Airtac GAF Filter GAF50020J
The AirTAC Airtac GAF Filter GAF50020J is a genuine compressed-air filter. Its diversion structure spins the air to separate liquid water and trap solid particles down to 40 µm, protecting downstream valves and tools. It has 3/4" ports and a 108 cc drain bowl. It is a filter only — it does not regulate or set pressure.
- TypeAir filter
- Port size3/4"
- Filtering grade40 µm
- Pressure range0.15 - 0.9 MPa
- Bowl materialPC
- Drainsemi-auto + manual
- Drain bowl108 cc
- Weight680 g
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac GAF Filter GAF50020J
The GAF50020J is a filter-only unit that spins incoming air to throw liquid water and solid particles into its 108 cc drain bowl, while the HDPE element traps fine grain. It cleans the air for downstream valves and cylinders; it does not regulate pressure and has no gauge.
This model has a 3/4in port, a 40 um filter element, and a PC bowl. It ships without the mounting bracket (J code), so plan for a panel mount or an existing bracket. The unit weighs 680 g and its flow curve is plotted to 9000 L/min for sizing against smaller or larger bodies.
Airtac GAF Filter GAF50020J Technical Specifications
| Model | Airtac GAF Filter GAF50020J |
|---|---|
| Series | GAF500 air filter |
| Port size | 3/4" (PT thread) |
| Filtering grade | 40 µm |
| Pressure range | 0.15 - 0.9 MPa (20 - 130 psi) |
| Bowl material | PC |
| Drain type | Semi-auto drain + manual drain |
| Bracket | Not included (J) |
| Fluid | Air |
|---|---|
| Proof pressure | 1.5 MPa (215 psi) |
| Temperature range | -5 to +70 °C (unfreeze) |
| Capacity of drain bowl | 108 cc |
| Element | HDPE filter core |
| Weight | 680 g |
Specifications follow the official AirTAC GAF catalogue (pages 225-226). Air must not freeze in the unit. This is a filter only — it separates water and solid particles but does not set or hold a downstream pressure. To regulate pressure as well, use the matching GAFR500 filter-regulator.
Model Code: Airtac GAF Filter GAF50020J
| GAF500 | GA500 series air filter — sets the port range, drain-bowl capacity and weight. |
|---|---|
| (blank) | Bowl material: PC. Available on this body: PC (blank), Metal (C), Nylon (N). |
| 20 | Port size 3/4". This body offers 20 = 3/4". |
| (blank) | Drain: Semi-auto drain + manual drain. |
| J | No bracket (J) — supplied without the mounting bracket. |
| (blank) | Filtering grade 40 µm. |
| (blank) | PT port thread. |
A GAF has no regulator and no pressure gauge — there is no type, gauge or reflux code. Need to regulate pressure too? The matching GAFR500-20 is the same filter with a built-in regulator.
Size Class & Flow Envelope
- GAF2001/8"-1/4" · 3000 L/min
- GAF3001/4"-1/2" · 6000 L/min
- GAF4003/8"-1/2" · 8000 L/min
- GAF5003/4" · 9000 L/min
- GAF6003/4"-1" · 12000 L/min
Figures are the end of the flow curve plotted in the AirTAC catalogue — a sizing envelope for comparing bodies, not a rated flow. Read the catalogue curve for a real duty point. A filter this size drops less pressure at flow than the same-body GAFR filter-regulator, so match it to your peak demand.
| This model | GAF500 · 3/4" · curve to 9000 L/min |
|---|---|
| One size down | GAF400 |
| One size up | GAF600 (curve to 12000 L/min) |
| Add regulation | GAFR500-20 (filter + regulator) |
Where the Airtac GAF Filter GAF50020J Is Used
Machine Tool Lines
Feed a 3/4in header supplying multiple pneumatic cylinders on a CNC machine or press. The 108 cc bowl handles condensate from continuous operation, and the 40 um element protects sensitive directional valves.
Assembly Station Banks
Protect a bank of air tools and actuators on an assembly line. The 3/4in port supports higher flow to several stations, while the semi-auto drain lets an operator quickly purge water during shift changes.
Plant Air Drop Legs
Install at the base of a vertical drop leg feeding a workbench. The 680 g unit needs a secure panel mount since the J code omits the bracket, and the 40 um element keeps hand tools running clean.
Is the Airtac GAF Filter GAF50020J the Right Filter?
Choose the GAF500 body when a 3/4in port and a 108 cc drain bowl fit your line; it sits between the GAF400 (100 cc bowl, 8000 L/min curve) and the GAF600 (205 cc bowl, 12000 L/min curve). The PC bowl is the standard build, while the J code omits the bracket for panel-mount installations. The 40 um element handles general shop air, and the PT thread standard matches common local fittings. Both a semi-auto and a manual drain are fitted for flexible condensate removal. If you need a set pressure, use the matching GAFR500-20 filter-regulator instead. The GAF500's 108 cc drain bowl holds about 1.08x the condensate of the GAF400's 100 cc bowl, so service intervals are nearly identical.
Quick checklist
- ✓ Body size for your peak flow (3/4" here)
- ✓ Element 40 µm (general) or 5 µm (fine)
- ✓ Bowl material: PC (blank), Metal (C), Nylon (N)
- ✓ Drain: semi-auto + manual, or automatic
- ✓ Bracket kept or removed (J)
- ✓ Need pressure control too? Use GAFR500
Installation & Maintenance Notes
- check Install with the airflow arrow: IN to OUT, bowl accessible.
- check Place the filter FIRST in the air-prep train, ahead of any regulator or lubricator.
- check Keep pressure at or below the 1.5 MPa (215 psi) proof limit.
- check Drain condensate before the 108 cc bowl fills.
- check Keep the unit above freezing (-5 to +70 °C, unfreeze).
- check Support the 680 g unit on its bracket, not on the tubing.
This is a filter only — it removes water and solid particles but adds no pressure control and no lubrication. Add a GAR regulator, a GAL lubricator, or step up to the GAFR500-20 filter-regulator as your air-prep needs grow.
Airtac GAF Filter GAF50020J FAQ
The GAF50020J is a filter-only unit with a 40 um HDPE element, a 3/4in PT port, and a 108 cc PC drain bowl. It weighs 680 g and its flow curve is plotted to 9000 L/min. The working pressure range is 0.15-0.9 MPa (20-130 psi), with a proof pressure of 1.5 MPa (215 psi). Operating temperature is -5 to 70 C (must not freeze). It has both semi-auto and manual drains, and no mounting bracket.
The J code means the mounting bracket is omitted. This suits panel-mount installations or lines where an existing bracket is already in place. The 680 g unit must be supported by a proper frame or panel, not by the tubing. If you need the standard bracket, order the GAF50020 without the J code.
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Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
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