Schneider Electric MK4-71xx Series Damper Actuators, Proportional
Damper Actuators, Proportional
MK4-71xx Series
For proportional pneumatic actuator with 20 sq. in. (129cm²) effective area used to control damper and air valvesin heating, ventilating, and air conditioning systems.
• Rugged cast aluminum body.
• Completely enclosed spring.
• Long lasting rolling diaphragms.
Select a link under the "item" tab below to order.
| Cat # | (psig) | 20 psi Supply Single or Dual Press. System *** lb-in. | Nominal Operating Range psig | Based on 1.5 psi Pressure to Actuator lb | 15 psi Supply Single Press. System *** lb-in. | 15 psi Supply Dual Press. System lb | 15 psi Supply Single Press. System *** lb | 15 psi SupplyDual Press. System lb-in. | 20 psi Supply Single or Dual Press. System *** lb |
| MK4-7101 | 3 ±5 | 67.5 | 3 to 8 | 30 | 67.5 | 110 | 140 | 67.5 | 240 |
| MK4-7121**** | 8 ±0.5 | 293 | 8 to 13 | 130 | 22.5 | 10 | 40 | 90 | 140 |
| Construction: | |
| Housing: | Die cast aluminum |
| Diaphragm: | Replaceable beaded molded neoprene (Part number PNV-002) |
| Stroke: | Nominal 4-1/2 in. (114 mm), adjustable 4 to 5 in. (102 to 127 mm) |
| Nominal Damper Area: | Actuator sizing should be done in accordance with damper manufacturer’s specifications |
| Start point: | Adjustable. Refer to Description Model Chart |
| Maximum air pressure: | 30 psig (207 kPa) |
| Ambient temperature limits: | |
| Shipping: | -40 to 160°F (-40 to 71°C) |
| Operating: | -20 to 160°F (-29 to 71°C) |
| Air connections: | 1/8 in. FNPT |
| Mounting: | In any position |
| Dimensions: | 17-5/8 H x 7-3/4 W x 7-5/8 D in. (448 x 197 x 194 mm) |
