Airtac GAFR Adjustable Filter Regulator GAFR500C20ALJ
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR500C20ALJ is a genuine two-in-one filter & regulator — a diversion-type water/particulate filter and a balanced pressure regulator built into ONE body. It has 3/4" ports, a 40 µm filter element and regulates 0.15 - 0.4 MPa (20 - 58 psi). It has no lubricator, so it adds no oil to the airflow.
- TypeFilter & regulator
- Port size3/4"
- Pressure range0.15 - 0.4 MPa (20 - 58 psi)
- Filtering grade40 µm
- Bowl materialMetal
- Drainautomatic
- Pressure gaugeCircular, MPa / psi
- Weight950 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 GAFR Adjustable Filter Regulator GAFR500C20ALJ
The GAFR500C20ALJ is a filter and pressure regulator combined into a single body, eliminating the need for separate GAF and GAR units. This 3/4in model handles a lower pressure band of 0.15-0.4 MPa (20-58 psi) and uses a 40 um element to strain solids and spun-out water into its 108 cc metal condensate bowl.
Its balanced regulator mechanism keeps the outlet steady as inlet pressure shifts, while the pressed-in self-locking knob resists drift from vibration. With a 950 g mass, this unit demands a proper panel or frame mount rather than support from the tubing alone, and the fitted circular gauge reads in MPa/psi.
Airtac GAFR Adjustable Filter Regulator GAFR500C20ALJ Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR500C20ALJ |
|---|---|
| Series | GAFR500 filter & regulator |
| Port size | 3/4" (PT thread) |
| Filtering grade | 40 µm |
| Pressure range | 0.15 - 0.4 MPa (20 - 58 psi) |
| Type | Lower pressure |
| Bowl material | Metal |
| Drain type | Automatic drain |
| Fluid | Air |
|---|---|
| Max. pressure | 1.0 MPa (145 psi) |
| Proof pressure | 1.5 MPa (215 psi) |
| Temperature range | -5 to +70 °C (unfreeze) |
| Capacity of drain bowl | 108 cc |
| Bracket | Not included (J) |
| Weight | 950 g |
Specifications follow the official AirTAC GAFR catalogue (pages 235-236). Air must not freeze in the unit. The fitted circular gauge reads in MPa / psi, set by the PT thread code. This unit filters and regulates only; it does not add lubrication.
Model Code: Airtac GAFR Adjustable Filter Regulator GAFR500C20ALJ
| GAFR500 | GA500 series filter & regulator — sets the port range, drain-bowl capacity and weight. |
|---|---|
| C | Bowl material: Metal. Available on this body: PC (blank), Metal (C), Nylon (N). |
| 20 | Port size 3/4". This body offers 20 = 3/4". |
| A | Drain: Automatic drain. |
| L | Lower pressure type — 0.15 - 0.4 MPa (20 - 58 psi). This body offers Standard (S) or Lower pressure (L). |
| J | No bracket (J) — supplied without the mounting bracket. |
| (blank) | Circular pressure gauge fitted. |
| (blank) | Filtering grade 40 µm. |
| (blank) | PT thread; gauge scale MPa / psi. |
| (blank) | No reverse-flow valve. |
The filter and the regulator are ONE body here — there is no separate GAF filter or GAR regulator part to assemble. Need lubrication downstream too? Add a lubricator by ordering the matching GAFC500-20 F.R.L. combination instead.
Size Class & Flow Envelope
- GAFR2001/8"-1/4" · 2000 L/min
- GAFR3001/4"-1/2" · 3500 L/min
- GAFR4003/8"-1/2" · 7000 L/min
- GAFR5003/4" · 8000 L/min
- GAFR6003/4"-1" · 12000 L/min
Figures are the end of the flow curve plotted in the AirTAC catalogue at 0.7 MPa inlet pressure — a sizing envelope for comparing bodies, not a rated flow. Read the catalogue curve for a real duty point. Outlet pressure falls as flow rises, so size a body with headroom above your peak demand.
| This model | GAFR500 · 3/4" · curve to 8000 L/min |
|---|---|
| One size down | GAFR400 |
| One size up | GAFR600 (curve to 12000 L/min) |
| Add a lubricator | GAFC500-20 (F.R.L. combination) |
Where the Airtac GAFR Adjustable Filter Regulator GAFR500C20ALJ Is Used
Machine header feed
Supply a 3/4in header feeding multiple pneumatic actuators on a production machine, where the lower pressure range protects sensitive tooling.
Precision assembly station
Regulate air for a precision assembly station that requires a stable, low-pressure supply to avoid over-force on delicate components.
Test rig air supply
Provide clean, regulated air to a test rig with a 3/4in inlet, where the automatic drain keeps the bowl from filling during long test cycles.
Is the Airtac GAFR Adjustable Filter Regulator GAFR500C20ALJ the Right Air-Prep Unit?
Choose this GAFR500 for a 3/4in line where the lower 0.15-0.4 MPa (20-58 psi) range is sufficient; if the machine may ever need more pressure, the standard S type is the correct pick. The metal bowl suits demanding environments, and the automatic drain handles unattended operation or wet lines without manual intervention. This model ships without a mounting bracket (J), so plan for a panel mount or existing bracket, and the 40 um element is the standard grade for general shop air. The PT thread carries an MPa/psi gauge scale, and no reverse-flow valve is fitted. If oil is needed downstream, order the matching GAFC500-20 combination instead. With a 1.0 MPa max supply, you have about 0.6 MPa of headroom above this unit's 0.4 MPa regulated ceiling.
Quick checklist
- ✓ Body size for your peak flow (3/4" here)
- ✓ Standard 0.9 MPa or lower-pressure 0.4 MPa
- ✓ Bowl material: PC (blank), Metal (C), Nylon (N)
- ✓ Drain: semi-auto + manual, or automatic
- ✓ Element 40 µm or 5 µm
- ✓ Bracket kept or removed (J); add a lubricator = GAFC
Installation & Maintenance Notes
- check Install with the airflow arrow: IN to OUT, gauge/knob accessible.
- check Keep inlet pressure at or below 1.0 MPa (145 psi).
- check Set pressure with the pressed-in self-locking knob; pull to adjust, press to lock.
- check Drain condensate before the 108 cc bowl fills.
- check Keep the unit above freezing (-5 to +70 °C, unfreeze).
- check Support the 950 g unit on its bracket, not on the tubing.
This is a filter and regulator only — it delivers filtered, pressure-set air with no added oil. If a downstream tool needs lubrication, add a separate lubricator or order the GAFC500-20 combination; do not expect an oil mist from this unit.
Airtac GAFR Adjustable Filter Regulator GAFR500C20ALJ FAQ
The GAFR500C20ALJ is a filter & regulator with a 3/4in port, working pressure range of 0.15-0.4 MPa (20-58 psi), maximum pressure of 1.0 MPa (145 psi), and proof pressure of 1.5 MPa (215 psi). It operates from -5 to 70 C, has a 108 cc drain bowl, and weighs 950 g. The unit features a 40 um element and an automatic drain.
The 'L' code designates the lower-pressure type, which tops out at 0.4 MPa (58 psi) instead of the standard 0.9 MPa. The 'J' code means the mounting bracket is not included, so you must use a panel mount or an existing bracket. This model also has a metal bowl and an automatic drain for wet or unattended lines.
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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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