Airtac GAFR Adjustable Filter Regulator GAFR300C08ASK
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR300C08ASK 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 gaugeCircular, MPa / psi
- 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 GAFR300C08ASK
The GAFR300C08ASK is a filter and regulator combined into a single body, so incoming air is cleaned and then set to a steady outlet pressure without needing separate components. This 1/4in model handles 0.15-0.9 MPa (20-130 psi) and uses a 40 um element to trap solid particles while the diversion structure spins out liquid water.
The metal bowl holds 60 cc of condensate, and the automatic drain clears it without manual attention. Weighing 500 g, this unit suits a compact machine build where a separate filter and regulator would take up extra rail space and add more potential leak points.
Airtac GAFR Adjustable Filter Regulator GAFR300C08ASK Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR300C08ASK |
|---|---|
| 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. 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 GAFR300C08ASK
| 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. |
| (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 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 GAFR300C08ASK Is Used
Precision valve actuation
Feed a single precision pneumatic valve or a small indexing table where stable pressure is critical. The balanced regulator holds the setpoint as supply varies, and the 40 um element protects the valve internals from particle wear.
Machine tool coolant lines
Use on a lathe or mill to supply a consistent pressure to a coolant or chip-blow nozzle. The automatic drain clears water from the 60 cc bowl without stopping production, and the metal bowl suits a shop environment.
Assembly station air supply
Mount on a workbench to provide filtered, regulated air to hand tools or fixtures. The included bracket simplifies panel mounting, and the 500 g weight means it needs proper support rather than tubing alone.
Is the Airtac GAFR Adjustable Filter Regulator GAFR300C08ASK the Right Air-Prep Unit?
Choose the GAFR300 body for 1/4in ports and a 60 cc drain bowl, stepping up from the GAFR200's 25 cc bowl if you want fewer drain interventions. The metal bowl is a build choice with the same 1.0 MPa max and -5 to 70 C range as PC or nylon, so confirm compatibility for your environment. The automatic drain handles wet or unattended lines, while the standard pressure type covers 0.15-0.9 MPa. The mounting bracket is included, and the fitted circular gauge reads in MPa/psi. The 40 um element is the standard choice, and the reverse-flow valve is fitted as an ordering difference. If you need oil downstream, order the matching GAFC300-08 combination instead. With a 1.0 MPa max supply, you have about 0.1 MPa above the 0.9 MPa top of the regulated range to work with.
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 GAFR300C08ASK FAQ
The GAFR300C08ASK is a filter and regulator with a 1/4in port, working pressure of 0.15-0.9 MPa (20-130 psi), max pressure of 1.0 MPa (145 psi), and proof pressure of 1.5 MPa (215 psi). It operates from -5 to 70 C and must not freeze. The drain bowl holds 60 cc and the unit weighs 500 g. It has a 40 um element, automatic drain, metal bowl, and a fitted gauge reading MPa/psi.
The K code indicates a reverse-flow (reflux) valve is fitted as an ordering difference. It is drawn as a separate pneumatic symbol in the catalogue, and its function is detailed on a page not included in our data. For application questions, confirm with the full AirTAC datasheet.
Authorized Export Seller
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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