This 331 Number 4 Pneumatic Damper Actuator with a ball joint connector 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 13 psi, a fixed mounting plate and a replaceable diaphragm. This actuator has an air connection of 1/8″ NPT internal threads with a dual barb elbow fitting for 1/4″ OD tubing.
Damper Actuators, Pneumatics & Fittings
331-3018
Damper Actuator, Pneu No 4, 4″ Stroke, 3-13psi, Fixed Mount Plate
$519.47

