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Schneider Electric MK-3121 Pneumatic Damper Actuator 8-13 PSI 21 lb-in

Manufacturer

Picture for manufacturer Schneider Electric (Barber Colman)

Part Number

MK-3121
9 reviews
Sale Price

$501.31

In Stock (8)

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Usually delivered within 2 days

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Product Details

The Schneider Electric (Barber Colman) MK-3121 is a linear pneumatic damper actuator designed for reliable HVAC control applications. This robust actuator features a die-cast aluminum body with a long-lasting neoprene rolling diaphragm, providing years of dependable operation in demanding environments.

Key Specifications:

  • Torque rating: 7 inch-pounds at 15 PSI, 21 inch-pounds at 20 PSI
  • Spring range: 8 to 13 PSIG for precise modulating control
  • Diaphragm effective area: 8 square inches
  • Maximum pressure rating: 30 PSIG
  • Operating temperature range: -20°F to 160°F
  • Compact dimensions: 5-7/8" W x 5-1/2" D x 12" H

Features:

  • Rugged cast aluminum construction for durability and corrosion resistance
  • Rolling diaphragm design ensures smooth operation and extended service life
  • Adjustable stroke-stop provisions for customized damper positioning
  • 1/8" female threaded air connection for easy installation
  • 2-position (on/off) proportional control signal
  • NEMA 1 environmental protection rating

This actuator is ideal for controlling air volume in heating, ventilating, and air conditioning systems where pneumatic control is required. The spring return mechanism ensures fail-safe operation in case of air supply loss.

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