Bubble-tight Isolation Damper

The test set up complies with ASME N509 & N510 1995 (“Testing of Nuclear Air Treatment Systems”). Measurements were taken in general accordance to AMCA 500-D.
Housing leak tested at 3800 Pa with leak rate 0.0005 CFM per cubic foot of housing volume.
Blade and shaft seals tested in the closed position at 2500 Pa, leakage rate < 0.029 CFM per inch of circumference of blade.