Airtac GAFR Adjustable Filter Regulator GAFR50020SJNWK
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR50020SJNWK 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
- Drainsemi-auto + manual
- Pressure gaugeNot fitted
- 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 GAFR50020SJNWK
This AirTAC GAFR50020SJNWK is a filter & regulator that combines air filtration and pressure regulation in a single body, eliminating the need for separate components. It handles a 3/4in port and weighs 950 g, making it a substantial unit for machine-level installation.
The unit filters incoming air through a diversion structure that spins out liquid water and solid particles, then regulates outlet pressure to a steady 0.15-0.9 MPa (20-130 psi). It comes with a 5 um element for finer particle capture and a 108 cc condensate bowl that defines the service interval.
Airtac GAFR Adjustable Filter Regulator GAFR50020SJNWK Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR50020SJNWK |
|---|---|
| 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 | Semi-auto drain + manual 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 GAFR50020SJNWK
| 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". |
| (blank) | Drain: Semi-auto drain + manual 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 GAFR50020SJNWK Is Used
Machine Header Feed
Feed a 3/4in header supplying multiple pneumatic actuators on a production machine, where the 5 um element protects sensitive valves from fine particulate.
Instrument Air Branch
Supply a branch line to precision instrumentation that needs clean, regulated air at a stable pressure, with the fine 5 um element reducing particle contamination.
Multi-Station Assembly Line
Regulate air for a multi-station assembly line where consistent pressure is critical, and the 108 cc bowl allows longer intervals between manual drains.
Is the Airtac GAFR Adjustable Filter Regulator GAFR50020SJNWK the Right Air-Prep Unit?
Choose this GAFR500 for 3/4in lines where a 950 g body with a 108 cc drain bowl suits the duty cycle. The PC bowl is the standard build; the semi-auto and manual drains are both fitted. The 5 um element traps finer particles than the standard 40 um, which is better for precision valves but requires more frequent element service. The J code means no mounting bracket is included, so plan for panel mounting or an existing bracket. The N code means no gauge is fitted, but the 1/4in gauge connection is ready for one if you add it later. The K code indicates a reverse-flow (reflux) valve is attached. If your line needs oil downstream, order the matching GAFC500-20 combination instead. Remember that the 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 GAFR50020SJNWK FAQ
The GAFR50020SJNWK has a working pressure range of 0.15-0.9 MPa (20-130 psi), a maximum pressure of 1.0 MPa (145 psi), and a proof pressure of 1.5 MPa (215 psi). Its temperature range is -5 to 70 C. The drain bowl capacity is 108 cc and the unit weighs 950 g.
The K code indicates that a reverse-flow (reflux) valve is fitted to this GAFR50020SJNWK. It is an ordering difference from models without the K code. The catalogue does not specify its function in the available data.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
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