Airtac GAFR Adjustable Filter Regulator GAFR400N15SJW
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR400N15SJW 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 - 0.9 MPa (20 - 130 psi). It has no lubricator, so it adds no oil to the airflow.
- TypeFilter & regulator
- Port size1/2"
- Pressure range0.15 - 0.9 MPa (20 - 130 psi)
- Filtering grade5 µm
- Bowl materialNylon
- Drainsemi-auto + manual
- Pressure gaugeCircular, MPa / psi
- Weight880 g
About the Airtac GAFR Adjustable Filter Regulator GAFR400N15SJW
The GAFR400N15SJW is a filter & regulator that combines air filtration and pressure regulation into a single compact body. This 1/2in unit handles 0.15-0.9 MPa (20-130 psi) and uses a 5 um element to trap fine particles before the balanced regulator stabilizes outlet pressure.
Its nylon bowl holds 100 cc of condensate, and the diversion structure spins incoming air to separate liquid water and solid debris. At 880 g, this mid-size unit suits fixed installations where a proper panel mount replaces tubing support. The circular gauge with MPa/psi scale is fitted for direct pressure reading.
Airtac GAFR Adjustable Filter Regulator GAFR400N15SJW Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR400N15SJW |
|---|---|
| Series | GAFR400 filter & regulator |
| Port size | 1/2" (PT thread) |
| Filtering grade | 5 µm |
| Pressure range | 0.15 - 0.9 MPa (20 - 130 psi) |
| Type | Standard |
| 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 | Not included (J) |
| Weight | 880 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 GAFR400N15SJW
| 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. |
| 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. |
| (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 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 GAFR400N15SJW Is Used
Precision valve control
Feed a bank of precision pneumatic valves that require consistent 0.15-0.9 MPa supply. The 5 um element protects sensitive internal orifices from fine abrasive particles.
Machine tool circuits
Supply a medium-sized machine tool with filtered, regulated air. The 100 cc nylon bowl handles typical condensate buildup between maintenance shifts.
Test bench setup
Build a test bench with the 1/2in port and 7000 L/min envelope at 0.7 MPa inlet. The semi-auto drain gives manual control while the auto function handles routine purging.
Is the Airtac GAFR Adjustable Filter Regulator GAFR400N15SJW the Right Air-Prep Unit?
Choose the GAFR400 body for 1/2in porting with a 7000 L/min flow envelope plotted at 0.7 MPa inlet, stepping up from the GAFR300's 3500 L/min curve. The nylon bowl (N) offers an alternative build to the standard PC version, while the 5 um element (W) captures finer particles than the 40 um default for sensitive downstream equipment. This model ships with both semi-auto and manual drains, omits the mounting bracket (J), and includes the circular gauge reading MPa/psi via PT threads. For lines needing oil downstream, order the matching GAFC400-15 combination instead. 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 (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 GAFR400N15SJW FAQ
Working pressure range is 0.15-0.9 MPa (20-130 psi), with 1.0 MPa (145 psi) maximum and 1.5 MPa (215 psi) proof pressure. Temperature rating is -5 to 70 C. The drain bowl holds 100 cc and the unit weighs 880 g. It uses a 5 um filter element.
The J code omits the bracket for installations using existing panel mounts or custom frames. The 880 g body needs proper structural support rather than tubing alone. If you need the standard bracket, order without the J suffix.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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Most inquiries answered within 7-8 hours.
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