ITEM 41.66.00 – VACUUM EXTERNAL BREATHER VENT FOR POWDER MATERIALS

Breather devices that protect plant from negative pressure. Suitable for unloading by gravity of tank for powder material transport. Devices are closed in inactivity state.

If tank internal pressure falls below of calibration pressure, device opens and plant is ventilated until calibration pressure.

Antivacuum devices are closed when atmospheric pressure increase, so don’t protect plant from overpressures.