Monday, January 14, 2013

HVAC Manufacturing Using Nitrogen Gas

HVAC manufacturing involves processes that are sensitive to oxygen exposure - particularly the processes of brazing and leak testing.

Why Is Nitrogen Gas Important for HVAC Manufacturing?

Brazing is a heat treating method of joining two pieces of metal together by melting a metallic filler to form a strong and resilient bond while preserving the existing metal components.  Nitrogen is an important component during the brazing of copper coil for HVAC equipment.  Applying a steady stream of N2 gas during the brazing process prevents oxidation caused by exposure to oxygen.  Oxidation compromises the integrity of the bond and the metals, affecting the overall performance and life expectancy of the system.

Leak testing for refrigerant is a mandatory process for all HVAC systems with a charge of between 3 and 30kg (once a year) or more than 30kg (twice a year) and is regulated by the Environmental Protection Agency (EPA).  Nitrogen is the preferred gas for pressurized leak testing due to its inert nature and its ability to eliminate the presence of oxygen that can allow moisture to form that might cause oxidation and corrosion of the metal piping.

What is a Reliable and Economical Source for Continuous Nitrogen Gas Flow?

The need for Nitrogen gas for both brazing and leak testing during HVAC Manufacturing requires a steady, continuous flow without the possibility for running out during the session.  The best solution for this is to utilize a Nitrogen Generator that produces high purity N2 gas by separating the Nitrogen molecules from the atmosphere and storing them in an attached tank.  Nitrogen gas is available on demand, directly at the point of process.

South-Tek Systems is a leading manufacturer of Nitrogen Generating equipment, including the N2 GEN Series for industrial applications such as HVAC Manufacturing, brazing, and pressure leak testing.  Contact the experts at South-Tek today to learn how their Nitrogen Generators can benefit your operation: 888-526-6284.


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