Airtac GAFR Adjustable Filter Regulator GAFR500C20ASJN
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR500C20ASJN 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 gaugeNot fitted
- Weight950 g
About the Airtac GAFR Adjustable Filter Regulator GAFR500C20ASJN
The GAFR500C20ASJN is a filter and regulator combined into a single body, cleaning incoming air and holding a steady outlet pressure without needing a separate filter plus regulator pair. This 3/4in version operates from 0.15 to 0.9 MPa (20-130 psi) with a 40 um element, and its metal bowl collects condensate.
A balanced regulator mechanism keeps the set pressure stable as supply varies, while the pressed-in self-locking knob resists drift from vibration. The diversion structure spins the air to separate liquid water and solid particles into the 108 cc drain bowl, and the automatic drain clears it without manual attention.
Airtac GAFR Adjustable Filter Regulator GAFR500C20ASJN Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR500C20ASJN |
|---|---|
| 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. No gauge is supplied with this model — the gauge connection on a GAFR500 is 1/4" if you add one. This unit filters and regulates only; it does not add lubrication.
Model Code: Airtac GAFR Adjustable Filter Regulator GAFR500C20ASJN
| 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. |
| N | No pressure gauge; 1/4" gauge connection. |
| (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 GAFR500C20ASJN Is Used
Machine header supply
Feed a 3/4in header serving multiple pneumatic stations on a production line, with the automatic drain handling condensate from continuous operation.
Multi-station assembly
Supply filtered, regulated air to several actuators on an assembly cell, keeping pressure stable as different stations cycle.
Plant air drop
Mount at a plant air drop to protect downstream valves and cylinders, with the metal bowl resisting rough shop floor conditions.
Is the Airtac GAFR Adjustable Filter Regulator GAFR500C20ASJN the Right Air-Prep Unit?
Choose this GAFR500 for a 3/4in line where the 950 g weight and 108 cc bowl indicate a mid-large size class needing proper mounting. The metal bowl suits demanding environments, and the automatic drain handles wet or unattended lines. This model omits the bracket (J) and gauge (N), so plan for panel mounting and add a gauge to the 1/4in connection if you need to read pressure. The standard S type covers 0.15-0.9 MPa, and PT threads with MPa/psi scale are fitted. If oil is needed downstream, order the matching GAFC500-20 combination instead. Max supply 1.0 MPa 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 GAFR500C20ASJN FAQ
Working pressure range is 0.15-0.9 MPa (20-130 psi), max pressure 1.0 MPa (145 psi), proof pressure 1.5 MPa (215 psi), temperature range -5 to 70 C. It has a 108 cc drain bowl, weighs 950 g, and uses a 40 um element with a 3/4in port.
The N after the port means no gauge is supplied; the 1/4in gauge connection is there if you add one later. The J code omits the mounting bracket, so this unit is intended for panel mounting or use with an existing bracket.
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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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