Airtac GAFR Adjustable Filter Regulator GAFR400C10SK
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR400C10SK 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
- Drainsemi-auto + manual
- Pressure gaugeCircular, MPa / psi
- Weight880 g
About the Airtac GAFR Adjustable Filter Regulator GAFR400C10SK
The GAFR400C10SK is a filter and regulator combined into a single body, eliminating the need for separate GAF and GAR units. This 3/8in port model handles 0.15-0.9 MPa (20-130 psi) with a 40 um element, and its metal bowl holds 100 cc of condensate.
A balanced regulator mechanism keeps the outlet pressure steady as supply varies, while the pressed-in self-locking knob resists drift from vibration. The diversion structure spins incoming air to separate liquid water and solid particles into the bowl, and the unit weighs 880 g with a flow curve plotted to 7000 L/min at 0.7 MPa inlet.
Airtac GAFR Adjustable Filter Regulator GAFR400C10SK Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR400C10SK |
|---|---|
| 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 | Semi-auto drain + manual 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. The fitted circular gauge reads in MPa / psi, set by the PT thread code. This unit filters and regulates only; it does not add lubrication.
Model Code: Airtac GAFR Adjustable Filter Regulator GAFR400C10SK
| 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". |
| (blank) | Drain: Semi-auto drain + manual 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. |
| (blank) | Circular pressure gauge fitted. |
| (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 GAFR400C10SK Is Used
Machine Tool Air Prep
Feed a CNC machine's pneumatic clamping system with filtered, regulated air at a steady 0.6 MPa. The 100 cc metal bowl handles condensate from humid shop air, and the self-locking knob keeps pressure stable during vibration.
Assembly Line Actuators
Supply a bank of pneumatic actuators on an assembly station. The 3/8in port delivers adequate flow for multiple cylinders, while the balanced regulator maintains consistent pressure as other equipment cycles on and off.
Test Bench Air Supply
Provide clean, regulated air to a pneumatic test fixture that checks valve operation. The 40 um element protects sensitive components, and the included gauge lets operators verify set pressure at a glance.
Is the Airtac GAFR Adjustable Filter Regulator GAFR400C10SK the Right Air-Prep Unit?
Choose this GAFR400 body for 3/8in ports where you need both filtration and pressure control in one compact package. The metal bowl suits demanding environments, while the semi-auto plus manual drain gives you both automatic condensate release and manual override. The included mounting bracket simplifies installation, and the fitted circular gauge with MPa/psi scale lets you monitor set pressure directly. The 40 um element handles general workshop air, and the reverse-flow (reflux) valve is fitted as an ordering difference. If your line needs lubrication downstream, order the matching GAFC400-10 combination instead. Max supply 1.0 MPa 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 GAFR400C10SK FAQ
Working pressure range is 0.15-0.9 MPa (20-130 psi), with 1.0 MPa (145 psi) maximum and 1.5 MPa (215 psi) proof pressure. Temperature range is -5 to 70 C. The drain bowl holds 100 cc and the unit weighs 880 g, with a 3/8in port and 40 um element.
The K code indicates a reverse-flow (reflux) valve is fitted to this GAFR400C10SK. It is an ordering difference from models without this valve. The catalogue defers its function to a separate page, so please confirm the specific behavior from the full datasheet if it matters for your application.
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Covers non-human-caused product damage.
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