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Heavy Duty/Industrial Dampers

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Relief Dampers

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Access Doors/Pressure Relief Doors

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DAMPERS

Relief Dampers

Relief dampers are available in galvanized steel, aluminum, 304 stainless steel and severe environment 316 stainless steel. Models are available with many different mounting orientations, airflow directions, operation types, and performance ratings

Model BR

br

Barometric Relief Dampers
Barometric Relief Dampers are an eccentrically pivoted backdraft damper for low velocity applications. Barometric Relief Dampers may be mounted vertically or horizontally.




Model HPR

hpr230
Pressure Relief Dampers
A pressure relief damper is a type of backdraft having an adjustable start-open pressure, which is capable of maintaining a relatively constant pressure at various airflows and closes upon a decrease in differential pressure. Greenheck’s HPR damper series can be used as a safety device or a controlling device. It is designed to provide pressure relief up to 6 in. wg and 3000 fpm, respectively


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Catalog:
Backdraft & Pressure Relief Dampers (4.15M)
Submittals:
Round WDR series up to 2000 fpm, 3 in. wg
Round Backdraft damper (WDR-53) (116k)
Stainless Steel Round Backdraft (SSWDR-53) (116k)
BR Series - Barometric Relief Dampers up to 2000 fpm, 2 in. wg:
Exhaust Damper, Horizontal Mount, No Flange (BR-10) (249k)
Exhaust Damper, Horizontal Mount, Flange on Discharge (BR-11) (249k)
Exhaust Damper, Horizontal Mount, Flange on Intake (BR-12) (249k)
Exhaust Damper, Horizontal Mount, No Flange, Severe Environment 316 Stainless Steel (SEBR-10) (250k)
Exhaust Damper, Horizontal Mount, Flange on Discharge, Severe Environment 316 Stainless Steel (SEBR-11) (250k)
Exhaust Damper, Horizontal Mount, Flange on Intake, Severe Environment 316 Stainless Steel (SEBR-12) (250k)
Exhaust Damper, Vertical Mount, No Flange (BR-30) (255k)
Exhaust Damper, Vertical Mount, Flange on Discharge (BR-31) (255k)
Exhaust Damper, Vertical Mount, Flange on Intake (BR-32) (255k)
Exhaust Damper, Vertical Mount, No Flange, Severe Environment 316 Stainless Steel (SEBR-30) (225k)
Exhaust Damper, Vertical Mount, Flange on Discharge, Severe Environment 316 Stainless Steel (SEBR-31) (225k)
Exhaust Damper, Vertical Mount, Flange on Intake, Severe Environment 316 Stainless Steel (SEBR-32) (225k)
Intake Damper, Horizontal Mount, No Flange (BR-40) (224k)
Intake Damper, Horizontal Mount, Flange on Discharge (BR-41) (224k)
Intake Damper, Horizontal Mount, Flange on Intake (BR-42) (224k)
Intake Damper, Horizontal Mount, No Flange, Severe Environment 316 Stainless Steel (SEBR-40) (224k)
Intake Damper, Horizontal Mount, Flange on Discharge, Severe Environment 316 Stainless Steel (SEBR-41) (224k)
Intake Damper, Horizontal Mount, Flange on Intake, Severe Environment 316 Stainless Steel (SEBR-42) (224k)
HPR Series - Heavy Duty / Industrial Pressure Relief up to 6 in. wg:
Fabricated, single thickness blade (HPR-120) (414k)
Fabricated, airfoil blade (HPR-230) (429k)
Fabricated, airfoil blade (HPR-330) (532k)
Installation, Operation and Maintenance Manuals:
BR Series - Counterweight Adjustment (#469420) (989k)
HPR Series Adjustment on Pressure Relief Dampers (#469134) (50k)

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