Airtac GAFR Adjustable Filter Regulator GAFR300N15ALK
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR300N15ALK 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 - 0.4 MPa (20 - 58 psi). It has no lubricator, so it adds no oil to the airflow.
- TypeFilter & regulator
- Port size1/2"
- Pressure range0.15 - 0.4 MPa (20 - 58 psi)
- Filtering grade40 µm
- Bowl materialNylon
- Drainautomatic
- Pressure gaugeCircular, MPa / psi
- Weight500 g
About the Airtac GAFR Adjustable Filter Regulator GAFR300N15ALK
The GAFR300N15ALK is a filter and pressure regulator combined into a single body, saving rail space and reducing potential leak points compared to separate units. It handles a 1/2in port and delivers a regulated output of 0.15-0.4 MPa (20-58 psi), with a 40 um element for standard filtration.
This model features a nylon bowl with an automatic drain, making it suitable for unattended operation. The integrated circular gauge with MPa/psi scale allows for direct pressure reading, and the unit weighs 500 g, indicating a robust build for its size class.
Airtac GAFR Adjustable Filter Regulator GAFR300N15ALK Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR300N15ALK |
|---|---|
| Series | GAFR300 filter & regulator |
| Port size | 1/2" (PT thread) |
| Filtering grade | 40 µm |
| Pressure range | 0.15 - 0.4 MPa (20 - 58 psi) |
| Type | Lower pressure |
| Bowl material | Nylon |
| 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. 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 GAFR300N15ALK
| 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". |
| A | Drain: Automatic drain. |
| L | Lower pressure type — 0.15 - 0.4 MPa (20 - 58 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 GAFR300N15ALK Is Used
Precision Fixturing
Ideal for powering pneumatic clamps on a small assembly fixture where a stable, low pressure of up to 0.4 MPa is sufficient and space is at a premium.
Lab Air Supply
Suitable for providing filtered, regulated air to sensitive laboratory instruments or air bearings that require a gentle, consistent pressure below 0.4 MPa.
Dedicated Workstation
A good fit for a single bench-top pneumatic press or a manual testing station, offering clean air and a set pressure in one compact, wall-mountable unit.
Is the Airtac GAFR Adjustable Filter Regulator GAFR300N15ALK the Right Air-Prep Unit?
Choose this GAFR300 for 1/2in piping where a compact, combined unit is preferred over a separate filter and regulator. The nylon bowl offers an alternative to PC or metal, and the automatic drain (A) handles condensate without manual intervention, ideal for wet or remote lines. The lower-pressure type (L) is specifically for systems needing only up to 0.4 MPa (58 psi); if higher pressure is ever required, select the standard type instead. The included mounting bracket simplifies installation, while the fitted gauge provides a clear readout. The reverse-flow (reflux) valve (K) is attached as an ordering option. If downstream lubrication is needed, order the matching GAFC300-15 combination. Note that the 1.0 MPa max supply leaves about 0.6 MPa above the 0.4 MPa top of the range, so plan your inlet pressure accordingly.
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 GAFR300N15ALK FAQ
The GAFR300N15ALK is a filter & regulator with a 1/2in port. Its pressure range is 0.15-0.4 MPa (20-58 psi). Maximum pressure is 1.0 MPa (145 psi), and proof pressure is 1.5 MPa (215 psi). It operates in temperatures from -5 to 70 C and has a 60 cc drain bowl and a weight of 500 g.
The 'L' designates a lower-pressure regulator type, with a maximum regulated output of 0.4 MPa (58 psi). The 'K' indicates the unit is fitted with a reverse-flow (reflux) valve, which is an ordering difference; its specific function is detailed in the catalogue.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC Air-Preparation Units
Request a Quote for Airtac GAFR Adjustable Filter Regulator GAFR300N15ALK
Send us the quantity, thread type (PT / G / NPT) and destination. We confirm price, stock and lead time — usually within 7-8 hours.