EN 556 Filler Breather Plastic, with Open / Closed Position

Screw in lower part using an Allen® wrench.

Insert filter.

Place cap over filter onto lower part. The
recesses of the lower part allow assembly of the cap in the proper and accurate position.

Ventilation / open position:
Turn cap clockwise (CLOSE arrow) up to the first indexing position. Marker 1 is located above the
reference pointer. The indexing mechanism
prevents the cap from inadvertently loosening.

Closed position:
Continue to turn the cap clockwise (CLOSE
arrow) until marker 0 is located above the
reference pointer. Also in this position, an
indexing mechanism prevents inadvertently
loosening.

To return to the ventilation / open position, to change the filter or to disassemble the unit, turn the cap counter-clockwise indicated by the OPEN arrow.

Air flow rate [l/min] as a function of pressure difference [l/min] between container and ambient air.