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This GFB Mach 2 atmosphere conversion kit converts T9103 and T9133 Mach 2 valves from recirculating to atmosphere venting. The upgrade kit includes the trumpet, spring, and plug needed to change the valve’s venting method, producing an atmospheric release rather than recirculation. It’s offered as a spare or upgrade for owners who prefer the audible vent-to-atmosphere characteristic on those Mach 2 variants.
GFB Mach 2 Atmosphere Conversion Kit-Changes T9103 or T9133 from Recir to Atmosphere
