Airtac GAFR Adjustable Filter Regulator GAFR300N15SK
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR300N15SK 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 materialNylon
- Drainsemi-auto + manual
- Pressure gaugeCircular, MPa / psi
- Weight500 g
About the Airtac GAFR Adjustable Filter Regulator GAFR300N15SK
The GAFR300N15SK is a filter and pressure regulator combined into a single body, with no lubricator section. It handles a 1/2in port and delivers a standard regulated range of 0.15-0.9 MPa (20-130 psi), filtering down to 40 um. The nylon bowl holds 60 cc of condensate, and the unit weighs 500 g.
Its diversion structure spins the air to separate liquid water and solid particles before regulation. The balanced, self-locking regulator keeps the outlet pressure steady as supply varies, and the pressed-in knob resists drift from vibration. This model includes a circular gauge with MPa/psi scale and a reverse-flow valve fitted.
Airtac GAFR Adjustable Filter Regulator GAFR300N15SK Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR300N15SK |
|---|---|
| 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 | 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 GAFR300N15SK
| 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. |
| (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 GAFC300-15 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 GAFR300N15SK Is Used
Precision valve control
Feed a single precision pneumatic valve or small actuator station on a machine tool, where steady pressure and clean air protect sensitive components.
Test bench air supply
Supply a laboratory or workshop test bench with filtered air at a stable pressure, using the 1/2in port to serve multiple small fixtures from one point.
Assembly line tooling
Power pneumatic hand tools or clamping fixtures on an assembly line, where the 60 cc bowl and 500 g mass suit a machine-mounted position.
Is the Airtac GAFR Adjustable Filter Regulator GAFR300N15SK the Right Air-Prep Unit?
Choose the GAFR300 body for a 1/2in port, sitting between the smaller GAFR200 (1/4in, 25 cc bowl) and the larger GAFR400 (3/8in-1/2in, 100 cc bowl). The nylon bowl is a build choice; the common 1.0 MPa max and -5 to 70 C rating apply to all bowl materials, so confirm compatibility for aggressive surroundings. The semi-auto and manual drains are both fitted, and the mounting bracket is included. The 40 um element is the standard grade, and the PT thread means the gauge reads MPa/psi. The reverse-flow valve is an ordering difference only. If oil is needed downstream, the matching GAFC300-15 combination adds a lubricator. With a 1.0 MPa max supply, you have about 0.1 MPa above the 0.9 MPa top of the regulated range.
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 GAFR300N15SK FAQ
It is a filter & regulator with a 1/2in port, working range 0.15-0.9 MPa (20-130 psi), max pressure 1.0 MPa (145 psi), proof pressure 1.5 MPa (215 psi), and temperature range -5 to 70 C. The drain bowl holds 60 cc and the unit weighs 500 g.
The K code indicates a reverse-flow (reflux) valve is fitted. It is an ordering difference; the catalogue defers its function to a separate page, so no operational details are provided here.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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