- -30%
Winflex - Check valve KO-150 for extractor - 150 mm
CHF4.50
CHF3.15
Without disrupting passive indoor ventilation, this backflow preventer will prevent backflow from your ventilation system. It is made of ABS plastic and the membrane is made of a special lightweight polymer.
-20% | CHF2.80 |
-15% | CHF2.98 |
-10% | CHF3.15 |
-7.5% | CHF3.24 |
-5% | CHF3.33 |
Without disrupting passive indoor ventilation, this backflow preventer prevents backflow from your ventilation system. It is made of ABS plastic and the membrane is made of a special lightweight polymer.
The backflow preventer is mounted on a fan with special fasteners provided on the fan spindle.
D: 125mm
a: 14mm