3151: Spring Return Damper w/ Anti-Backlash

Submittal Form
SKU: 3151 Category:


The Young Regulator Model 3151 is a motorized, rectangular, opposed-blade damper.  It is constructed of an extruded aluminum frame and blades, a stainless steel slide, and a 24V or 120V motor.

Features include:  Special motor design with anti-backlash design to protect the gear train from closing shock.  Applications include zone controls, outside air, exhaust air vents, although they may be used to control air in any system duct.

  • 3151-PO   Power Open / Spring Closed
  • 3151-PC   Power Closed / Spring Open

Must Specify a motor choice


Additional information


.050 Aluminum Extrusion with Reinforcing Channels


.050 Aluminum Extrusion with Reinforcing Channels


Integral 5/16" Steel


Stainless Steel

Blade Bushing

Individual Synthetic

Size Information

Undersized 1/8" High & Wide

Frame Width

2 1/8" Wide

Blade Width

1.438" – Contained within frame

Min. Size

4" x 4"

Max Size

24" x 18", 36" x 14" Bottom Mount