Correct Operations of Dip-Tubes/Dispense Heads in IBC's

Make sure that the IBC has sufficient N2/air supply over vent connection

- to avoid damage of IBC by vacuum

- bending or damage/breakage of dip-tube

Reason: IBC's have a tolerance of height of up to ±20mm, because the top is flat and can easily bend down or up, depending on filling medium and temperature. This is not so critical, because the down-forces are small, but a vacuum by lack of N2 supply during chemical withdrawal will force the top bending down and pressure on the dip-tube.

e.g. -10KPa (at 0.1bar under-pressure, achieved by pumping 100L of 1000L out without N2 supply) will cause a force of 10,000KNewton over 1m2 surface area = equivalent to about 1.0 ton force load. This force on a dip-tube will bend or even break the dip-tube in case it is locked in a sump the bottom and decrease the life-time of an IBC.

Example: for typical tolerances of IBC's:

AS QC2 dip-tube: 1028mm -1.0mm (recommended for Rikutec IBC)

(max lenght: 1028mm, min lenght 1027mm)

IBC: 1,030-1,050mm (estimated)

QC2 dip-tubes have a tolerance in length of -1.0mm,

IBC's typical tolerance: ±15mm in height

QC2 Dip-tube flexible bellow makes the dip-tube flexible in length and allows the optimal chemical withdrawal with minimum quantity chemical left.

Tolerance with flexible bellow: length -20mm (flexibility)

(e.g. 1,040mm -20mm)