Putsch Nerva. Filtros de bolsa

Bag filtration works by the principle of pressure filtration. The substance to be filtered is pumped from the inside out within the bag filter, in such a way that the impurities remain in the bag and the clean substance is evacuated through the bottom of the filter holder.

These systems consist of just three elements: the casing (pressure vessel), the support basket and the bag.

The areas of application of Bag Filter systems are the following:

  • Chemical and petrochemical industry
  • Automobile industry
  • High-purity water treatment
  • Power plants
  • Food and drink industry
  • Photographic laboratories
  • Cosmetic industry
  • Pharmaceutical industry

Types of Bag Filter Holders

BG-BB series Filter Holder

PX 100 Series Filter Holder for Bag or Cartridge

BG-PP Series Filter Holder for Bag

BG Series Filter Holder

SBF Series Filter Holder

Multiple Filter Holder

The filter holders are designed and manufactured according to P. E. D. 97/23CE. On request: Inspection by TÜV, ASME / U-Stamp Section VIII, Div. 1, Lloyd’s Register of Shipping, Standard – Ö, Service de Mines, SQL, Bureau Vertias, Germanischer Lloyd, TTK, UDT, Ispesl, Det Norske Veritas

Types of Bag Filter

Why Putsch® Bag Filters are perfect for heavy-duty applications:

  • Long life
  • Also suitable for filtering high-viscosity liquids 
  • High flow rate
  • High chemical and thermal persistence 
  • Easy to use


Filtration medium: Punched felt: Polypropylene or Polyester
Fabric: monofilament nylon
Filtration porosity: 1 µm a 1500 µm
Sizes: Length:
229 mm
381 mm
419 mm
813 mm

ø (neck)
102 mm
102 mm
178 mm
178 mm

Ring: Galvanized steel, stainless steel or polypropylene


For further information you can download the Putsch® catalogues (3123 Bag cartridge filter holders, or catalogue 3132 General Filter Programme)