331-2856 | Damper Actuator, Pneu, Number 6, 4" Stroke, 8-13psi, Pivot Mount, Clevis | Siemens

This 331 Number 6 Pneumatic Damper Actuator is a rugged, metal-fabricated device that is UL recognized for use on fire dampers and leakage-rated dampers. This actuator has a nominal spring range of 8 to 13 psi, is pivot mounted and has a replaceable diaphragm. This actuator has a 1/8" NPT female air connection.