Airtac GAFR Adjustable Filter Regulator GAFR400N15LNW
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR400N15LNW 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 1/2" 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 size1/2"
- Pressure range0.15 - 0.4 MPa (20 - 58 psi)
- Filtering grade5 µm
- Bowl materialNylon
- Drainsemi-auto + manual
- Pressure gaugeNot fitted
- Weight880 g
About the Airtac GAFR Adjustable Filter Regulator GAFR400N15LNW
The GAFR400N15LNW is a filter and regulator combined in a single body, handling both filtration and pressure control without a separate lubricator. This 1/2in unit operates in the lower pressure band of 0.15-0.4 MPa (20-58 psi) and comes with a 5 um element for finer particle removal.
Its 100 cc nylon condensate bowl captures water and solids separated by the internal diversion structure, while the 880 g body with a 1/4in gauge connection suits fixed installations. The balanced regulator holds the set outlet steady as supply pressure varies, and the included mounting bracket supports the weight securely.
Airtac GAFR Adjustable Filter Regulator GAFR400N15LNW Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR400N15LNW |
|---|---|
| Series | GAFR400 filter & regulator |
| Port size | 1/2" (PT thread) |
| Filtering grade | 5 µm |
| Pressure range | 0.15 - 0.4 MPa (20 - 58 psi) |
| Type | Lower pressure |
| Bowl material | Nylon |
| 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 | 100 cc |
| Bracket | Included |
| Weight | 880 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 GAFR400 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 GAFR400N15LNW
| GAFR400 | GA400 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). |
| 15 | Port size 1/2". This body offers 10 = 3/8", 15 = 1/2". |
| (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). |
| (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 GAFC400-15 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 | GAFR400 · 1/2" · curve to 7000 L/min |
|---|---|
| One size down | GAFR300 |
| One size up | GAFR500 (curve to 8000 L/min) |
| Add a lubricator | GAFC400-15 (F.R.L. combination) |
Where the Airtac GAFR Adjustable Filter Regulator GAFR400N15LNW Is Used
Low-pressure precision fixturing
Feed a clamping fixture or a light press that needs stable 0.15-0.4 MPa air, with the 5 um element protecting fine control valves from particle wear.
Instrument air for test benches
Supply a laboratory test rig or calibration bench where the lower pressure band and finer filtration keep readings consistent without over-pressuring sensitive gauges.
Dedicated machine station
Mount on a single assembly station with a 1/2in feed line, using the 100 cc bowl to collect condensate over longer shifts before manual draining is needed.
Is the Airtac GAFR Adjustable Filter Regulator GAFR400N15LNW the Right Air-Prep Unit?
Choose the GAFR400 body for 1/2in porting with a 100 cc drain bowl, stepping down from the GAFR500's 108 cc bowl or up from the GAFR300's 60 cc bowl. The nylon bowl (N) offers an alternative build to the standard PC, while the 5 um element (W) traps finer particles than the 40 um default for sensitive downstream equipment. This model ships with the semi-auto and manual drains both fitted, the mounting bracket included, and no gauge (N) - the 1/4in gauge connection allows adding one later. The L-type pressure range suits low-pressure applications only. 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 (1/2" 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 100 cc bowl fills.
- check Keep the unit above freezing (-5 to +70 °C, unfreeze).
- check Support the 880 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 GAFC400-15 combination; do not expect an oil mist from this unit.
Airtac GAFR Adjustable Filter Regulator GAFR400N15LNW FAQ
Working pressure range is 0.15-0.4 MPa (20-58 psi), with a maximum supply of 1.0 MPa (145 psi) and proof pressure of 1.5 MPa (215 psi). Operating temperature is -5 to 70 C. The drain bowl holds 100 cc and the unit weighs 880 g, with a 1/4in gauge connection.
The 5 um element (W code) traps significantly finer solid particles than the 40 um default, making it suitable for precision valves or instrument air where smaller contaminants could cause issues. The trade-off is that the finer element will require more frequent servicing or replacement over time.
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Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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