Fluid & Gas Flow Equipment, HVAC

Backdraft Damper helps meet 2014 NFPA rquirements.

March 17, 2015

KB Duct Backdraft Damper helps installers meet 2015 NFPA requirements regarding installation of Explosion Isolation Device on all suction side ducts that transport material with KST value above zero. Constructed from heavy-duty welded steel, KB-NRV no-return explosion isolation valve protects workers and facilities from damaging effects of baghouse or filter explosion. Features include flanged inlet and outlet with coflanges, inspection access door, grounding lug, and locking mechanism. Read More


Dynamic Fire Dampers comes in sizes to 128 x 100 in.

December 22, 2014

UL-Listed, non-actuated, dynamic fire dampers protect oversized openings in buildings. With fabricated steel 3V blade type, Model DFD-210 has max size of 128 x 100 in. and 1.5 hr fire resistance rating. Model DFD-230 has max size of 72 x 48 in. with 3 hr fire resistance rating, while Model DFDAF-310, which features fabricated steel airfoil blades, has max size of 128 x 100 in. and 1.5 hr fire resistance rating. With max size of 120 x 96 in., Model DFDAF-330 has 3 hr fire resistance rating. Read More


Motorized Air Damper helps optimize indoor air quality.

August 8, 2013

Available in 5–20 in. sizes, Model TMD520 introduces fresh air into building through air intake damper that is controlled by microprocessor-based ventilation interface. Made of galvanized steel, single-blade damper operates up to 1 in. wc. and features adjustable damper position range stops. Unit is shipped as power open/spring closed but can be field-converted to power close/spring open. Applications include apartment complexes, condos, single family homes, and light commercial dwellings. Read More

HVAC, Mechanical Power Transmission

Carbon-Graphite Bearings operate at high temperatures.

December 3, 2012

FDA approved for use with food/pharmaceuticals, Metcar Bearings are designed for dry running at temperatures from 350–1,000°F in oxidizing atmospheres and 350–6,000°F in non-oxidizing atmospheres. Because bearings rely on graphite for self-lubricating properties, they are dimensionally stable and are not subject to melting, softening, or deformation. Typical applications include continuous dryers, high temperature conveyors, kiln cars, and high temperature ventilation dampers. Read More


Heavy-DutyTornado Dampers prevent ductwork collapse.

October 2, 2012

Designed to protect against tornados and rapid pressure changes, Models HTOD-330 and -331 are double flanged channel frame style backdraft dampers that close, respectively, in same and opposite direction as normal flow. Products install in ductwork or mount to wall near building exterior and allow for air movement during normal weather conditions. Negative pressure caused by tornado causes damper to close, and spring-loaded blades return damper to open position after tornado passes. Read More

HVAC, Fluid & Gas Flow Equipment

Backdraft Dampers remove corrosive fumes.

June 25, 2012

Offered in PVC or CPVC construction, Backdraft Dampers come in 3 flow control types: butterfly for balancing airflow, gravity backflow preventer which closes when air pressure stops, and blast gate for on/off where space constraints exist. Units have flanged, belled, and plain ends, depending upon version. Available in sizes from 4-24 in. diameter, dampers are suited for fume and tank hoods and ventilation systems for electroplaters, manufacturers, and HVAC applications. Read More


Remote Balancing Dampers suit space-constrained applications.

September 30, 2011

Available in 2 models, Remote Balancing Dampers are suitable for applications where tight spaces make it difficult to access and manually adjust damper and balance airflow. Units use standard RJ11 cable that is run to phone jack-style plug. EZ Balance smart controller can then be plugged into jack to regulate damper's blade position and balance system. Single-blade, rectangular Model RDB-10 comes with 9 V actuator kit, while round Model RBDR-50 comes with factory-mounted 9 V actuator. Read More

HVAC, Architectural and Civil Engineering Products

Pneumatic Slide Gates help conserve energy.

June 27, 2011

Operating using compressed air cylinder, Heavy Duty Pneumatic Slide Gates are used to control air flow and conserve energy. Units are used to deliver positive shut-off to service machinery or to divert air. Available in 4-24 in. sizes, Heavy-Duty slide gates are constructed of 10 gauge body with 16 gauge blade. Extra-Heavy Duty models, made from 3/16 in. plate, are also available. Read More

HVAC, Mounting & Attaching Products

HVAC Isolator supports rooftop HVAC installations.

February 1, 2011

Using patented Seicon System®, Seicon HVAC Isolator reduces vibrations emitted from rooftop HVAC installations by more than 85%. Wind-resistant isolator minimizes living area noise and is designed for use with structurally mounted residential HVAC condensers. Unit can be attached to most surfaces and will isolate any HVAC condenser up to 400 lb when used as pair. It can also be used on heavier condensers in greater numbers. Read More

Test & Measuring Instruments, HVAC

Damper measures and regulates airflow volumes.

