The heart of Bradford White’s Defender Safety System® is the flame arrestor design of the patented ScreenLok® Technology. This precisely engineered and manufactured component is made 304L alloy stainless steel and contains up to eighteen thousand, geometrically oriented louvers. These micro dimensioned louvers increase the velocity of incoming air to the system. If flammable vapors enter this uniquely designed system and are ignited, a vector effect occurs inside of the combustion chamber. The combination of high velocity air entering the chamber and the vector effect caused by combustion will prevent any flames present in the chamber from traveling backwards through the flame arrestor plate and outside of the water heater.
The Bradford White Defender Safety System® maintains outstanding efficiency, a long service life and very low NOx emissions. Best of all, it provides maintenance free operation while meeting the stringent ANSI standard for the affected gas water heaters.
Included on all FVIR compliant models. ScreenLok® is constructed of 304L stainless steel, a non-rusting alloy, for outstanding impact, heat, crack, and corrosion resistance. The ScreenLok® Technology Flame Arrestor was tested in the harshest simulated environment and continued to operate properly over the normal life expectancy of the product.