Airtac GAFR Adjustable Filter Regulator GAFR400N15ASN
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR400N15ASN 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 gaugeNot fitted
- Weight880 g
About the Airtac GAFR Adjustable Filter Regulator GAFR400N15ASN
The GAFR400N15ASN is a filter & regulator in one body, combining a diversion filter and a balanced pressure regulator without any lubricator. It handles a 1/2in port, delivers 0.15-0.9 MPa (20-130 psi), and uses a 40 um element. The automatic drain clears the 100 cc nylon bowl without manual attention, and the 880 g mass signals a unit that needs a proper panel mount rather than tubing support.
This single body replaces the joint between a separate GAF filter and GAR regulator, cutting potential leak points and saving rail width. The pressed-in self-locking knob holds the set pressure against vibration, while the diversion structure spins out liquid water and solid particles before regulation. With no gauge fitted, the 1/4in gauge connection is ready for an add-on if you need to read outlet pressure.
Airtac GAFR Adjustable Filter Regulator GAFR400N15ASN Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR400N15ASN |
|---|---|
| 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 | 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 GAFR400N15ASN
| 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). |
| (blank) | Mounting bracket included. |
| N | No pressure gauge; 1/4" gauge connection. |
| (blank) | Filtering grade 40 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 GAFR400N15ASN Is Used
Machine tool air prep
Feed a CNC lathe's pneumatic clamping system with filtered, regulated air at 0.15-0.9 MPa, using the automatic drain to handle condensate from a busy shift.
Assembly station supply
Supply a multi-operator assembly bench with a steady 0.4 MPa for pneumatic screwdrivers, relying on the 100 cc bowl to reduce drain frequency across the day.
Test rig air supply
Provide clean, regulated air to a leak-test fixture at 0.5 MPa, with the nylon bowl resisting corrosion in a humid test lab and the auto drain preventing water carryover.
Is the Airtac GAFR Adjustable Filter Regulator GAFR400N15ASN the Right Air-Prep Unit?
Choose the GAFR400N15ASN for a 1/2in line that needs both filtration and regulation in a compact footprint. The nylon bowl suits environments where you prefer a non-metallic build, and the automatic drain handles wet or unattended lines without manual checks. The standard pressure type covers 0.15-0.9 MPa (20-130 psi), the mounting bracket is included, and the 40 um element handles general shop air. If you need finer filtration, select the W option for a 5 um element; if oil is required downstream, order the matching GAFC400-15 combination instead. The no-gauge configuration leaves the 1/4in connection open for a later gauge, and the PT thread matches standard local fittings. 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 GAFR400N15ASN FAQ
The GAFR400N15ASN is a filter & regulator with a 1/2in port, working range 0.15-0.9 MPa (20-130 psi), max pressure 1.0 MPa (145 psi), proof pressure 1.5 MPa (215 psi), temperature range -5 to 70 C, 40 um element, 100 cc drain bowl, and 880 g weight. It has an automatic drain, nylon bowl, no gauge, and includes the mounting bracket.
The automatic drain (A code) on this model expels condensate from the 100 cc bowl without manual intervention, ideal for wet lines or unattended operation. The standard blank version would include both semi-auto and manual drains, requiring someone to periodically open the manual valve to empty the bowl.
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