Airtac GAFR Adjustable Filter Regulator GAFR300N10S
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR300N10S 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 materialNylon
- Drainsemi-auto + manual
- Pressure gaugeCircular, MPa / psi
- Weight500 g
About the Airtac GAFR Adjustable Filter Regulator GAFR300N10S
The GAFR300N10S is a filter and regulator combined into a single body, so incoming air is spun to separate liquid water and solid particles before a balanced regulator sets a steady outlet pressure. This 3/8in unit works across 0.15-0.9 MPa (20-130 psi) with a 40 um element, and its nylon bowl resists different shop environments.
Because the filter and regulator share one housing, this part replaces a separate GAF filter plus GAR regulator, reducing potential leak points and saving rail space. The 60 cc condensate bowl collects what the diversion structure removes, and the pressed-in self-locking knob keeps the set pressure stable against vibration.
Airtac GAFR Adjustable Filter Regulator GAFR300N10S Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR300N10S |
|---|---|
| Series | GAFR300 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 | 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. 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 GAFR300N10S
| 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). |
| 10 | Port size 3/8". 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. |
| (blank) | Circular pressure gauge fitted. |
| (blank) | Filtering grade 40 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 GAFC300-10 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 | GAFR300 · 3/8" · curve to 3500 L/min |
|---|---|
| One size down | GAFR200 |
| One size up | GAFR400 (curve to 7000 L/min) |
| Add a lubricator | GAFC300-10 (F.R.L. combination) |
Where the Airtac GAFR Adjustable Filter Regulator GAFR300N10S Is Used
Single actuator feed
Feed a compact cylinder or a small indexing fixture on a bench assembly station, where the 3/8in port and 40 um filtration protect the valve from particulates.
Machine tool spot supply
Supply a clean, regulated air setpoint to a gauge or a precision check fixture in a machining cell, using the included bracket to mount it on a panel.
Light assembly line
Set a stable pressure for pneumatic hand tools or small clamps on a light assembly line, with the 60 cc bowl sized for a single shift between drains.
Is the Airtac GAFR Adjustable Filter Regulator GAFR300N10S the Right Air-Prep Unit?
Choose the GAFR300 body for 1/4in to 1/2in port lines where a 500 g unit with a 60 cc drain bowl fits; step up to the GAFR400 for a 100 cc bowl and a flow envelope plotted to 7000 L/min at 0.7 MPa inlet if the line is larger. The nylon bowl is a build choice with the same 1.0 MPa (145 psi) maximum as PC or metal versions, so confirm compatibility for aggressive surroundings. This model ships with both semi-auto and manual drains, the mounting bracket, a circular gauge reading MPa/psi, and a 40 um element; the K option adds a reverse-flow valve without changing the pressure range. If oil is needed downstream, order the matching GAFC300-10 combination instead, since this unit does not lubricate. 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 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 GAFC300-10 combination; do not expect an oil mist from this unit.
Airtac GAFR Adjustable Filter Regulator GAFR300N10S FAQ
The GAFR300N10S is a filter & regulator with a 3/8in port, working pressure 0.15-0.9 MPa (20-130 psi), maximum pressure 1.0 MPa (145 psi), proof pressure 1.5 MPa (215 psi), temperature range -5 to 70 C, 40 um element, 60 cc drain bowl, and 500 g weight. It has a nylon bowl, semi-auto plus manual drain, and a fitted gauge.
The nylon bowl is one of three material choices for the GAFR300 body, alongside PC and metal. All three share the same 1.0 MPa (145 psi) maximum pressure and -5 to 70 C temperature range, so the choice is about build preference for the shop environment. Confirm compatibility with any aggressive chemicals or solvents before selecting.
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