Airtac GAFR Adjustable Filter Regulator GAFR500N20ALNW
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR500N20ALNW 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 materialNylon
- Drainautomatic
- Pressure gaugeNot fitted
- Weight950 g
About the Airtac GAFR Adjustable Filter Regulator GAFR500N20ALNW
The GAFR500N20ALNW is a filter and regulator combined into a single body, eliminating the need for separate units. This 3/4in version handles substantial line flows, with its diversion structure spinning air to separate liquid water and trap solid particles before regulation.
This lower-pressure model regulates from 0.15 to 0.4 MPa (20-58 psi), using a 5 um element for finer filtration. The nylon bowl and automatic drain suit applications where regular manual checks are impractical, while the 950 g weight indicates a unit that needs proper panel mounting rather than pipe support.
Airtac GAFR Adjustable Filter Regulator GAFR500N20ALNW Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR500N20ALNW |
|---|---|
| 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 | 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 | Included |
| 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 GAFR500N20ALNW
| 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. |
| L | Lower pressure type — 0.15 - 0.4 MPa (20 - 58 psi). This body offers Standard (S) or Lower pressure (L). |
| (blank) | Mounting bracket included. |
| 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 GAFR500N20ALNW Is Used
Precision valve control
Feed a bank of precision pneumatic valves that require stable, lower pressure air at 0.15-0.4 MPa, with 5 um filtration protecting sensitive internal components.
Machine tool coolant lines
Supply regulated air to machine tool coolant systems where lower pressure prevents misting, while the automatic drain handles condensate from wet shop air.
Test rig air supply
Provide clean, regulated air at controlled lower pressures for laboratory test fixtures and calibration equipment that cannot tolerate pressure spikes.
Is the Airtac GAFR Adjustable Filter Regulator GAFR500N20ALNW the Right Air-Prep Unit?
Choose this GAFR500 for 3/4in lines needing fine 5 um filtration and a lower 0.15-0.4 MPa (20-58 psi) regulation band. The automatic drain handles condensate without intervention, and the included bracket simplifies mounting. The nylon bowl offers an alternative to PC or metal, and the absence of a gauge means the 1/4in gauge connection is available if you add one later. For lines requiring lubrication downstream, order the matching GAFC500-20 combination instead. With a 1.0 MPa max supply, you have about 0.6 MPa of headroom above the 0.4 MPa regulated ceiling.
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 GAFR500N20ALNW FAQ
This filter & regulator has a 3/4in port, 0.15-0.4 MPa (20-58 psi) pressure range, 1.0 MPa (145 psi) max pressure, 1.5 MPa (215 psi) proof pressure, -5 to 70 C temperature range, 108 cc drain bowl, and weighs 950 g. It uses a 5 um element and has an automatic drain.
The L indicates a lower-pressure regulator type, limited to 0.15-0.4 MPa (20-58 psi) instead of the standard 0.15-0.9 MPa range. This suits applications needing precise low-pressure control, but if your system may require higher pressure later, 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 GAFR500N20ALNW
Send us the quantity, thread type (PT / G / NPT) and destination. We confirm price, stock and lead time — usually within 7-8 hours.