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
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
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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Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
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