Airtac GAFR Adjustable Filter Regulator GAFR300N15SNW
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR300N15SNW 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 5 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 grade5 µm
- Bowl materialNylon
- Drainsemi-auto + manual
- Pressure gaugeNot fitted
- Weight500 g
About the Airtac GAFR Adjustable Filter Regulator GAFR300N15SNW
The GAFR300N15SNW is a genuine AirTAC filter & regulator that combines a 5 um filter element and a balanced pressure regulator within a single body, saving rail space and reducing potential leak points compared to separate units. This model has a 1/2in port, a nylon bowl, and a standard pressure range of 0.15-0.9 MPa (20-130 psi), with a maximum supply pressure of 1.0 MPa (145 psi).
Its diversion structure spins incoming air to separate liquid water and solid particles into the 60 cc condensate bowl, while the self-locking knob resists set-pressure drift from vibration. The unit weighs 500 g and is rated for -5 to 70 C, so it must not be allowed to freeze in service.
Airtac GAFR Adjustable Filter Regulator GAFR300N15SNW Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR300N15SNW |
|---|---|
| Series | GAFR300 filter & regulator |
| Port size | 1/2" (PT thread) |
| Filtering grade | 5 µm |
| Pressure range | 0.15 - 0.9 MPa (20 - 130 psi) |
| Type | Standard |
| Bowl material | Nylon |
| 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 | 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 GAFR300N15SNW
| GAFR300 | GA300 series filter & regulator — sets the port range, drain-bowl capacity and weight. |
|---|---|
| N | Bowl material: Nylon. 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". |
| (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. |
| N | No pressure gauge; 1/8" gauge connection. |
| W | Filtering grade 5 µm. |
| (blank) | PT thread; gauge scale MPa / psi. |
| (blank) | No reverse-flow valve. |
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 GAFR300N15SNW Is Used
Precision valve control
Feed a bank of precision pneumatic valves on a small assembly machine, where the 5 um element protects fine internal orifices from particle wear.
Bench test rig
Supply a clean, regulated air supply to a benchtop test fixture that cycles a single 1/2in actuator, using the manual drain for scheduled maintenance.
Spindle cooling line
Protect a machine tool spindle's air curtain or blow-off nozzle from water and particulate, with the semi-auto drain capturing condensate between shifts.
Is the Airtac GAFR Adjustable Filter Regulator GAFR300N15SNW the Right Air-Prep Unit?
Choose this GAFR300 body for 1/2in piping where a flow envelope plotted to 3500 L/min at 0.7 MPa inlet provides ample capacity for medium-sized actuators or a small machine header. The nylon bowl offers an alternative build to the standard PC, and this unit ships with both semi-auto and manual drains, a mounting bracket, and a 5 um element for finer filtration. No gauge is fitted, but the 1/8in gauge connection allows one to be added later, and the PT thread corresponds to an MPa/psi gauge scale. For lines needing oil downstream, order the matching GAFC300-15 combination instead. Remember that 1.0 MPa max supply leaves about 0.1 MPa above the 0.9 MPa top of the range, so plan your inlet pressure near the maximum to achieve the highest regulated 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 GAFR300N15SNW FAQ
This filter & regulator has a 1/2in port, a standard pressure range of 0.15-0.9 MPa (20-130 psi), a maximum pressure of 1.0 MPa (145 psi), and a proof pressure of 1.5 MPa (215 psi). It operates from -5 to 70 C, has a 60 cc drain bowl, and weighs 500 g. The element is 5 um, and it includes a mounting bracket.
The 'N' before the port code indicates a nylon bowl, a build choice that is rated for the same 1.0 MPa maximum and -5 to 70 C range as the PC version. The 'N' after the port code means no gauge is supplied; the 1/8in gauge connection is available if you need to add one. The 5 um element is for finer filtration than the standard 40 um grade.
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