Airtac GAFR Adjustable Filter Regulator GAFR400C15ASNWK
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR400C15ASNWK 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 materialMetal
- Drainautomatic
- Pressure gaugeNot fitted
- Weight880 g
About the Airtac GAFR Adjustable Filter Regulator GAFR400C15ASNWK
The GAFR400C15ASNWK is a filter and regulator combined into a single body, eliminating the need for separate GAF filter and GAR regulator units. This 1/2in port model handles supply up to 1.0 MPa (145 psi) and delivers a regulated 0.15-0.9 MPa (20-130 psi) output, with the 5 um element trapping fine particles for sensitive downstream equipment.
Its 100 cc metal condensate bowl collects water and solids separated by the internal diversion structure, while the automatic drain clears accumulated liquid without manual intervention. The pressed-in self-locking knob maintains the set pressure despite vibration, and the unit's 880 g mass indicates a robust build requiring proper panel or frame mounting rather than tubing support.
Airtac GAFR Adjustable Filter Regulator GAFR400C15ASNWK Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR400C15ASNWK |
|---|---|
| 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 | Metal |
| 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 | 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 GAFR400C15ASNWK
| GAFR400 | GA400 series filter & regulator — sets the port range, drain-bowl capacity and weight. |
|---|---|
| C | Bowl material: Metal. 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). |
| (blank) | Mounting bracket included. |
| N | No pressure gauge; 1/4" gauge connection. |
| 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 GAFR400C15ASNWK Is Used
Precision valve control
Feed a bank of pneumatic valves on a machining center with the 5 um element filtering fine particles that could clog precision pilot orifices, while the regulator holds stable actuation pressure.
Machine tool header
Supply a 1/2in header serving multiple cylinders on a transfer line, where the automatic drain prevents water carryover during high-humidity shifts and the 100 cc bowl extends service intervals.
Instrument air station
Protect sensitive laboratory pneumatics or gauging equipment with the 5 um filtration grade, ensuring particle-free air reaches measurement devices that require consistent 0.15-0.9 MPa supply.
Is the Airtac GAFR Adjustable Filter Regulator GAFR400C15ASNWK the Right Air-Prep Unit?
Choose the GAFR400 body when your line needs 1/2in ports and higher flow than the GAFR300's 3500 L/min envelope; the GAFR400's curve is plotted to 7000 L/min at 0.7 MPa inlet. The metal bowl (C) suits demanding environments, while the automatic drain (A) handles unattended operation or wet lines. This model includes the mounting bracket, omits the gauge (N) - the 1/4in gauge connection is ready for a field-installed unit - and uses the 5 um element (W) for finer filtration than the standard 40 um. The reverse-flow valve (K) is fitted as an ordering difference, and PT threads with MPa/psi gauge scale are standard. If downstream lubrication is required, order the matching GAFC400-15 combination instead. With a 1.0 MPa max supply, you have about 0.1 MPa above the 0.9 MPa top of the regulated 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 GAFR400C15ASNWK FAQ
This filter & regulator has a 1/2in port, working pressure range of 0.15-0.9 MPa (20-130 psi), maximum pressure 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. It uses a 5 um filter element and has an automatic drain.
The N code after the port indicates no gauge is supplied, reducing initial cost and eliminating a potential leak point. The GAFR400 body has a 1/4in gauge connection, so you can add a compatible AirTAC gauge later if you need to read the set pressure directly at the unit.
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