Airtac GAFR Adjustable Filter Regulator GAFR40015ALNK
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR40015ALNK 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 - 0.4 MPa (20 - 58 psi). It has no lubricator, so it adds no oil to the airflow.
- TypeFilter & regulator
- Port size1/2"
- Pressure range0.15 - 0.4 MPa (20 - 58 psi)
- Filtering grade40 µm
- Bowl materialPC
- Drainautomatic
- Pressure gaugeNot fitted
- Weight880 g
About the Airtac GAFR Adjustable Filter Regulator GAFR40015ALNK
The GAFR40015ALNK is a filter and regulator combined into a single body, with no lubricator section. It handles a 1/2in port and delivers a lower pressure range of 0.15-0.4 MPa (20-58 psi), using a 40 um element to strain solids. The automatic drain clears the 100 cc condensate bowl without manual attention, and the unit weighs 880 g.
This model ships with the mounting bracket included but no gauge, leaving a 1/4in connection if you add one later. The reverse-flow (reflux) valve is fitted as an ordering difference. A balanced regulator mechanism helps hold the outlet steady as supply pressure varies, while the pressed-in knob resists drift from vibration.
Airtac GAFR Adjustable Filter Regulator GAFR40015ALNK Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR40015ALNK |
|---|---|
| Series | GAFR400 filter & regulator |
| Port size | 1/2" (PT thread) |
| Filtering grade | 40 µm |
| Pressure range | 0.15 - 0.4 MPa (20 - 58 psi) |
| Type | Lower pressure |
| Bowl material | PC |
| 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 GAFR40015ALNK
| GAFR400 | GA400 series filter & regulator — sets the port range, drain-bowl capacity and weight. |
|---|---|
| (blank) | Bowl material: PC. 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. |
| L | Lower pressure type — 0.15 - 0.4 MPa (20 - 58 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. |
| 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 GAFR40015ALNK Is Used
Precision valve actuation
Feed a bank of precision pneumatic valves on a 1/2in line where a stable 0.15-0.4 MPa supply is critical. The balanced regulator holds the set pressure as inlet varies, and the 40 um element protects fine internal orifices.
Machine tool coolant lines
Use it on a machine tool's air circuit to filter condensate and solids before a lower-pressure branch. The 100 cc bowl with automatic drain reduces maintenance stops on a busy production floor.
Test bench air supply
Set up a test bench with a regulated 0.15-0.4 MPa air supply for calibration fixtures. The included bracket mounts it to a frame, and the no-gauge design suits systems with remote pressure sensing.
Is the Airtac GAFR Adjustable Filter Regulator GAFR40015ALNK the Right Air-Prep Unit?
Choose the GAFR400 body for a 1/2in port line needing a 100 cc drain bowl and a flow curve plotted to 7000 L/min at 0.7 MPa inlet, a step up from the GAFR300's 3500 L/min envelope. The PC bowl suits standard shop air, while the automatic drain (A) handles wet or unattended lines, and the included bracket eases panel mounting. The lower-pressure type (L) caps at 0.4 MPa, so confirm your system never needs more; the 40 um element is the default, and the no-gauge (N) code leaves the 1/4in connection open. The reflux valve (K) is present, and PT threads with an MPa/psi scale apply. If oil is needed downstream, order the matching GAFC400-15 combination instead. Max supply 1.0 MPa leaves about 0.6 MPa above the 0.4 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 GAFR40015ALNK FAQ
This filter & regulator has a 1/2in port, a lower pressure range of 0.15-0.4 MPa (20-58 psi), and a maximum pressure of 1.0 MPa (145 psi). Proof pressure is 1.5 MPa (215 psi), and the temperature range is -5 to 70 C. The drain bowl holds 100 cc, the unit weighs 880 g, and the flow curve is plotted to 7000 L/min at 0.7 MPa inlet.
The N code means no gauge is supplied, leaving a 1/4in connection for adding one. The K code indicates a reverse-flow (reflux) valve is fitted, which is an ordering difference from standard models. The automatic drain (A) clears condensate without manual intervention.
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