Airtac GAFR Adjustable Filter Regulator GAFR300N10SK
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR300N10SK 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 GAFR300N10SK
The GAFR300N10SK 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 3/8in port with a 40 um element, and the nylon bowl holds 60 cc of condensate.
This standard-type model regulates from 0.15 to 0.9 MPa (20-130 psi), with a max supply of 1.0 MPa (145 psi). The pressed-in, self-locking knob keeps the set pressure stable against vibration, and the diversion structure spins out liquid water and solid particles before regulation.
Airtac GAFR Adjustable Filter Regulator GAFR300N10SK Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR300N10SK |
|---|---|
| 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 GAFR300N10SK
| 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. |
| 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 GAFC300-10 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 GAFR300N10SK Is Used
Precision jig clamping
Feed a single pneumatic jig or fixture on an assembly bench where stable pressure prevents part movement during machining. The 3/8in port suits short runs to one actuator.
Prototype test rigs
Use on a lab bench or prototype station where a compact filter-regulator cleans and stabilizes air for a single cylinder or valve manifold. The 60 cc bowl handles light condensate for a shift.
Machine tool coolant valves
Supply a small coolant or blow-off valve on a CNC machine where filtered air prevents clogging and steady pressure ensures consistent actuation. The self-locking knob resists vibration drift.
Is the Airtac GAFR Adjustable Filter Regulator GAFR300N10SK the Right Air-Prep Unit?
Choose the GAFR300 body for medium-flow lines; it offers a 3/8in port and a flow curve plotted to 3500 L/min at 0.7 MPa inlet, while the larger GAFR400 steps up to 7000 L/min at the same inlet. The nylon bowl is a build choice, and this unit ships with both semi-auto and manual drains, the standard 0.15-0.9 MPa range, and the mounting bracket included. The fitted gauge reads in MPa/psi per the PT thread, and the reverse-flow (reflux) valve is attached as an ordering difference. If your line needs oil downstream, order the matching GAFC300-10 combination instead. Max supply of 1.0 MPa leaves about 0.1 MPa above the 0.9 MPa top of the regulated range, so plan inlet pressure near the maximum for full output.
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 GAFR300N10SK FAQ
The GAFR300N10SK is a filter & regulator with a 3/8in port, 40 um element, and nylon bowl. Pressure range is 0.15-0.9 MPa (20-130 psi), max pressure 1.0 MPa (145 psi), proof pressure 1.5 MPa (215 psi), temperature range -5 to 70 C. The drain bowl holds 60 cc and the unit weighs 500 g.
The K indicates a reverse-flow (reflux) valve is fitted to the GAFR300N10SK. It is an ordering difference from the standard model; the catalogue defers its function to a separate page, so no operational details are provided here.
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