EWC Controls logo
Ph: 1-800-446-3110

Fx: 1-732-446-5362
EWC Controls, Inc.
385 Highway 33
Englishtown, NJ 07726
Static Pressure Control
The EBD (Electronic By-Pass) style 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 0.5" 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
Round EBD
Round Sizes
8"
10"
12"
14"
16"
18"
Model EBD
Rectangular Sizes
12" X 8"
12" X 10"
12" X 12"
20" X 8"
20" X 10"
20" X 12"
Model PS-4
PS4
Model PS-4 pressure switch available separately for use with URD and ND style dampers.
Model PRD
Model PRD
Model PRD pressure regulating damper is a single blade, steel, barometric damper with a counter 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.
Size
12" X 8"
12" X 10"
12" X 12"
20" X 8"
20" X10"
20" X12"
CFM
1000
1200
1400
1600
2000
3000
Model PRD-RD
Model PRD
Model PRD-RD pressure regulating damper is a single blade, round variation of a barometric relief damper. This is the simplest, most economical 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.
Size
8"
10"
12"
14"
16"
CFM
400
750
1200
1800
2400
Other sizes available upon request.