Airtac GAFR Adjustable Filter Regulator GAFR400N15SNW
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR400N15SNW 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 gaugeNot fitted
- Weight880 g
About the Airtac GAFR Adjustable Filter Regulator GAFR400N15SNW
The GAFR400N15SNW is a filter & regulator with both functions sharing one body, so it replaces a separate GAF filter plus a GAR regulator and cuts the number of joints to seal. It handles a 1/2in port, works from 0.15 to 0.9 MPa (20-130 psi), and comes with a 5 um element for finer particle removal.
Its nylon bowl collects condensate and solids in a 100 cc drain bowl, and the 880 g mass signals a unit that needs a proper panel or frame mount rather than support from the tubing. The balanced regulator holds the outlet steady as supply pressure varies, and the pressed-in self-locking knob resists drift from vibration.
Airtac GAFR Adjustable Filter Regulator GAFR400N15SNW Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR400N15SNW |
|---|---|
| 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 | 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 GAFR400N15SNW
| 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). |
| (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 GAFR400N15SNW Is Used
Precision valve control
Feed a bank of precision pneumatic valves on a machining cell where the 5 um element protects fine internal passages and the balanced regulator holds a steady setpoint.
Machine header supply
Supply a 1/2in header on a packaging machine with filtered, regulated air, using the 100 cc bowl to cut drain frequency compared to smaller bodies.
Test bench air
Provide clean, regulated air to a lab test bench where instrument-grade filtration matters and the 7000 L/min envelope at 0.7 MPa inlet covers multiple test stations.
Is the Airtac GAFR Adjustable Filter Regulator GAFR400N15SNW the Right Air-Prep Unit?
Choose this GAFR400 body for a 1/2in line where the flow envelope is plotted to 7000 L/min at 0.7 MPa inlet, stepping up from the GAFR300's 3500 L/min envelope when you need more capacity. The nylon bowl is a build choice with the same 1.0 MPa max and -5 to 70 C rating as PC or metal, so confirm compatibility for aggressive surroundings. This model has the semi-auto plus manual drain (both fitted), the mounting bracket included, and no gauge, so the 1/4in gauge connection is ready if you add one later. The 5 um element traps far finer particles than the standard 40 um for precision valves or instrument air, at the cost of more frequent element service. If the line needs oil downstream, order the matching GAFC400-15 combination instead. 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 GAFR400N15SNW FAQ
Working pressure range is 0.15-0.9 MPa (20-130 psi), max pressure is 1.0 MPa (145 psi), proof pressure is 1.5 MPa (215 psi), temperature range is -5 to 70 C, drain bowl capacity is 100 cc, and weight is 880 g. It has a 1/2in port, 5 um element, nylon bowl, and semi-auto plus manual drain.
The N after the port code means no gauge is supplied, so you cannot read the set pressure without adding one. The gauge connection on the GAFR400 body is 1/4in, which is the size you would use if you fit a gauge later.
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