KOM U series

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

Diagramms of Pressure loss