Airtac GAFR Adjustable Filter Regulator GAFR400C15ALN
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR400C15ALN 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 materialMetal
- Drainautomatic
- Pressure gaugeNot fitted
- Weight880 g
About the Airtac GAFR Adjustable Filter Regulator GAFR400C15ALN
The GAFR400C15ALN is a filter and pressure regulator combined in a single body, eliminating the need for separate GAF and GAR units. It spins incoming air to separate liquid water and solid particles, then delivers a steady outlet pressure through its balanced, self-locking regulator mechanism.
This model has a 1/2in port and a 100 cc metal condensate bowl, weighing 880 g. It operates in the lower pressure range of 0.15-0.4 MPa (20-58 psi) and uses a 40 um filter element. The automatic drain handles condensate without manual intervention.
Airtac GAFR Adjustable Filter Regulator GAFR400C15ALN Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR400C15ALN |
|---|---|
| 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 | 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 GAFR400C15ALN
| 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. |
| 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. |
| (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 GAFR400C15ALN Is Used
Precision Fixture Clamping
Feed a single-station clamping fixture on a CNC machine with clean, regulated air at a stable low pressure, protecting delicate workholding from pressure spikes.
Paint Spray Booth Supply
Provide filtered, low-pressure air to a manual paint spray gun in a booth, where consistent 0.15-0.4 MPa output prevents finish defects and the automatic drain handles moisture.
Lab Pneumatic Circuit
Supply a laboratory test rig or small pneumatic actuator with precisely regulated low-pressure air, keeping the system clean and protecting sensitive instrumentation.
Is the Airtac GAFR Adjustable Filter Regulator GAFR400C15ALN the Right Air-Prep Unit?
Choose GAFR400 for medium-flow lines needing 3/8in or 1/2in ports; its 100 cc drain bowl holds about 1.7 times the condensate of a GAFR300's 60 cc bowl, meaning fewer drain checks. The metal bowl suits demanding environments, while the automatic drain (A) removes condensate continuously for unattended operation. The L-type regulator tops out at 0.4 MPa, so verify your system never needs more than that. This unit includes the mounting bracket and has no gauge fitted, but the 1/4in gauge connection is ready for one. The standard 40 um element balances filtration with service life. For lines needing lubrication downstream, order the matching GAFC400-15 combination instead. With a 1.0 MPa max supply, you have about 0.6 MPa of headroom above the 0.4 MPa regulated ceiling.
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 GAFR400C15ALN FAQ
The GAFR400C15ALN is a filter & regulator with a 1/2in port, 100 cc metal drain bowl, and 880 g weight. It operates at 0.15-0.4 MPa (20-58 psi) with a 1.0 MPa (145 psi) maximum pressure and 1.5 MPa (215 psi) proof pressure. Temperature range is -5 to 70 C, and it uses a 40 um element.
The 'L' code designates the lower-pressure type, capping output at 0.4 MPa for applications requiring gentle, stable low pressure. The 'N' after the port code means no gauge is supplied; the 1/4in gauge connection is available if you need to add one later for pressure monitoring.
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