Airtac GAFR Adjustable Filter Regulator GAFR400C10ASNK
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR400C10ASNK 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 3/8" 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 size3/8"
- 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 GAFR400C10ASNK
The GAFR400C10ASNK is a filter and regulator combined into a single body, eliminating the need for separate GAF and GAR units. It spins incoming air to separate liquid water and trap solid particles, then delivers a steady outlet pressure via its balanced regulator. This model has a 3/8in port, a 0.15-0.9 MPa (20-130 psi) working range, and a 40 um element.
This version comes with a metal bowl and an automatic drain, making it suitable for continuous operation without manual intervention. It weighs 880 g and has a 100 cc condensate bowl, which sets the service interval for draining. The unit includes a mounting bracket, but no gauge; the 1/4in gauge connection is available if you need to add one.
Airtac GAFR Adjustable Filter Regulator GAFR400C10ASNK Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR400C10ASNK |
|---|---|
| Series | GAFR400 filter & regulator |
| Port size | 3/8" (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 GAFR400C10ASNK
| 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). |
| 10 | Port size 3/8". 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. |
| 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 GAFC400-10 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 · 3/8" · curve to 7000 L/min |
|---|---|
| One size down | GAFR300 |
| One size up | GAFR500 (curve to 8000 L/min) |
| Add a lubricator | GAFC400-10 (F.R.L. combination) |
Where the Airtac GAFR Adjustable Filter Regulator GAFR400C10ASNK Is Used
Precision valve control
Feed a bank of precision pneumatic valves on a small assembly machine. The 40 um element protects fine internals, and the balanced regulator holds the set pressure as line supply fluctuates.
Machine tool air prep
Supply clean, regulated air to a CNC machine's tool changer or clamping system. The automatic drain removes condensate continuously, reducing maintenance stops on a busy production floor.
Test rig air supply
Provide a stable air source for a benchtop test fixture that cycles actuators. The 100 cc bowl handles typical workshop moisture, and the included bracket mounts the unit securely to a frame.
Is the Airtac GAFR Adjustable Filter Regulator GAFR400C10ASNK the Right Air-Prep Unit?
Choose the GAFR400 body for a 3/8in port with a 100 cc drain bowl and a flow curve plotted to 7000 L/min at 0.7 MPa inlet. This sits between the GAFR300 (60 cc bowl, 3500 L/min envelope) and the GAFR500 (108 cc bowl, 8000 L/min envelope). The metal bowl is a build choice; the common spec of 1.0 MPa max and -5 to 70 C applies to all bowl materials, so confirm compatibility for aggressive surroundings. The automatic drain handles condensate without manual checks, while the standard S type covers 0.15-0.9 MPa. The mounting bracket is included, and the 40 um element is the standard grade. The PT thread uses an MPa/psi gauge scale, and the reverse-flow (reflux) valve is fitted as an ordering difference. If you need lubrication downstream, order the matching GAFC400-10 combination instead. For a regulated outlet near the top of the range, note that the 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 (3/8" 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 GAFC400-10 combination; do not expect an oil mist from this unit.
Airtac GAFR Adjustable Filter Regulator GAFR400C10ASNK FAQ
The GAFR400C10ASNK is a filter & regulator with a 3/8in port, a 0.15-0.9 MPa (20-130 psi) working range, a 1.0 MPa (145 psi) max pressure, and a 1.5 MPa (215 psi) proof pressure. It operates from -5 to 70 C, has a 100 cc drain bowl, and weighs 880 g. The 40 um element filters solids, and the automatic drain removes condensate.
The metal bowl (C) is a durable build option; the common pressure and temperature specs are the same as PC or nylon bowls, so confirm compatibility for your environment. The no-gauge (N) option means no pressure gauge is supplied, but the 1/4in gauge connection is there if you add one later. The reverse-flow (reflux) valve is also fitted, which is an ordering difference.
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