Classic-line | A - Accessories - Distribution units | Hafner

Hafner Classic-line Type A Distribution Units

Hafner Classic-line A DIS distribution units are used in air preparation assemblies to provide auxiliary air supply or to distribute compressed air before or after individual FRL units. They are mechanically integrated into the Classic-line assembly with filters, pressure regulators, filter-regulators, and lubricators.

Available Sizes

• DIS-0: mini distributor, size A-0.
• DIS-1: distributor, size A-1.
• DIS-2: distributor, size A-2.
• DIS-3: distributor, size A-3.

Function in Pneumatic Circuits

Distribution units are installed where additional air outlets are required for pressure gauges, pressure switches, auxiliary circuits, bypass lines, or separate low-consumption feeds. Installation position determines whether the outlet provides filtered, regulated, or lubricated air.

Selection Criteria

Selection is based on:

• unit size A-0 to A-3,
• compatibility with existing Classic-line assemblies,
• installation position within the FRL sequence,
• requirement for outlet before or after the pressure regulator,
• available panel space,
• mechanical compatibility with end plates and coupling kits.

Applications

Used in pneumatic panels, machine lines, service stations, auxiliary air supplies, control circuits, and applications requiring organized air take-offs without additional tees in the piping.

Maintenance

Maintenance checks include verifying connection tightness, correct coupling kit torque, unit alignment, and absence of mechanical stress from piping. Incorrect installation may supply auxiliary circuits with improper pressure or inadequately processed air.