Greenheck Fan Corporation - Products

Backdraft & Pressure Relief Dampers

Designed to allow airflow in one direction and prevent reverse airflow. Backdraft dampers are available in galvanized steel, aluminum, PVC, and 304 stainless steel. Pressure Relief dampers are available in galvanized steel and 304 stainless steel. Barometric 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

Models EM/ES/PS/WD

Exhaust Dampers
Exhaust backdraft damper models are designed to allow exhaust airflow but prevent airflow in the reverse direction. Typically used with a fan or power roof exhauster. Vertical or horizontal mount.

Intake Dampers
Intake backdraft damper models are designed to allow supply airflow into a building but prevent airflow in the reverse direction. Typically used with a fan or gravity intake ventilator. Vertical or horizontal mount.

Model 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 HB

Heavy Duty/Industrial Backdraft
A backdraft damper is an isolation damper allowing air in one direction only. Greenheck’s HB damper series is designed to prevent back flow at static pressures and velocities up to 20 in. wg and 6400 fpm, respectively.

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

Downloadable Greenheck Literature
Viewable with the Adobe Acrobat Reader
(Click here for more information or to download the Acrobat reader)

Catalog:

Heavy Duty and Industrial Control Dampers - HB, HRP, HCD, HSD, & HTD Series (1.2M)

Dampers for Centrifugal Fans (622k)

Backdraft & Pressure Relief Dampers - Selection and Application Guide

Options:

Adjustable Pressure Controller (APC) for EM Series (201k)

Installation, Operation and Maintenance Manuals:

Adjustable Pressure Controller (#468292) (534k)

BR Series - Counterweight Adjustment (#469420) (989k)

EM and GM Series (#468391) (340k)

HB Series (469620) (238k)

HPR Series Adjustment on Pressure Relief Dampers (#469134) (50k)

WD Series - End Switch Kit (#452723) (180k)

MP-100A (#463548) (203k)

MP-210 (#463546) (158k)

MP-220A (#463544) (157k)

MP-310 (#463547) (87k)

MP-323 (#463545) (79k)

PS Series Motor Packs (94k)

Specification Sheets:

EM Series up to 3500 fpm, 10 in. wg:

Exhaust Damper, Horizontal Mount, No Flange (EM-10) (249k)

Exhaust Damper, Horizontal Mount, Flange on Discharge (EM-11) (249k)

Exhaust Damper, Horizontal Mount, Flange on Intake (EM-12) (249k)

Exhaust Damper, Vertical Mount, No Flange (EM-30) (187k)

Exhaust Damper, Vertical Mount, Flange on Discharge (EM-31) (187k)

Exhaust Damper, Vertical Mount, Flange on Intake (EM-32) (187k)

Intake Damper, Horizontal Mount, No Flange (EM-40) (248k)

Intake Damper, Horizontal Mount, Flange on Discharge (EM-41) (248k)

Intake Damper, Horizontal Mount, Flange on Intake (EM-42) (248k)

ES Series up to 2500 fpm, 2 in. wg:

Exhaust Damper, Horizontal Mount, No Flange (ES-10) (116k)

Exhaust Damper, Horizontal Mount, Flange on Discharge (ES-11) (116k)

Exhaust Damper, Horizontal Mount, Flange on Intake (ES-12) (116k)

Exhaust Damper, Vertical Mount, No Flange (ES-30) (91k)

Exhaust Damper, Vertical Mount, Flange on Discharge (ES-31) (91k)

Exhaust Damper, Vertical Mount, Flange on Intake (ES-32) (91k)

Intake Damper, Horizontal Mount, No Flange (ES-40) (93k)

Intake Damper, Horizontal Mount, Flange on Discharge (ES-41) (93k)

Intake Damper, Horizontal Mount, Flange on Intake (ES-42) (93k)

PS Series up to 2500 fpm, 2 in. wg:

Exhaust Damper, Vertical Mount, PVC (PS-32) (329k)

WD Series up to 2500 fpm, 2 in. wg:

Exhaust Damper, Horizontal Mount, No Flange (WD-100) (672k)

Exhaust Damper, Horizontal Mount, Flange on Discharge (WD-110) (672k)

Exhaust Damper, Horizontal Mount, Flange on Intake (WD-120) (672k)

Intake Damper, Vertical / Horizontal Mount, Flange on Discharge (WD-200) (718k)

Intake Damper, Vertical / Horizontal Mount, Flange on Discharge (WD-210) (718k)

Intake Damper, Vertical Mount / Horizontal, Flange on Discharge (WD-220) (718k)

Exhaust Damper, Vertical Mount, Flange on Intake (WD-300) (741k)

Exhaust Damper, Vertical Mount, Flange on Discharge (WD-320) (741k)

Exhaust Damper, Vertical Mount, No Flange (WD-330) (741k)

Intake Damper, Vertical Mount, No Flange (WD-400) (377k)

Intake Damper, Vertical Mount, Flange on Discharge (WD-420) (377k)

Intake Damper, Vertical Mount, Flange on Intake (WD-430) (377k)

Intake Damper, Horizontal Mount, No Flange (WD-410) (377k)

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)

BR Series Supplement (76k)

HB Series - Heavy Duty / Industrial Backdraft up to 6400 fpm, 20 in. wg:

Aluminum, single thickness blade (HB-110) (744k)

Fabricated, single thickness blade (HB-120) (755k)

Fabricated, airfoil blade (HB-230) (768k)

Fabricated, Class III airfoil blade (HB-240) (716k)

Fabricated, Class III airfoil blade (HB-330) (795k)

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)

Specialty Backdraft Dampers (Fan and Vent Accessories):

GM-30 Series (For use with Propeller Sidewall Fans) (178k)

WD-323 (For use with Centrifugal Sidewall Exhaust Fans) (83k)

WD-340 (For use with Centrifugal Utility Fans) (79k)