Airtac GAFR Adjustable Filter Regulator GAFR50020ASNW
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR50020ASNW 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 materialPC
- Drainautomatic
- Pressure gaugeNot fitted
- Weight950 g
About the Airtac GAFR Adjustable Filter Regulator GAFR50020ASNW
The GAFR50020ASNW is a filter and regulator combined into a single body, handling both filtration and pressure control in one compact unit. It serves a 3/4in port line, operates from 0.15 to 0.9 MPa (20-130 psi), and comes with a 5 um filter element for fine particulate removal.
This model features an automatic drain that expels condensate without manual intervention, and its 108 cc bowl collects water and solids separated by the internal diversion structure. Weighing 950 g, it is a substantial unit designed for permanent mounting rather than line support, and the balanced regulator mechanism maintains steady outlet pressure as supply varies.
Airtac GAFR Adjustable Filter Regulator GAFR50020ASNW Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR50020ASNW |
|---|---|
| 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 | PC |
| 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 | Included |
| 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 GAFR50020ASNW
| GAFR500 | GA500 series filter & regulator — 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". |
| A | Drain: Automatic drain. |
| S | Standard type — 0.15 - 0.9 MPa (20 - 130 psi). This body offers Standard (S) or Lower pressure (L). |
| (blank) | Mounting bracket included. |
| N | No pressure gauge; 1/4" gauge connection. |
| 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 GAFR50020ASNW 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 precision valves and the automatic drain reduces maintenance stops.
Instrument Air Feed
Supply clean, regulated air to sensitive instrumentation or gauging systems that require finer filtration than standard shop air, with the 108 cc bowl handling condensate from wet lines.
Conveyor Control Cabinet
Mount inside a control cabinet for a long conveyor line, regulating air to solenoid banks and cylinder valves while the automatic drain prevents water buildup in the enclosed space.
Is the Airtac GAFR Adjustable Filter Regulator GAFR50020ASNW the Right Air-Prep Unit?
Choose the GAFR500 for 3/4in port applications requiring up to 0.9 MPa regulated output. The 5 um element traps finer particles than the standard 40 um, making it suitable for precision equipment, though it will need more frequent servicing. The automatic drain handles condensate discharge automatically, ideal for unattended operation, and the included mounting bracket simplifies installation. This model has no gauge fitted, but the 1/4in gauge connection allows adding one if pressure monitoring is needed. If downstream lubrication is required, order the GAFC500-20 combination instead. With a 1.0 MPa max supply, you have about 0.1 MPa above the 0.9 MPa top of the regulated 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 GAFR50020ASNW FAQ
Working pressure range is 0.15-0.9 MPa (20-130 psi), with 1.0 MPa (145 psi) maximum and 1.5 MPa (215 psi) proof pressure. Temperature range is -5 to 70 C. The drain bowl holds 108 cc and the unit weighs 950 g. It has a 3/4in port and a 5 um filter element.
The NW suffix means no gauge is supplied and the element is 5 um instead of the standard 40 um. The gauge connection is 1/4in if you want to add one later. The 5 um element provides finer filtration for sensitive equipment but requires more frequent replacement.
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