Futura line | FS - Accessories - Filters | Hafner

Hafner Futura line FS Filters

The KFIL and KAFI filters from the Futura line FS series are designed for installation in compressed air lines upstream of regulators, valves, manifolds, and pneumatic actuators. Their primary function is to retain particulates, condensate, and, in the case of activated carbon variants, residual oil from the air supply network.

Filtration Variants

• KFIL HA: 5 μm filter element with semi-automatic drain. Operating pressure: 1.5–16 bar (FS-1 to FS-4), 1.5–12 bar (mini FS-0).
• KFIL AM: 5 μm filter element with automatic drain. Recommended for continuous operation or installations with limited access.
• KAFI: Activated carbon filter for residual oil removal to 0.005 mg/m³. Pressure range: 0–16 bar (standard), 0–12 bar (mini version).

Sizes and Flow Rates

Available connections: G 1/4” to G 1”. Typical flow rates for KFIL filters: 1000 l/min (FS-0), 2200–2400 l/min (FS-1), 3500 l/min (FS-2), 7800 l/min (FS-4). KAFI activated carbon filters: 1100–6000 l/min depending on size.

Selection Criteria

Selection should be based on:

• Required flow rate and permissible pressure drop
• Unit size: FS-0, FS-1, FS-2, FS-4
• Filtration grade: 5 μm or activated carbon
• Semi-automatic or automatic drain configuration
• Oil carryover limits for downstream instrumentation, valves, or process requirements

Maintenance

Periodic inspection should include filter element loading, drain operation, water accumulation, pressure drop, and seal integrity. Activated carbon filters must be replaced before media saturation, especially when protecting air instrumentation or clean process applications.