Airtac GAFR Adjustable Filter Regulator GAFR500C20ASJW
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR500C20ASJW 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 5 µm filter element and regulates 0.15 - 0.9 MPa (20 - 130 psi). It has no lubricator, so it adds no oil to the airflow.
- TypeFilter & regulator
- Port size3/4"
- Pressure range0.15 - 0.9 MPa (20 - 130 psi)
- Filtering grade5 µm
- Bowl materialMetal
- Drainautomatic
- Pressure gaugeCircular, MPa / psi
- Weight950 g
About the Airtac GAFR Adjustable Filter Regulator GAFR500C20ASJW
The GAFR500C20ASJW is a genuine AirTAC filter and regulator combined into a single body, eliminating the need for separate GAF and GAR units. This 3/4in port model handles a standard 0.15-0.9 MPa (20-130 psi) range and comes with a 5 um element for finer particle removal.
The metal bowl collects condensate and solids separated by the internal diversion structure. With an automatic drain, this 950 g unit is built for continuous operation where manual draining is impractical. The circular gauge with MPa/psi scale is fitted for direct pressure monitoring.
Airtac GAFR Adjustable Filter Regulator GAFR500C20ASJW Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR500C20ASJW |
|---|---|
| Series | GAFR500 filter & regulator |
| Port size | 3/4" (PT thread) |
| Filtering grade | 5 µm |
| Pressure range | 0.15 - 0.9 MPa (20 - 130 psi) |
| Type | Standard |
| 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 GAFR500C20ASJW
| 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. |
| S | Standard type — 0.15 - 0.9 MPa (20 - 130 psi). This body offers Standard (S) or Lower pressure (L). |
| J | No bracket (J) — supplied without the mounting bracket. |
| (blank) | Circular pressure gauge fitted. |
| W | Filtering grade 5 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 GAFR500C20ASJW Is Used
Machine tool header
Feed a 3/4in header supplying multiple pneumatic actuators on a CNC machine or press, where the 5 um element protects sensitive valves from fine wear particles.
Instrument air station
Provide filtered, regulated air to gauges and measurement equipment on a production line, with the automatic drain handling condensate from humid compressor air.
Assembly line zone
Regulate air for a section of automated assembly conveyors, where the 108 cc bowl and automatic drain reduce maintenance stops compared to smaller filter units.
Is the Airtac GAFR Adjustable Filter Regulator GAFR500C20ASJW the Right Air-Prep Unit?
This GAFR500 body with 3/4in port sits above the GAFR400 (3/8in-1/2in, 100 cc bowl) and below the GAFR600 (3/4in-1in, 205 cc bowl, 1880 g). The 108 cc drain bowl requires less frequent attention than the GAFR400's 100 cc, while the 8000 L/min flow envelope at 0.7 MPa inlet suits medium-sized machine headers. The metal bowl (C) is a build choice for demanding environments, though all materials share the same 1.0 MPa max pressure and -5 to 70 C range. The automatic drain (A) handles wet lines without manual intervention. The 5 um element (W) traps finer particles than the standard 40 um, ideal for precision valves, but will need more frequent service. The J code means no mounting bracket is included, so plan for panel mounting or an existing bracket. The PT thread provides the MPa/psi gauge scale. If lubrication is needed downstream, order the matching GAFC500-20 combination instead. Note that 1.0 MPa max supply leaves about 0.1 MPa above the 0.9 MPa top of the range.
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 GAFR500C20ASJW FAQ
This filter & regulator has a 3/4in port, working pressure range of 0.15-0.9 MPa (20-130 psi), maximum pressure of 1.0 MPa (145 psi), and proof pressure of 1.5 MPa (215 psi). Operating temperature is -5 to 70 C. The drain bowl holds 108 cc and the unit weighs 950 g. It uses a 5 um filter element and has an automatic drain.
The J code in GAFR500C20ASJW means the mounting bracket is omitted. This is for installations using an existing bracket or a panel-mount configuration. The 950 g weight means it should not be supported by the tubing alone; proper mounting is required.
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