Air Control Dampers & Louvers

Applied Systems is pleased to represent a few of the premium damper manufacturers in the industry, Arrow United, Nailor and Tamco. From high quality aluminum extruded blades, to the UL rated fire & smoke dampers, Applied Systems has a competitive offering, with multiple manufacturing locations and production programs to meets your needs and time frame.

Control Dampers

Nailor manufactures a comprehensive range of control dampers suitable for all commercial HVAC applications, from the cost effective single blade 1870 manual balancing damper to the industry leading ultra-low leakage, premium quality, AMCA Certified 2000 Series airfoil control damper.

Whether the requirement is for a large multiple-section tight shut off outside air intake damper or a small branch duct round balancing damper, we have the model to fit your needs.

Combination Fire/Smoke Dampers

These dampers are designed for applications where building codes require both a fire damper (for the protection of ductwork penetrations in walls or floors that have a fire resistance rating) and a smoke damper (for operational smoke control in static or dynamic smoke management systems).

Curtain Fire Dampers

The function of a Fire Damper is to close automatically upon detection of heat, in order to protect the integrity of a fire barrier and maintain its fire resistance rating where penetrated by HVAC ductwork or equipment. Failure of these dampers to fully close in the event of a fire may lead to a disastrous loss of life and/or property.

Smoke Dampers

For applications where building codes require a leakage rated (smoke) damper as part of a static smoke control or dynamic smoke management system. Smoke dampers are intended: (1) to restrict the spread of smoke in HVAC systems that are designed to be automatically closed down in the event of a fire or (2) to control the movement of smoke within a building when the HVAC system is operational in engineered smoke control systems.

In September 1983, Underwriters Laboratories issued the first edition of Standard UL555S to evaluate the leakage characteristics and operational reliability of smoke dampers together with a qualified actuator for use in engineered smoke control systems. The current fourth edition was issued June 1999.

UL qualification and leakage classification of a damper design require the testing of a minimum of three sizes of each design, representative of the range of sizes available. The configurations must be a minimum width x maximum height, maximum width x minimum height and maximum width x maximum height. The performance of the worst damper determines the damper/design class.

Fast Fact: Nailor has the largest UL rated fire damper assembly in the industry.

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