Heavy Duty / Industrial Dampers

Heavy Duty / Industrial dampers are designed for use in industrial and severe duty applications.

Heavy duty flanged style frame dampers with various blade styles and pressure classes. Designed to control airflow and provide shut off in HVAC or industrial process control systems.

Control Dampers

Control dampers are designed to control airflow and provide shutoff in HVAC or industrial process control systems.

Model HCD: Rectangular

Rectangular dampers are available in galvanized, painted steel, 304 stainless steel and 316 stainless steel with pressure and velocity capabilities up to 45 in. wg and 6000 fpm, respectively.

Model HCDR: Round

True round industrial dampers are available in galvanized, painted steel, 304 stainless steel and 316 stainless steel and pressure and velocity capabilities up to 20 in. wg and 6500 fpm, respectively.

Model IVDE: Inlet Vane

Typically mounted to the inlet flange of an industrial fan to more efficiently control the amount of airflow entering the fan. Available with manual, electric, or pneumatic actuators. Maximum operating temperature is 200° F.

Backdraft & Pressure Relief Dampers

Model HB: Rectangular

A backdraft damper is an isolation damper allowing air in one direction only. Greenheck's HB damper series is designed to prevent backflow at static pressures and velocities up to 20 in. wg and 6400 fpm, respectively.

Model HPR: Rectangular

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 sa safety device or a controlling device. It is designed to provide pressure relief up to 6 in. wg and 3000 fpm, respectively.

Smoke Dampers

Smoke damper is a heavy duty flanged frame style industrial control dampers UL555S qualified for use in engineered smoke control systems. Greenheck’s HSD series is a Class I leakage with pressure and velocity capabilities up to 6 in. wg (1.5 kPa) and 3000 fpm (15.2 m/s), respectively.

Tunnel Transit

A tunnel transit damper is a heavy duty damper designed to meet the rigorous environment of a transit tunnel and is especially qualified to withstand the stresses and pressures of such environments. The blades, frames, seals, and actuators are designed to meet the standards of NFPA-130, NFPA-502, UL-555S, and BS476; which are commonly found in tunnel transit specifications. Because of the demanding requirements of tunnel transit systems, the tunnel transit damper can be specifically designed to meet the requirements of every specification.

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 Contol Dampers - HB, HRP, HCD, HSD, & HTD Series (1.2M)

Dampers for Centrifugal Fans (622k)
Heavy Duty/Industrial Damper Product Selection Guide (190k)

Tunnel Transit (7231k)

Installation Instructions:

HCD Series (#469618) (540k)

HCDR Series (#469619) (562k)
HB Series (469620) (238k)
Adjustment on Pressure Relief Dampers HPR Series #469134 (50k)
Heavy Duty Smoke Damper HSD-401 (#464604) (482k)

Blade Seal Replacement (HCD Series) (175k)

Blade Seal Repalcement (HCDR Series) (88k)

O-Ring Axle Seal Replacement (509k)

Double Gland Axle Seal Replacement (472k)

HTD Series (212k)

Installation, Operation and Maintenance Manuals:

Blade Seal Replacement for HCD Series (175k)

Specification Sheets for Heavy Duty / Industiral Control Dampers::

Rectangular-

Pressure up to 6 in. wg:

Extruded Airfoil Blade (HCD-140) (624k)

Pressure Class II (8 1/2 in. wg):

3-V Blade (HCD-120) (648k)

3-V Blade, Severe Environment 316SS (SEHCD-120) (287k)

Fabricated Airfoil Blade (HCD-130) (616k)

Fabricated Airfoil Blade, Severe Environment 316SS (SEHCD-130) (243k)

Fabricated Airfoil Blade w/Insulation (HCD-135) (625k)

Pressure up to 15 in. wg:

3-V Blade (HCD-220) (628k)

3-V Blade, Severe Environment 316SS (SEHCD-220) (381k)

Fabricated Airfoil Blade (HCD-230) (651k)

Fabricated Airfoil Blade, Severe Environment 316SS (SEHCD-230) (385k)

Extruded Airfoil Blade (HCD-240) (619k)

Pressures up to 25 in. wg:

Fabricated Airfoil Blade (HCD-330) (651k)

Pressures up to 35 in. wg:

Fabricated Airfoil Blade (HCD-430) (694k)

Pressures up to 45 in. wg:

Fabricated Airfoil Blade (HCD-530) (691k)

Round:

Pressures up to 5 in. wg (HCDR-150) (661k)

Pressures up to 8.5 in. wg (HCDR-250) (699k)

Pressures up to 20 in. HCDR-350) (701k)

Isolation, Pressure up to 15 in. wg (HCDR-351) (650k)

Inlet Vane (IVDE) (132k)

Specification Sheets for Heavy Duty / Industiral Backdraft & Pressure Relief::

Backdraft Dampers (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) (703k)

Fabricated, Class III Airfoil Blade (HB-330) (782k)

Pressure Relief up to 6 in. wg relief:

Fabricated, single thickness blade (HPR-120) (414k)

Fabricated, airfoil blade (HPR-230) (429k)

Fabricated, airfoil blade (HPR-330) (532k)

Specification Sheets for Heavy Duty / Industrial Smoke Damper qualified to UL555S test standards:

Class I, Heavy Duty Flanged mounted (HSD-401) (245k)

Specification Sheets for Tunnel Transit Dampers:

Fabricated Airfoil Blade (HTD-630) (364k)

Extruded Aluminum Airfoil (HTD-640) (352k)