Airtac GAFR Adjustable Filter Regulator GAFR400N15ASJK
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR400N15ASJK 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 40 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 grade40 µm
- Bowl materialNylon
- Drainautomatic
- Pressure gaugeCircular, MPa / psi
- Weight880 g
About the Airtac GAFR Adjustable Filter Regulator GAFR400N15ASJK
The GAFR400N15ASJK is a filter and regulator combined into a single body, eliminating the need for separate filter and regulator units. This 1/2in port model handles standard pressure ranges of 0.15-0.9 MPa (20-130 psi) with a 40 um filter element, and its nylon bowl resists corrosion in demanding environments.
The diversion structure inside spins incoming air to separate liquid water and solid particles into the 100 cc drain bowl, while the balanced, self-locking regulator maintains a steady outlet pressure even as supply pressure fluctuates. This unit does not include a lubricator; for oiled downstream air, pair it with the GAFC400-15 combination.
Airtac GAFR Adjustable Filter Regulator GAFR400N15ASJK Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR400N15ASJK |
|---|---|
| Series | GAFR400 filter & regulator |
| Port size | 1/2" (PT thread) |
| Filtering grade | 40 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 GAFR400N15ASJK
| 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. |
| (blank) | Filtering grade 40 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 GAFR400N15ASJK Is Used
Precision machining centers
Feed a consistent 0.15-0.9 MPa supply to CNC tool changers and clamping fixtures, where the balanced regulator holds set pressure steady despite line fluctuations.
Assembly line automation
Power multi-station pick-and-place units on a medium-capacity line; the 1/2in port and 7000 L/min envelope handle several actuators simultaneously.
Laboratory test rigs
Supply clean, regulated air to pneumatic test fixtures and calibration equipment, where the 40 um element protects sensitive valves from particulate contamination.
Is the Airtac GAFR Adjustable Filter Regulator GAFR400N15ASJK the Right Air-Prep Unit?
Choose the GAFR400 body for medium-flow applications; its 7000 L/min flow curve at 0.7 MPa inlet places it between the smaller GAFR300 (3500 L/min) and larger GAFR500 (8000 L/min). The nylon bowl (N) offers an alternative to standard PC or metal options, while the automatic drain (A) suits unattended or wet lines. This model omits the mounting bracket (J) for panel-mount installations, includes a circular gauge with MPa/psi scale (PT thread), and carries a 40 um element. The reverse-flow (reflux) valve (K) is fitted as an ordering option. For lines needing lubrication downstream, order the matching GAFC400-15 combination instead. Note that 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 GAFR400N15ASJK FAQ
Working pressure range is 0.15-0.9 MPa (20-130 psi), with a maximum pressure of 1.0 MPa (145 psi) and proof pressure of 1.5 MPa (215 psi). Temperature range is -5 to 70 C. The drain bowl holds 100 cc and the unit weighs 880 g. It uses a 40 um filter element and has a 1/2in port.
The K code indicates a reverse-flow (reflux) valve is fitted to this unit. It is an ordering option that changes the pneumatic symbol; its specific function is detailed in the catalogue. This model also features an automatic drain and no mounting bracket.
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