Airtac GAFR Adjustable Filter Regulator GAFR500C20ASJ
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR500C20ASJ 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 - 0.9 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 grade40 µm
- Bowl materialMetal
- Drainautomatic
- Pressure gaugeCircular, MPa / psi
- Weight950 g
About the Airtac GAFR Adjustable Filter Regulator GAFR500C20ASJ
The GAFR500C20ASJ is a filter and regulator combined into a single body, so it cleans incoming air and stabilizes outlet pressure without needing separate units. This 3/4in version handles 0.15-0.9 MPa (20-130 psi) and uses a 40 um element to trap particles while the diversion structure spins out liquid water.
Its 108 cc metal condensate bowl and automatic drain make it a low-maintenance choice for continuous operation. Weighing 950 g, this unit is built for permanent mounting on a frame or panel rather than support from tubing alone.
Airtac GAFR Adjustable Filter Regulator GAFR500C20ASJ Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR500C20ASJ |
|---|---|
| Series | GAFR500 filter & regulator |
| Port size | 3/4" (PT thread) |
| Filtering grade | 40 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 GAFR500C20ASJ
| 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. |
| (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 GAFR500C20ASJ Is Used
Machine tool headers
Feed a 3/4in header supplying multiple pneumatic actuators on a machining center. The 108 cc bowl and automatic drain handle condensate from continuous shifts without operator intervention.
Assembly line stations
Regulate air for conveyor diverters and stop gates. The 950 g body mounts securely to a frame, while the 0.15-0.9 MPa range covers typical cylinder operating pressures.
Packaging equipment
Stabilize pressure for labeling and carton-forming machines that need consistent force. The 40 um element protects sensitive valves, and the metal bowl stands up to washdown areas.
Is the Airtac GAFR Adjustable Filter Regulator GAFR500C20ASJ the Right Air-Prep Unit?
Choose this GAFR500 when you need 3/4in ports and a 950 g body that fits mid-size machine headers. The metal bowl suits demanding environments, while the automatic drain removes condensate without manual attention. This model has no mounting bracket (J code), so plan for panel mounting or an existing bracket. The standard pressure type covers 0.15-0.9 MPa, the 40 um element is the default grade, and the fitted circular gauge reads in MPa/psi. For lines needing lubrication downstream, order the matching GAFC500-20 combination instead. A 1.0 MPa max supply leaves about 0.1 MPa above the 0.9 MPa top of the range, so keep inlet pressure near the maximum to reach full output.
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 GAFR500C20ASJ FAQ
Working pressure is 0.15-0.9 MPa (20-130 psi). Maximum pressure is 1.0 MPa (145 psi) and proof pressure is 1.5 MPa (215 psi). Temperature range is -5 to 70 C. The drain bowl holds 108 cc and the unit weighs 950 g with a 3/4in port.
The J code omits the bracket for installations using existing panel mounts or custom frames. This 950 g unit needs solid support, so confirm your mounting method before installation. The bracket is included on standard GAFR500 models without the J code.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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Most inquiries answered within 7-8 hours.
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