AirTAC Pneumatics
AirTAC GAF Series Air Filters
The AirTAC GAF series is a filter-only compressed air preparation unit that spins out condensate and traps solid grain, spanning five stocked bodies with 1/8 to 1 inch ports.
inventory_2218 models availableSeries Overview
The AirTAC GAF series is a dedicated compressed air filter that separates liquid water and solid particles at the machine inlet. It uses a unique diversion structure to spin the incoming air, throwing heavy moisture and grain into the drain bowl while an HDPE filter core traps fine debris. It cleans the air; it does not regulate pressure or add lubrication.
The series spans five stocked body sizes - GAF200, GAF300, GAF400, GAF500 and GAF600. Port sizes run from 1/8 inch to 1 inch, unit weights scale from 200 g to 1040 g, and drain bowl capacities grow from 25 cc to 205 cc. The catalogue flow curve is plotted to 3000 L/min for the GAF200 and up to 12000 L/min for the GAF600, giving a sizing envelope across the range.
Buyers choose from three drain bowl materials (PC, nylon or metal), two element grades (40 um general purpose or 5 um with the W option), and three drain types (semi-auto with manual, or automatic). Thread options include PT, G and NPT. Because it is a pure filter with no regulator, its flow envelope at a given body size is higher than the matching GAFR filter-regulator.
Typical Applications
Plant Air Inlet Filtration
Installed at the main machine air inlet to strip bulk condensate and pipe scale before it reaches directional valves, protecting downstream pneumatic logic from water damage.
Precision Valve Protection
Fitted with the 5 um (W) HDPE element to capture fine particulates ahead of sensitive directional control valves and small orifice actuators in machining centers.
High-Flow Packaging Lines
Using the GAF600 with a 1 inch port and 205 cc metal bowl to handle high air consumption and heavy condensate loads on continuous motion packaging equipment.
How to Choose the Right Model
Size the body to the machine air demand, not to the existing pipe. The port span runs 1/8 inch on the GAF200 to 1 inch on the GAF600, with the catalogue flow curve plotted from 3000 L/min to 12000 L/min. Undersizing starves downstream equipment. Bowl capacity dictates the service interval: a 25 cc GAF200 bowl needs frequent draining, while a 205 cc GAF600 bowl holds far more condensate. Choose the 5 um (W) element for precision valves, the automatic drain (A) for hard-to-reach locations, and match the thread (PT/G/NPT) to your fittings.
Place the GAF first in the air train, ahead of any regulator or lubricator. Confirm these 5 points before ordering: body size against air demand, port size and thread, element grade (40 or 5 um), bowl material and drain type, and whether to keep the mounting bracket (J omits it). If the line also needs a set pressure, step out to the matching AirTAC GAFR filter-regulator or a separate GAR regulator; if it needs oil mist, step up to a GAFC or GAC unit.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and available mounting space
- ✓ Port / thread type (PT / NPT / G)
- ✓ Sensor / magnet option (-S)?
- ✓ Side load — consider a guided model
Frequently Asked Questions
The series spans five stocked bodies. Port sizes run from 1/8 inch on the GAF200 to 1 inch on the GAF600. Unit weights scale from 200 g to 1040 g, and drain bowl capacities range from 25 cc to 205 cc. The catalogue flow curve is plotted to 3000 L/min for the GAF200 and up to 12000 L/min for the GAF600. These are sizing envelopes, not rated flow figures.
No. The GAF is a filter only. It separates water and solid particles but has no pressure regulator, gauge, or lubricator bowl. If you need a set downstream pressure, use the matching AirTAC GAFR filter-regulator or a separate GAR regulator. If you need oil mist, step up to a GAFC or GAC unit.
The standard 40 um HDPE element is the general-purpose default for typical plant air. The 5 um element (denoted by the W option in the ordering code) traps far finer particles for precision valves or instrument air, but it requires more frequent element service. Confirm exact service intervals from the datasheet.
Drain types include semi-auto with manual drain, or an automatic drain (A). Bowl materials are PC, nylon, or metal, with the GAF600 available in metal only. The automatic drain is ideal for units mounted in awkward locations, and the large bowl capacities (up to 205 cc on the GAF600) extend the time between maintenance cycles.
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