This is a 2″ BSP bung with a vented membrane that works to aerate (lets air in) and deaerate (let air out) IBCs, and comes standard in our 6″ IBC lids, code 500756. Please note that there is no longer an orange mushroom vent in the centre.
Vents (in and out) 120L/hr at 25mbar. If you require a higher flow rate please see code 600867 for the two-way vacuum vent.
