Air-Filter-regulators - Futura line - FS | Hafner

Hafner Futura Line FS Filter-Regulators

The Hafner KFRG Futura line FS units are compressed air preparation assemblies integrating a filter and pressure regulator in a single housing, without lubricator. These are installed upstream of pneumatic valves, manifolds, cylinders, and instrumentation where stable supply pressure and particulate retention from the air network are required.

Technical Data

• Filter element: 5 μm
• Outlet pressure adjustment: 0.5…8 bar
• Inlet pressure: 1.5…12 bar for FS-0, 1.5…16 bar for FS-1 to FS-4
• Port sizes: G 1/4” to G 1”
• Flow rates: 1000 to 13000 l/min, depending on size
• Drain options: HA semi-automatic or AM automatic

Available Versions

• KFRG-014/8 G: G 1/4”, 1000 l/min, FS-0
• KFRG-114/8 G / KFRG-138/8 G: G 1/4” or G 3/8”, 2200 l/min, FS-1
• KFRG-238/8 G / KFRG-212/8 G: G 3/8” or G 1/2”, 4500 l/min, FS-2
• KFRG-434/8 G / KFRG-41/8 G: G 3/4” or G 1”, 13000 l/min, FS-4

Drain Selection: HA vs AM

The HA version is specified where regular manual inspection and draining of the bowl by maintenance personnel is feasible. The AM version is used in continuous operation lines or locations where condensate must be removed automatically without manual intervention.

Selection Criteria

Selection is based on required flow rate, allowable pressure drop, port thread size, downstream pressure, and 5 μm filtration requirement. For panels with multiple electropneumatic valves, sizing must consider total instantaneous air consumption, not just average demand.

Maintenance

Routine checks include filter element condition, drain operation, output pressure stability, thread leakage, and water accumulation in the bowl.