Airtac GAFR Adjustable Filter Regulator GAFR50020ALJW
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR50020ALJW 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 - 0.4 MPa (20 - 58 psi). It has no lubricator, so it adds no oil to the airflow.
- TypeFilter & regulator
- Port size3/4"
- Pressure range0.15 - 0.4 MPa (20 - 58 psi)
- Filtering grade5 µm
- Bowl materialPC
- Drainautomatic
- Pressure gaugeCircular, MPa / psi
- Weight950 g
About the Airtac GAFR Adjustable Filter Regulator GAFR50020ALJW
The GAFR50020ALJW is a filter and regulator combined into a single body, so incoming air is spun to separate liquid water and trap solid particles before a balanced regulator sets a steady outlet pressure. This 3/4in unit operates in the lower pressure band of 0.15-0.4 MPa (20-58 psi) and uses a 5 um element for finer filtration.
Because the filter and regulator share one housing, this single component replaces what would otherwise be two separate units, reducing potential leak points and saving space on the rail. The 108 cc condensate bowl collects what the diversion structure removes, and the automatic drain clears it without operator intervention.
Airtac GAFR Adjustable Filter Regulator GAFR50020ALJW Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR50020ALJW |
|---|---|
| Series | GAFR500 filter & regulator |
| Port size | 3/4" (PT thread) |
| Filtering grade | 5 µm |
| Pressure range | 0.15 - 0.4 MPa (20 - 58 psi) |
| Type | Lower pressure |
| 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 | 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 GAFR50020ALJW
| 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. |
| L | Lower pressure type — 0.15 - 0.4 MPa (20 - 58 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 GAFR50020ALJW Is Used
Machine tool header
Feed a 3/4in header supplying multiple machining stations where consistent lower pressure protects precision spindles and the 5 um element guards fine orifices.
Instrument air drops
Supply pneumatic controllers and transducers that need clean, regulated air below 0.4 MPa; the automatic drain keeps the 108 cc bowl from flooding on humid production floors.
Multi-zone conveyor system
Regulate several conveyor brake or stop cylinders from one point, with the lower pressure range preventing over-force on lightweight package handling equipment.
Is the Airtac GAFR Adjustable Filter Regulator GAFR50020ALJW the Right Air-Prep Unit?
Choose the GAFR500 body when your line needs 3/4in ports and a flow envelope plotted to 8000 L/min at 0.7 MPa inlet; step down to the GAFR400 for 1/2in ports with a 7000 L/min curve. The PC bowl suits general shop air, while the 5 um element traps finer particles for sensitive valves. This model has an automatic drain for wet or unattended lines, no mounting bracket (J), and a fitted circular gauge with MPa/psi scale. The L type tops out at 0.4 MPa, so if the machine may ever need more pressure, select the standard S type instead. For lines that need lubrication downstream, order the matching GAFC500-20 combination rather than this unit. 1.0 MPa max supply leaves about 0.6 MPa above the 0.4 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 GAFR50020ALJW FAQ
This filter & regulator has a 3/4in port, operates from 0.15-0.4 MPa (20-58 psi), with a 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 uses a 5 um element and has an automatic drain.
The L type limits regulation to 0.15-0.4 MPa for applications needing gentle, consistent pressure. The J code omits the mounting bracket, so you must use an existing bracket or panel mount. If your system may require up to 0.9 MPa, choose the standard S type instead.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC Air-Preparation Units
Request a Quote for Airtac GAFR Adjustable Filter Regulator GAFR50020ALJW
Send us the quantity, thread type (PT / G / NPT) and destination. We confirm price, stock and lead time — usually within 7-8 hours.