Brochure

15
Size List Price Size List Price
4 URD $200.00 12 URD 222.00
6 URD 203.00 14 URD 255.00
7 URD 203.00 16 URD 295.00
8 URD 207.00 18 URD 356.00
9 URD 209.00 20 URD 400.00
10 URD 212.00
18 RSD 577.00
20 RSD 600.00
Model PRD-RD pressure
regulating damper is a single
blade, round variation of a
barometric relief damper. This
is the simplest, most economi-
cal way of bypassing excess
static pressure in multi-zone
applications. Resistance is controlled by offsetting the
arm and adjusting the weights. The arm can be inserted
into either side of the damper for added versatility.
Static Pressure Control
The EBD style by-pass are self-contained units that give you the static control mounted to the damper. It is an “all-in-
one” design that makes the installation process much easier than most electronic by-pass dampers. The static pressure
can be adjusted in the field between 0.1” to 4” of pressure. This is done by the turn of a set-screw. Requires 24VAC to
operate. Tubing and pitot tube are included.
MODEL EBD MODEL PS-4
To order Pressure Switch ONLY
MODEL PS-4 List Price $250.00
NOTE: We can make any size EBD. Use with ND or
URD style damper. (Page 13 & 14)
Size List Price
12” X 8” $510.00
12” X 10” 525.00
12” X 12” 528.00
20” X 8” 528.00
20” X 10” 551.00
20” X 12” 555.00
MODEL PRD MODEL PRD-RD
Other sizes available upon request.
Additional Arms and Weights
MODEL# PRD-Weight and Arm (List Price $20.00)
Box of 10 Model # PRD-Weights -10 (List Price $99.00)
Model PRD pressure regulating
damper is a single blade, steel,
barometric damper with a coun-
ter balanced weighted arm. The
PRD provides an economical
solution for bypassing excess
air when zone dampers close.
Damper adjustment is done by
adjusting the supplied weights and by offsetting the arm.
The PRD is reversable for Airflow Direction.
Size List Price CFM
12X8” PRD $140.00 750
12X10” PRD 146.00 950
12X12” PRD 157.00 1200
20X8” PRD 172.00 1000
20X10” PRD 178.00 1400
20X12” PRD 184.00 2000
Size List Price CFM
8” PRD-RD $135.00 350
10” PRD-RD 142.00 650
12” PRD-RD 147.00 1000
14” PRD-RD 157.00 1300
16” PRD-RD 167.00 2000
Size List Price
10” $477.00
12” 518.00
14” 536.00
16” 738.00
18” 818.00
20” 855.00
Other sizes available upon request.
Additional Arms and Weights
MODEL# PRD-Weight and Arm (List Price $20.00)
Box of 10 Model # PRD-Weights -10 (List Price $99.00)
CFM Calculated @ .3” W.C.
CFM Calculated @ .3” W.C.