Airtac GAFR Adjustable Filter Regulator GAFR500C20ASJNWK
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR500C20ASJNWK 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 gaugeNot fitted
- Weight950 g
About the Airtac GAFR Adjustable Filter Regulator GAFR500C20ASJNWK
This AirTAC GAFR500C20ASJNWK is a filter and pressure regulator combined into a single body, eliminating the need for separate units. It handles a 3/4in port and delivers a regulated range of 0.15-0.9 MPa (20-130 psi) while filtering to 5 um.
The metal bowl collects condensate and the automatic drain clears it without manual attention. Weighing 950 g, this unit is built for a machine header or multi-station line, not for support from tubing alone. A 1/4in gauge connection is available if a pressure readout is added later.
Airtac GAFR Adjustable Filter Regulator GAFR500C20ASJNWK Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR500C20ASJNWK |
|---|---|
| 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. 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 GAFR500C20ASJNWK
| 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. |
| W | Filtering grade 5 µm. |
| (blank) | PT thread; gauge scale MPa / psi. |
| K | Reverse-flow (reflux) valve attached. |
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 GAFR500C20ASJNWK Is Used
Machine Header Feed
Feed a multi-station assembly machine header with filtered, regulated air at 3/4in, handling up to 0.9 MPa for consistent actuator performance.
Instrument Air Supply
The 5 um element protects precision valves and instruments from fine particles, while the automatic drain keeps the line clear in continuous production.
Process Line Regulation
Mount this 950 g unit on a frame to supply a stable 0.15-0.9 MPa to a process line, with the metal bowl handling condensate in a warm environment.
Is the Airtac GAFR Adjustable Filter Regulator GAFR500C20ASJNWK the Right Air-Prep Unit?
Choose the GAFR500 body when you need a 3/4in port and a flow envelope plotted to 8000 L/min at 0.7 MPa inlet; step up to the GAFR600 for a 1in port and a 12000 L/min envelope. The metal bowl suits industrial environments, while the 5 um element traps finer particles for sensitive equipment. This model has an automatic drain, no mounting bracket, and no gauge fitted, so plan for panel mounting and adding a gauge via the 1/4in connection if needed. The PT thread and standard pressure type cover most general air systems, and the reverse-flow valve is included as an ordering option. If oil is needed downstream, order the matching GAFC500-20 combination instead. 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 GAFR500C20ASJNWK FAQ
The GAFR500C20ASJNWK is a filter & regulator with a 3/4in port, working pressure range of 0.15-0.9 MPa (20-130 psi), max pressure of 1.0 MPa (145 psi), and proof pressure of 1.5 MPa (215 psi). It operates in -5 to 70 C temperatures, has a 108 cc drain bowl, and weighs 950 g. The filter grade is 5 um, and it features an automatic drain.
The 'N' after the port code means no gauge is supplied, so you cannot read the set pressure without adding one via the 1/4in gauge connection. The 'J' means the mounting bracket is omitted, so you must use a panel mount or an existing bracket to secure the 950 g unit.
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