Depureco FILTERING PRE-SEPARATOR 450 WB

A pre-separator is a passive filter unit placed between the suction point and the main filter unit. Its role is to **catch the coarse particles first**, so the main filter unit (e.g. DV AIR or DV AIR WB) only has to handle the fine residual dust. This gives three concrete benefits: (1) the main filter's cartridges last longer (less load), (2) pressure drop in the plant is lower and more constant (less pulsejet cleaning needed), and (3) the bulk of the dust is already collected at the pre-separator level where it is easier to handle. The catalogue is explicit: pre-separators **must be mandatorily combined with a suction unit** (CVS Z22 or CVS ROOTS Z22).

Depureco FILTERING PRE-SEPARATOR 450 WB is a passive pre-separator with star filter class M (24,000 cm² antistatic polyester). It has an **integrated 65 L painted steel container** where the collected dust falls directly -- no separate discharge system needed, the customer empties the container manually or via an automatic option. The vacuum unit's air flow enters via the Ø70 mm inlet (on the vacuum unit side) or Ø80 mm (on the vacuum spot side) and passes through the star filter area. SP-Reverse jet pulsejet cleaning is **optional** on this model.

Star filter is a **star-folded filter geometry** -- the filter media is folded in a star shape around a central channel. It gives a filter-surface-to-volume ratio between a flat-bag solution and a cartridge filter. Star filters are typically less expensive and suited to less aggressive dust types, but have lower surface area than a comparable cartridge filter and are therefore more sensitive to rising pressure drop if not cleaned adequately. The catalogue specifies SP-Reverse jet pulsejet cleaning as **optional** at this size -- for continuous operation with high dust volumes we recommend the option to keep the filter clean.

No. The catalogue lists this family of pre-separators WITHOUT ATEX marking -- they are thus non-ATEX and must not be used in explosive atmospheres (Zone 20/21/22). If your plant requires ATEX operation, the pre-separator solution must be specifically engineered (and combined with DV AIR Z22 / DV AIR WB Z22 as the main filter). The antistatic polyester media reduces electrostatic buildup but does not replace ATEX type approval.

The recommended matches are the CVS Z22 range (side-channel blower) and the CVS ROOTS Z22 range (Roots pump) -- these are the same two vacuum units that DV AIR and DV AIR WB are sized for. Choice of vacuum unit depends on vacuum needs, plant length and duty profile. We help with sizing based on pipe lengths, take-off points and dust characteristics. Note that pre-separators are placed **upstream** of the main filter unit, so they share the vacuum unit's flow and vacuum with the main filter -- the sizing must account for the combined pressure drop.

The unit is delivered as a complete module on a fixed frame. The customer must ensure: (1) installation space with ceiling height for 1514 mm (footprint 450 x 450 mm); (2) connection on the vacuum unit side (Ø70 mm) and on the vacuum spot side (Ø80 mm); (3) access below the container for emptying the 65 L integrated container; (4) compressed air supply (typically 5-6 bar) to the SP-Reverse jet cleaning system; (5) correct mechanical anchoring and signage (not ATEX-approved); and (6) planned access to the filter inspection door for filter checks and replacement.

Yes. We offer both installation and commissioning of central filter solutions and mobile systems. For pre-separators the installation includes: matching with vacuum unit and main filter unit, connection of container-handling plan, compressed-air supply for SP cleaning, and commissioning. We also offer service agreements with planned filter inspections, filter replacement and spare-parts access. See 'About Particulair' for geographic coverage.