Dayus Opposed Blade Dampers

· Opposed blade damper with slide operator
· Extruded aluminum frame with rollformed aluminum blades
· Pressure fit nylon pivot pins (rattle free & non loosening)
· Easily operated with a flat screwdriver
· Available on 2” increments as standard
· Custom sizes available but extra charge may apply
· Only available in Mill

Any available size in 3 days! Call us at 877-711-4822 if you do not see the size you need listed.

dayus obd damper specifications

dayus obd

dayus obd open

Do you have questions about the products on this page?

Click on the ? image on the left or this link to ask us your questions!
#1 Q:   How much leakage do these have when closed?
A:   Dayus does not publish leakage specs. They seal well but there are no silicon edge seals so there will likely be some leakage at higher pressures.

       Asked on 2020-08-23 by WPI
#2 Q:   Reference Q3, could an owner- devised supplementary lever system be used to manually actuate the installed operator arms?
A:   Not likely. There is no easy way to access the arms outside the system provided with the dampers.

       Asked on 2020-08-23 by WPI
#3 Q:   Could the damper be modified by me for modulation by an electric actuator?
A:   Typically no. There are no shafts that extend out the sides where an actuator could be mounted.

       Asked on 2016-09-08 by Rory
#4 Q:   Is it possible to have one of these where they open when air pressure is applied ? like when a generator starts up ?
A:   Not this particular unit, but we do have some gravity dampers that would blow open and close via gravity when the fan shuts off.

       Asked on 2014-05-18 by Earnest
#5 Q:   The description says these are manually actuated. Is there a lever arm or somesuch?
A:   There is a lever that one would access with a screwdriver through the face.

       Asked on 2013-06-25 by Isaac

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