Bag filter unit GeoFilter GF4

dustfor welding fumesfume

Overview
The GeoFilter GF4 is a galvanised coarse bag filter engineered for the removal of dust and fumes generated by welding and grinding operations. It provides up to 3,000 m³/h airflow, supports 3–5 extraction arms (depending on arm type) and features a manually cleanable bag system with front-access collection chamber for straightforward maintenance.

Key benefits

• Fully galvanised steel housing for corrosion resistance in industrial environments.
• Effective coarse filtration of welding and grinding dust and fumes.
• High airflow capacity up to 3,000 m³/h suitable for multi-arm extraction setups.
• Interchangeable bag filters in G4, M5 or F9 grades for flexible filtration requirements.
• Manual compressed-air cleaning to extend filter service life and reduce replacement frequency.
• Front-access collection chamber simplifies dust removal and inspection.
• Optional manometer and filter guard for monitoring pressure drop and filter status.

Product information
The GF4 uses replaceable bag filters available in G4, M5 and F9 grades, delivering filtration efficiencies from approximately 86% (G4) up to ~99% (F9) for fine particles down to ~0.3 µm. The bag design allows manual cleaning with compressed air to prolong operating life. Optional accessories such as a manometer enable pressure-drop monitoring; a filter guard provides a visual indicator for replacement. The unit is suitable for both indoor and outdoor installation.

Technical data (table)
Material: Galvanised steel
Installation: Indoor / Outdoor
Max. air volume: 3,000 m³/h
Pressure drop: 250 Pa at 2,000 m³/h
Connection (inlet): ø400 mm
Connection (outlet): ø400 mm
Dimensions (LxWxH): 645 x 645 x 1,075 mm
Weight: 40 kg

Technical specifications

• Housing: fully galvanised steel
• Airflow capacity: up to 3,000 m³/h
• Supports: 3–5 extraction arms (typical, application dependent)
• Filter options: bag filters in G4, M5, F9
• Filtration efficiency: ~86% (G4) up to ~99% (F9) for particles down to ~0.3 µm
• Cleaning: manual cleaning system using compressed air
• Collection: front-access collection chamber for dust
• Monitoring options: optional manometer and filter guard
• Connections: inlet/outlet ø400 mm
• Dimensions: 645 x 645 x 1,075 mm
• Weight: 40 kg