Airtac GAFR Adjustable Filter Regulator GAFR50020LJNW
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR50020LJNW 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
- 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 GAFR50020LJNW
The GAFR50020LJNW is a filter and regulator combined into a single body, saving rail space and reducing potential leak points compared to separate units. It handles a 3/4in port with a 108 cc condensate bowl, weighing 950 g, and uses a 5 um element for fine filtration.
This lower-pressure model operates from 0.15 to 0.4 MPa (20-58 psi), with a maximum supply of 1.0 MPa (145 psi). The diversion structure spins incoming air to separate liquid water and solid particles into the bowl, while the balanced regulator maintains a steady outlet pressure as supply varies.
Airtac GAFR Adjustable Filter Regulator GAFR50020LJNW Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR50020LJNW |
|---|---|
| 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 | 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 GAFR50020LJNW
| 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. |
| 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. |
| 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 GAFR50020LJNW Is Used
Precision valve control
Feed a bank of precision pneumatic valves on a machining center where consistent low pressure is critical and fine 5 um filtration protects tight clearances.
Assembly line workstations
Supply a multi-station assembly line with regulated air at 0.15-0.4 MPa, using the semi-auto drain for scheduled maintenance in a clean factory environment.
Test rigs and lab equipment
Provide stable low-pressure air to test fixtures or lab equipment that require a clean, regulated supply without the need for a bracket in a fixed panel setup.
Is the Airtac GAFR Adjustable Filter Regulator GAFR50020LJNW the Right Air-Prep Unit?
Choose this GAFR500 for a 3/4in line where a compact, single-body filter-regulator is needed; the 950 g weight and 108 cc bowl indicate a unit that requires proper mounting, not support from tubing. The PC bowl suits general-purpose use, while the 5 um element traps finer particles for sensitive equipment, and the semi-auto plus manual drain handles routine maintenance. This model omits the bracket (J) and gauge (N), so plan for panel mounting and add a gauge via the 1/4in connection if needed. The lower-pressure L type tops out at 0.4 MPa, so if your machine may need more, select a standard S version instead. For lubrication downstream, order the matching GAFC500-20 combination rather than expecting this unit to add oil. 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 GAFR50020LJNW FAQ
The GAFR50020LJNW is a filter & regulator with a 3/4in port, working pressure range of 0.15-0.4 MPa (20-58 psi), maximum pressure of 1.0 MPa (145 psi), and proof pressure of 1.5 MPa (215 psi). It operates in temperatures from -5 to 70 C, has a 108 cc drain bowl, and weighs 950 g. The unit comes with a 5 um element and semi-auto plus manual drain.
The J code means the mounting bracket is omitted for installations using existing brackets or panel mounts, and the N code means no gauge is supplied. The gauge connection is 1/4in if you need to add one later. This allows for a more compact or customized installation where these accessories are not required.
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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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