Airtac GAFR Adjustable Filter Regulator GAFR300C08ASNK
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR300C08ASNK 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 1/4" 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 size1/4"
- Pressure range0.15 - 0.9 MPa (20 - 130 psi)
- Filtering grade40 µm
- Bowl materialMetal
- Drainautomatic
- Pressure gaugeNot fitted
- Weight500 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 GAFR300C08ASNK
The GAFR300C08ASNK is a filter & regulator that combines air filtration and pressure regulation in a single body, replacing the need for separate GAF and GAR units. This 1/4in port model weighs 500 g and uses a metal bowl, with the regulator delivering a steady 0.15-0.9 MPa (20-130 psi) outlet.
Air enters through a diversion structure that spins the flow to separate liquid water and trap solid particles into the 60 cc drain bowl, while the balanced, self-locking regulator holds the set pressure as supply varies. The 40 um element handles general workshop air, and the automatic drain clears condensate without manual attention.
Airtac GAFR Adjustable Filter Regulator GAFR300C08ASNK Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR300C08ASNK |
|---|---|
| Series | GAFR300 filter & regulator |
| Port size | 1/4" (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 | 60 cc |
| Bracket | Included |
| Weight | 500 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 GAFR300 is 1/8" if you add one. This unit filters and regulates only; it does not add lubrication.
Model Code: Airtac GAFR Adjustable Filter Regulator GAFR300C08ASNK
| GAFR300 | GA300 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). |
| 08 | Port size 1/4". This body offers 08 = 1/4", 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; 1/8" 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 GAFC300-08 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 | GAFR300 · 1/4" · curve to 3500 L/min |
|---|---|
| One size down | GAFR200 |
| One size up | GAFR400 (curve to 7000 L/min) |
| Add a lubricator | GAFC300-08 (F.R.L. combination) |
Where the Airtac GAFR Adjustable Filter Regulator GAFR300C08ASNK Is Used
Precision jig clamping
Feed a single pneumatic clamp or small fixture on an assembly bench, where the 1/4in port and 500 g body fit neatly into a compact control panel.
Machine tool air supply
Protect a lathe or milling machine's solenoid valves from water and particles, with the automatic drain keeping the 60 cc bowl clear during long shifts.
Test bench regulation
Supply a consistent 0.15-0.9 MPa to a leak tester or pressure gauge setup, where the balanced regulator maintains the setpoint as shop pressure fluctuates.
Is the Airtac GAFR Adjustable Filter Regulator GAFR300C08ASNK the Right Air-Prep Unit?
Choose the GAFR300 body for 1/4in or 3/8in ports, sitting between the smaller GAFR200 (25 cc bowl, 290 g) and the larger GAFR400 (100 cc bowl, 880 g). The metal bowl suits demanding environments, while the automatic drain is ideal for wet or unattended lines; the included bracket simplifies mounting, and the PT thread matches standard local fittings. The reverse-flow valve is fitted as an ordering difference, and the 40 um element is the standard grade for general use. If oil is needed downstream, order the matching GAFC300-08 combination instead. With the gauge omitted, the 1/8in gauge connection is available for a later addition. Note that 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 (1/4" 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 60 cc bowl fills.
- check Keep the unit above freezing (-5 to +70 °C, unfreeze).
- check Support the 500 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 GAFC300-08 combination; do not expect an oil mist from this unit.
Airtac GAFR Adjustable Filter Regulator GAFR300C08ASNK FAQ
Working pressure range is 0.15-0.9 MPa (20-130 psi), with a maximum pressure of 1.0 MPa (145 psi) and proof pressure of 1.5 MPa (215 psi). Temperature range is -5 to 70 C. The drain bowl holds 60 cc, the unit weighs 500 g, and the flow curve is plotted to 3500 L/min at 0.7 MPa inlet.
The metal bowl (C) is a build choice for environments where a transparent PC bowl might not be preferred, though the 1.0 MPa max and -5 to 70 C rating are identical across all bowl materials. The N after the port means no gauge is supplied; the 1/8in gauge connection is there if you add one later. The reverse-flow valve (K) is fitted as an ordering option.
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Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
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