Airtac GAFR Adjustable Filter Regulator GAFR400C15ASN
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR400C15ASN 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 materialMetal
- Drainautomatic
- Pressure gaugeNot fitted
- Weight880 g
About the Airtac GAFR Adjustable Filter Regulator GAFR400C15ASN
The GAFR400C15ASN is a filter & regulator from AirTAC, combining both functions in a single body. It filters incoming air with a diversion structure that spins out liquid water and solid particles, then regulates the outlet to a steady pressure. This model has a 1/2in port, a standard pressure range of 0.15-0.9 MPa (20-130 psi), and a 40 um element. It is a single unit, not a train of parts, and it does not include a lubricator.
The metal bowl (C) holds 100 cc of condensate, and the automatic drain (A) clears it without manual intervention. Weighing 880 g, this unit is sized for medium-flow lines and needs a proper panel or frame mount rather than support from the tubing. The gauge is not fitted (N), but the 1/4in gauge connection is ready for one if you need to read the set pressure.
Airtac GAFR Adjustable Filter Regulator GAFR400C15ASN Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR400C15ASN |
|---|---|
| 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 | 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 GAFR400C15ASN
| 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. |
| (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 GAFR400C15ASN Is Used
Machine tool coolant systems
Feed a 1/2in line to a CNC machine's coolant and chip-removal system, where the automatic drain handles condensate from wet shop air without daily attention.
Assembly line pneumatic manifolds
Supply a multi-station assembly fixture with regulated air at 0.15-0.9 MPa, using the 40 um element to protect downstream valves and actuators from particulates.
Test benches for pneumatic components
Provide a stable, filtered air source to a test bench cycling valves or cylinders, where the balanced regulator holds the set pressure as shop supply varies.
Is the Airtac GAFR Adjustable Filter Regulator GAFR400C15ASN the Right Air-Prep Unit?
Choose the GAFR400 body for 3/8in or 1/2in ports, with a flow envelope plotted to 7000 L/min at 0.7 MPa inlet. The metal bowl is a build choice for the condensate chamber; the common specification (1.0 MPa max, -5 to 70 C) is the same for PC, nylon, or metal, so confirm compatibility for aggressive surroundings. The automatic drain suits unattended or wet lines, while the standard type covers 0.15-0.9 MPa. The mounting bracket is included, and the 40 um element is the standard grade. The PT thread matches the MPa/psi gauge scale. If you need oil downstream, order the matching GAFC400-15 combination instead. 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 GAFR400C15ASN FAQ
The GAFR400C15ASN has a 1/2in port, a standard pressure range of 0.15-0.9 MPa (20-130 psi), a maximum pressure of 1.0 MPa (145 psi), and a proof pressure of 1.5 MPa (215 psi). It operates from -5 to 70 C and must not freeze. The metal drain bowl holds 100 cc, and the unit weighs 880 g.
The N after the port code means no gauge is supplied. The GAFR400 body has a 1/4in gauge connection, so you can add a compatible gauge later to read the set pressure. Without one, you cannot verify the outlet pressure directly.
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