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Schneider Electric MK-121xx Series Damper Actuators, Proportional

Damper Actuators, Proportional
MK-121xx Series

For proportional pneumatic actuator with 3 in.² (19 cm²) effective area used to control small dampers and mixing boxes.

• All-plastic construction.
• Meets UL-465 requirements for air plenum mounting.
• Ideal for VAV terminal unit control.

Select a link under the "item" tab below to order.

Cat #(psi)Nominal Operating Range psigBased on 1.5 psi Pressure to Actuator lb15 psi Supply Dual Press. System lb15 psi Supply Single Press. System *** lb20 psi Supply Single or Dual Press. System *** lb15 psi SupplyDual Press. System lb-in.15 psi Supply Single Press. System *** lb-in.20 psi Supply Single or Dual Press. System *** lb-in.in.
MK-1210033 to 84.516.521364.54.54.52
MK-1211055 to 1010.510.515304.54.54.52
MK-1212088 to 1319.51.56211.54.54.52
MK-1214033 to 134.51.56211.54.54.52
Construction:
Housing: UL-94-5V flame rated plastic material to meet UL-465 requirements for air plenum mounting
Diaphragm: Beaded molded neoprene
Stroke: 2 in. (50.8 mm)
Nominal Damper Area: Actuator sizing should be done in accordance with damper manufacturer’s specifications
Start point: Retracts actuator shaft on loss of air pressure
Maximum air pressure: 30 psig (207 kPa)
Ambient temperature limits:
Shipping: -40 to 180°F (-40 to 82°C)
Operating: -40 to 180°F (-40 to 82°C)
Air connections: Barbed for 1/4 in. O.D. plastic tubing [for runs up to 20 ft. (6 m)
Mounting: In any position. Mounting bracket and ball joint connector for 5/16 in. diameter push rod assembled to actuator
Dimensions:

5-5/8 H x 3-9/16 W x 3-5/16 D in. (143 x 90 x 84 mm)

Stroke (inch) 2

 

 

 

 



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