Airtac GAFR Adjustable Filter Regulator GAFR500N20ASJW
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR500N20ASJW 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 materialNylon
- 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 GAFR500N20ASJW
The GAFR500N20ASJW is a single-body filter and regulator: incoming air is spun through a diversion structure so liquid water and solid particles drop into the bowl, then a balanced mechanism sets a steady outlet pressure between 0.15 and 0.9 MPa (20-130 psi). With a 3/4in port and a fine 5 um element, it suits precision valves and instrument-air take-offs on larger lines. There is no lubricator and no oil bowl here; the only bowl is the 108 cc condensate bowl, and it empties itself through the automatic drain.
This 950 g unit is a heavy body that needs a proper panel or frame mount, and the J code means no mounting bracket is supplied, so plan your own fixing. The fitted circular gauge reads in MPa and psi on the PT thread, and the pressed-in self-locking knob holds the setting against vibration. Rated from -5 to 70 C, with a 1.0 MPa (145 psi) maximum and a 1.5 MPa (215 psi) proof pressure.
Airtac GAFR Adjustable Filter Regulator GAFR500N20ASJW Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR500N20ASJW |
|---|---|
| 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 | Nylon |
| 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 GAFR500N20ASJW
| GAFR500 | GA500 series filter & regulator — sets the port range, drain-bowl capacity and weight. |
|---|---|
| N | Bowl material: Nylon. 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 GAFR500N20ASJW Is Used
Machine air header
A 3/4in feed to a machine's distribution header, where the 8000 L/min plotted envelope at 0.7 MPa inlet covers several downstream take-offs and the automatic drain copes with a wet compressor room.
Instrument air take-off
The 5 um element strips fine particles before sensitive gauges, transducers and pilot valves, while the balanced regulator keeps their supply steady as plant pressure wanders.
Packaging line supply
A packaging line running many small cylinders from one 3/4in feed benefits from the 108 cc automatic-drain bowl, which cuts manual draining rounds on a long production shift.
Is the Airtac GAFR Adjustable Filter Regulator GAFR500N20ASJW the Right Air-Prep Unit?
Choose this model when a 3/4in line needs both clean air and a regulated supply in one body: the 5 um element catches far finer particles than the standard 40 um grade, which matters for precision valves, though the element will need attention more often. The nylon bowl is a build choice for the environment; confirm compatibility if surroundings are aggressive, since the common ratings (1.0 MPa max, -5 to 70 C) are identical across PC, nylon and metal bowls. The automatic drain suits unattended or wet lines where nobody walks past to bleed condensate. If downstream cylinders or tools need oil mist, order the matching GAFC500-20 combination instead, because this unit adds no lubrication. Note that the K option would add a reverse-flow valve if you ever need one. Sizing up or down: the curve here is plotted to 8000 L/min at 0.7 MPa inlet, a step above the 7000 L/min envelope of the GAFR400 at the same 0.7 MPa inlet. Remember that 1.0 MPa max supply leaves about 0.1 MPa above the 0.9 MPa top of the range, so plan a supply near 1.0 MPa if you intend to set 0.9 MPa out.
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 GAFR500N20ASJW FAQ
It is a filter and regulator in one body with a 3/4in port. Working range is 0.15-0.9 MPa (20-130 psi), maximum pressure 1.0 MPa (145 psi), proof pressure 1.5 MPa (215 psi), and the temperature range is -5 to 70 C. The condensate bowl holds 108 cc and the unit weighs 950 g. The element grade is 5 um, the drain is automatic, the bowl is nylon, and the fitted gauge reads MPa and psi.
The J code in GAFR500N20ASJW deletes the bracket. At 950 g this body must still be solidly fixed, so it is intended for panel mounting or a line where a bracket already exists. Order a code without the J if you want the bracket included.
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