
Actuator Type: Pneumatic
Pneumatic Model: No. 4
Spring Range: 8-13 psi
Ball Joint Connector: No
Clevis: No
Mounting Style: Fixed
Pivot: No
Pneumatic Bracket: No
Positioning Relay: No
Stroke: 4 in
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