Airtac GAFR Adjustable Filter Regulator GAFR400N15ASJWK
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR400N15ASJWK 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
- Drainautomatic
- Pressure gaugeCircular, MPa / psi
- Weight880 g
About the Airtac GAFR Adjustable Filter Regulator GAFR400N15ASJWK
The GAFR400N15ASJWK is a single-body filter & regulator: incoming air is spun through a diversion structure so water and solid particles drop into the 100 cc drain bowl, then a balanced regulator sets a steady outlet pressure. There is no lubricator and no oil bowl; the one bowl on this unit is the condensate bowl. If your line needs oil mist downstream, the matching GAFC400-15 combination adds a lubricator to the same body and port.
This 1/2" port model is regulated from 0.15 to 0.9 MPa (20-130 psi) and carries a fine 5 um element for precision valves and instrument circuits. The automatic drain empties the bowl without anyone opening it, and the pressed-in self-locking knob keeps the setting from creeping under vibration. A circular gauge with MPa/psi scale is fitted, the flow curve is plotted to 7000 L/min at 0.7 MPa inlet, and the unit weighs 880 g, so it should sit on a panel or frame rather than hang on its tubing.
Airtac GAFR Adjustable Filter Regulator GAFR400N15ASJWK Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR400N15ASJWK |
|---|---|
| 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 | 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 | 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 GAFR400N15ASJWK
| 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". |
| A | Drain: Automatic 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. |
| K | Reverse-flow (reflux) valve attached. |
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 GAFR400N15ASJWK Is Used
Precision machining cells
The 5 um element and steady regulated output suit spindle clamps, tool changers and measuring fixtures on a 1/2" drop from the shop main.
Packaging machine air supplies
An automatic drain keeps the 100 cc bowl clear on lines that run shifts without an operator walking past, while the gauge lets setters read MPa or psi directly.
Multi-station assembly benches
One 1/2" unit can feed a header serving several stations; at 880 g it needs a proper frame or panel mount, not support from the tubing.
Is the Airtac GAFR Adjustable Filter Regulator GAFR400N15ASJWK the Right Air-Prep Unit?
Choose this code when you want a 1/2" filter & regulator with fine 5 um filtration, an automatic drain for unattended or wet lines, and the factory gauge in MPa/psi. The J in the code means no mounting bracket is supplied, so plan a panel cutout or reuse an existing bracket. The nylon bowl is a build choice for the surrounding environment; confirm compatibility if the atmosphere is aggressive, since AirTAC publishes no chemical or impact data for it. The K code adds a reverse-flow (reflux) valve, drawn as a separate symbol; treat it purely as an ordering difference. Thread is PT, which pairs with the MPa/psi gauge scale. If your machine could ever need more than 0.4 MPa, stay with this standard type rather than an L version, and remember 1.0 MPa max supply leaves about 0.1 MPa above the 0.9 MPa top of the range, so plan a supply near 1.0 MPa for a 0.9 MPa setting.
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 GAFR400N15ASJWK FAQ
It is a filter & regulator in one body with a 1/2" port. Working range is 0.15-0.9 MPa (20-130 psi), maximum pressure is 1.0 MPa (145 psi) and proof pressure is 1.5 MPa (215 psi). Temperature range is -5 to 70 C and the unit must not freeze. The condensate bowl holds 100 cc, the element grade is 5 um, and the unit weighs 880 g.
The J code omits the bracket. Buyers who panel-mount the unit or already have a suitable bracket order this version; every other GAFR400 variant ships with the bracket included. At 880 g the unit still needs a rigid mounting, so make sure your panel or existing bracket carries the weight.
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