Results for: damper

Bubble Tight Industrial Damper

In today’s world of particulate matter, harmful chemicals, and noxious gases; bubble-tight dampers are playing a more important role than ever.  At most with bubble-tight dampers, you want to ensure they are properly built and tested before they leave the factory to be installed on a critical project.

Each bubble tight damper is manufactured in our ISO 9001 certified facility as well EB Air test bubble-tight dampers to the strictest standards. Every damper we manufacture is tested to the AMCA Standard 500D requirements, which also meets ASME N509 test standards for nuclear air and gas treatment.

EB Air Bubble Tight Damper – Testing Tightness Per The Standard

The Standard model AMCA 500D, allows for a 1/16-inch bubble to form in one second, or a 1/4-inch bubble to form in 60 seconds. Prior to testing the damper, the damper is cycled open and closed a minimum of 10 times to properly set the seals.

To perform accurate testing, a bubble tight damper is attached to the test chamber and secured to make an airtight seal against the opening.  Thereafter pressure is applied on the concave side of the damper inside the test chamber.

While testing, we over pressurize the system by a minimum of 10% to ensure a reasonable margin of safety. Once the damper is pressurized, a commercially available soap and water solution is applied to test all the potential leak paths.

Also, we apply the solution around the seal perimeter where the dish comes in contact with the damper frame. Other possible leak paths include: the dish bracket area of the dish, the tandem seal used to secure shaft and hold the dish assembly. Once complete with concave side of the damper, the outside areas are verified as well – which includes frame welding, shaft penetration and welded threaded bolt locations.

Both inside and outside testing of the damper is carried out with the chamber, and the damper is also flipped over and verified for bubble tightness in the opposite direction. Upon completion of the test, a report is filled out and attached to the damper for shipment. Read more.


Profile EB Air Control Inc. was incorporated to providing highest quality solutions for HVAC and related industries with strong characteristics towards design and technology for “indoor air comfort and quality”. With a combined market presence of over 27 years, EB Air is poised to handling projects that demands highest quality performance and solution. EB Air

Small Duct Opening PSD

During pandemic times, it is utmost that proper air circulation is maintained in critical facilities especially hospitals, surgical and isolation rooms where separation is maintained from undue infection being spilled out and mixed with outside air causing airborne contaminants to spread. Most times in HVAC field improper dampers are being used to seal off ductworks

Importance of Robust HVAC System

It has just been over a year since the start of the pandemic that practically shut down many cities including Toronto. The COVID-19 has grammatically shifted and changed working norms as assessments are being done by building owners, landlords to make their properties safe, lucrative, and energized places to work hence they are appealing enough

EB Air Venturi Valve with upgraded Belimo BACnet controls package

A Venturi Air Valve (VAV) has a curved body that works as a valve seat and a cone that moves in and out of the throat of the Venturi to restrict airflow. When used with an appropriate controller, the Venturi Air Valve can precisely modulate airflow in a closed-loop control application, accuracy depends mainly on

Prevention of Cross Contamination and contaminants spread

At this point of time, when the world is dealing with a coronavirus (COVID-19) pandemic, proper and effective health facility management has become crucial. Improper isolation and lack of ventilation can even make the situation worse by accelerating the spread of any airborne disease more rapidly. The affected patients need to be isolated immediately to

Controlling Cross Contamination – Isolation and Containment

It is increasingly becoming important worldwide as well mandate under critical working environment to prevent mixing or contact of bio-contaminants or two types of air resulting contamination of one by the other. Especially when the world is plagued by viruses, airborne germs, and other harmful factors, it is even more meaningful to having space properly

Air Mixing Mechanism in HVAC Systems

In the current age of global warming, extreme temperature conditions have become the new normal. Hot places are becoming hotter and more humid, and cold places are getting cooler and freezing. Under such circumstances, an HVAC (Heating, Ventilating, and Air Conditioning) system for organizations, residential projects, vehicles, and hotels becomes a necessity than a luxury.

About Floor mounted Induction Unit

Floor Mounted Induction Units for New Buildings Modern-day architectural buildings are designed keeping in mind the installation of efficient heating and cooling systems as per the seasonal demands. The uses of floor mounted Induction unit can be found, in commercial buildings like schools, hospitals, offices, and shopping malls and even residential units. Giving in to the


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