KOM series

KOM round back valve is especially designed to prevent backdraft. The spring loaded backdraft damper is manufactured of steel with polymeric coating or galvanized steel and contains rubber seal. KOM back valve is installed in ventilation systems and ventilation ducts. It also prevents the entry of birds and other wildlife.

Model D L L1 KOM 100 37/8" 31/8" 43/4" KOM 125 47/8" 315/16" 51/2" KOM 150 57/8" 41/2" 61/8" KOM 200 713/16" 511/16" 75/16" KOM 250 913/16" 61/2" 81/16" KOM 315 123/8" 71/2" 91/16"

Diagramms of Pressure loss