September 3, 2010

Combining accurate airflow measuring station and low leakage damper into one compact assembly, Air Measuring Damper series measures and regulates airflow volumes to a target set-point. It includes 4 models; AMD-23 with 3 V blade control damper, AMD-33 incorporating fabricated airfoil blade control damper, AMD-42 made of extruded airfoil blade control damper, and AMD-42V having vertical extruded airfoil blade control damper. Series is compatible with various controllers. Read More


Fire Smoke Damper provides pressure rating up to 4 in. w.g.

April 1, 2010

Featuring high-strength steel airfoil-style blade combined with profile frame design, 3 hr rated combination fire smoke damper model FSD-331 operates with velocity ratings up to 4,000 fpm. Class I leakage rated unit is available in vertical mount with maximum size of 120 x 96 in. Read More


Fire Smoke Dampers are designed for easy access.

October 30, 2009

Models GFSD-211 and GFSD-212 are out-of-wall combination fire smoke dampers designed for easy access throughe grille to the damper, closure device, and actuator. Separate compartment houses actuator, allowing for shallow operating depth of 13.5 in. Both models are qualified to velocities up to 2,000 fpm and pressure ratings up to 4 inches wg. Models GFSD-211 and GFSD-212 are available in vertical or horizontal mounts with a maximum size of 48 x 48 in. Read More


Backdraft Dampers are rated for velocities up to 2,000 fpm.

May 7, 2009

Round backdraft damper Model WDR-53 features galvanized steel frame with aluminum blade, while Model SSWDR-53 is constructed with 304 stainless steel frame and blade. They can be installed horizontally for vertical up/down airflow or mounted vertically for horizontal airflow, and offer pressures up to 2 in. wg in diameter sizes from 4-24 in. Both models are available with optional top frame extension. Read More


Hydraulic Dampers feature single or double acting design.

August 1, 2008

Offering 250,000+ cycle life, self-contained hydraulic dampers feature body diameters ranging from 15-40 mm, stroke lengths of up to 800 mm, and adjustable travel speed that remains constant throughout stroke. Variety of end fittings and mounting brackets are available for installation. Units are suited for medical, defense, packaging, bottling, printing, fitness equipment, transportation, lawn equipment, furniture, RV, and amusement industries. Read More


Iris Damper is calibrated for precise airflow measurement.

December 5, 2007

Manufactured of galvanized steel and fitted with neoprene gasket for airtight mounting, Iris Damper uses interlocking steel plates and calibrated control lever to form adjustable aperture. It permits airflow to be adjusted and measured at one location, resulting in reduced field time and accurate air balancing. Available in 10 sizes from 4-32 in. with capacities ranging from 15-20,000 cfm, compact unit controls temperature, humidity, and ventilation rate. Read More


Insulated Control Damper has thermally broken frame.

January 17, 2005

Suited for outdoor air intake systems, Model ICD incorporates damper frame that has 2 thermal breaks with dual polyurethane resin gaps and is insulated on all 4 sides with polystyrene. Blades are thermally broken and filled with polyurethane for insulating characteristics. Product's design reduces transfer of heat or cold and virtually eliminates condensation. Read More


Snap-Fit Rotary Damper aids in opening doors.

October 7, 2004

Available in 20 gf.cm and 40 gf.cm torque variations, RFRT-XXG-CLIP series aids in smooth opening of compartment or door. Snap-in design negates need for separate screws or ultrasonically welding this part. Push and snap-in motion holds damper firmly in place with its fixing wings. Using designated cut out in panel/chassis, damper is pushed into place through panel/chassis, exposing gear to integrate with toothed rack of compartment door. Read More

Material Handling & Storage, HVAC

Tabletop Isolator uses active feedback control system.

August 24, 2004

Available in 4 sizes, Series 8001 Active Electronic Vibration Isolation Platform isolates instruments from 6 translational and rotational modes of vibration. Portable unit features microprocessor control, has natural frequency of less than 1 Hz, and incorporates automatic leveling mechanism. Using active feedback, it damps vibrations from 1.0-1,000 Hz. For vibrations above 1000 Hz, unit provides passive vibration control. Load capacities are 330-600 lb. Read More


Stainless Steel Dampers resist corrosion.

April 15, 2004

Made completely of 316 stainless steel, Severe Environment Dampers are available in more than 20 models, providing fire life safety, control, and backdraft damper functions. Configurations include round, commercial, industrial, dynamic fire, smoke, and fire smoke dampers. Dampers are suited for paper mills, wastewater treatment plants, swimming pools, food processing plants, laboratories, and coastal buildings. Read More


Stainless Steel Damper suits corrosive environments.

November 28, 2003

IRIS-S has interlocking AISI 316 stainless steel plates. Calibrated control lever allows blades to form adjustable aperture, permitting airflow regulation and measurement at one location. Damper measures differential pressure across pressure ports and refers to matching performance curve to determine airflow. Offered in 10 sizes from 4-32 in. with capacities to 20,000 cfm, it has neoprene gasket for airtight mounting. Read More