The Young Regulator Model 4095 is a round barometric damper. It is used to automatically regulate system static pressure. In a zoned system, as zone dampers open or close the system static pressure changes. This could cause high air delivery velocities, noise and discomfort.
the 4095 is field adjustable. Reposition the weight further from the axle for higher static.
The axle turns in oil impregnated bronze bushings for smooth quiet operation. The damper shell is formed in heavy-gauge, galvanized steel for rigidity.
For higher pressure systems use Models 3092 and 4092 motorized bypass dampers.