Airtac GAFR Adjustable Filter Regulator GAFR300C15ASNK
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR300C15ASNK 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
- Weight500 g
About the Airtac GAFR Adjustable Filter Regulator GAFR300C15ASNK
The GAFR300C15ASNK is a filter and regulator combined into a single body, saving rail space and reducing potential leak points compared to separate units. It handles a 1/2in port with a 40 um element, rated for 0.15-0.9 MPa (20-130 psi), and includes a metal bowl for the 60 cc condensate capacity.
This model features an automatic drain that expels collected water without manual intervention, ideal for wet or unattended lines. The pressed-in self-locking knob resists vibration-induced drift, keeping the outlet pressure stable as supply varies. No lubricator is present, so oil must be added downstream if required.
Airtac GAFR Adjustable Filter Regulator GAFR300C15ASNK Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR300C15ASNK |
|---|---|
| Series | GAFR300 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 | 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 GAFR300C15ASNK
| 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). |
| 15 | Port size 1/2". 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 GAFC300-15 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 | GAFR300 · 1/2" · curve to 3500 L/min |
|---|---|
| One size down | GAFR200 |
| One size up | GAFR400 (curve to 7000 L/min) |
| Add a lubricator | GAFC300-15 (F.R.L. combination) |
Where the Airtac GAFR Adjustable Filter Regulator GAFR300C15ASNK Is Used
Precision machining center
Feed a 1/2in line to a CNC machine's tool changer or clamping system, where stable 0.15-0.9 MPa pressure and clean air protect precision valves.
Assembly line automation
Supply a multi-station assembly fixture with filtered, regulated air. The automatic drain handles condensate from high-humidity plant air without downtime.
Test bench instrumentation
Provide clean, regulated air to a pneumatic test rig. The 40 um element protects sensitive gauges, while the metal bowl resists accidental impacts.
Is the Airtac GAFR Adjustable Filter Regulator GAFR300C15ASNK the Right Air-Prep Unit?
Choose the GAFR300 body for 1/2in port applications needing up to 3500 L/min flow (plotted at 0.7 MPa inlet). The metal bowl (C) suits environments where impact resistance is a concern, though confirm compatibility with aggressive media. The automatic drain (A) eliminates manual draining, while the included bracket simplifies mounting. No gauge is fitted (N), so the 1/8in gauge connection is available for adding one. The 40 um element handles general shop air; upgrade to 5 um (W) for finer filtration. The PT thread is standard for most regions. The reverse-flow valve (K) is fitted as an ordering difference. If oil is needed downstream, order the matching GAFC300-15 combination instead. Note that 1.0 MPa max supply leaves about 0.1 MPa above the 0.9 MPa top of the range, so plan inlet pressure near 1.0 MPa for full output.
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 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 GAFC300-15 combination; do not expect an oil mist from this unit.
Airtac GAFR Adjustable Filter Regulator GAFR300C15ASNK FAQ
Working pressure is 0.15-0.9 MPa (20-130 psi). Maximum pressure is 1.0 MPa (145 psi), proof pressure is 1.5 MPa (215 psi), and temperature range is -5 to 70 C. The drain bowl holds 60 cc, and the unit weighs 500 g. It has a 1/2in port, 40 um element, and automatic drain.
The N code means no gauge is supplied, reducing cost if you have a panel-mounted gauge. The 1/8in gauge connection is available for adding one later. Without a gauge, you cannot read the set pressure directly, so plan to install one if visual confirmation is needed.
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