Airtac GAFR Adjustable Filter Regulator GAFR300C08LN
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR300C08LN 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 1/4" 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 size1/4"
- Pressure range0.15 - 0.4 MPa (20 - 58 psi)
- Filtering grade40 µm
- Bowl materialMetal
- Drainsemi-auto + manual
- Pressure gaugeNot fitted
- Weight500 g
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac GAFR Adjustable Filter Regulator GAFR300C08LN
The GAFR300C08LN is a filter & regulator with both functions in one body, so it replaces a separate GAF filter plus a GAR regulator and cuts the number of joints to seal. This lower-pressure version regulates from 0.15 to 0.4 MPa (20-58 psi) and filters to 40 um, with the metal bowl protecting the condensate chamber.
The diversion structure spins incoming air to drop liquid water and solid particles into the 60 cc drain bowl, while the balanced regulator holds the set outlet pressure steady as supply varies. At 500 g with a 1/4in port, this GAFR300 suits compact machine builds where a lighter unit than the 880 g GAFR400 is preferred.
Airtac GAFR Adjustable Filter Regulator GAFR300C08LN Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR300C08LN |
|---|---|
| Series | GAFR300 filter & regulator |
| Port size | 1/4" (PT thread) |
| Filtering grade | 40 µm |
| Pressure range | 0.15 - 0.4 MPa (20 - 58 psi) |
| Type | Lower pressure |
| Bowl material | Metal |
| 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 GAFR300C08LN
| GAFR300 | GA300 series filter & regulator — sets the port range, drain-bowl capacity and weight. |
|---|---|
| C | Bowl material: Metal. Available on this body: PC (blank), Metal (C), Nylon (N). |
| 08 | Port size 1/4". This body offers 08 = 1/4", 10 = 3/8", 15 = 1/2". |
| (blank) | Drain: Semi-auto drain + manual 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. |
| N | No pressure gauge; 1/8" gauge connection. |
| (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 GAFC300-08 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 · 1/4" · curve to 3500 L/min |
|---|---|
| One size down | GAFR200 |
| One size up | GAFR400 (curve to 7000 L/min) |
| Add a lubricator | GAFC300-08 (F.R.L. combination) |
Where the Airtac GAFR Adjustable Filter Regulator GAFR300C08LN Is Used
Precision valve actuation
Feed a single pneumatic valve or small actuator on a benchtop assembly fixture, where the lower 0.4 MPa ceiling protects delicate components from over-pressure.
Compact machine build
Mount this 500 g unit on a small panel or frame to supply regulated air to a pick-and-place arm, using the included bracket for secure fixing without tubing strain.
Light duty production line
Use on a low-flow station that operates below 0.4 MPa, such as a parts-present sensor or a small clamping cylinder, with the 60 cc bowl catching condensate between shifts.
Is the Airtac GAFR Adjustable Filter Regulator GAFR300C08LN the Right Air-Prep Unit?
Choose GAFR300 when 1/4in or 3/8in ports match your line; step up to GAFR400 (100 cc bowl, 7000 L/min at 0.7 MPa inlet) if you need more condensate capacity and flow envelope. The metal bowl here suits demanding environments, while PC or nylon are alternatives on other codes. This model ships with the mounting bracket included, a 40 um element, and both semi-auto and manual drains for flexible servicing. The L type caps at 0.4 MPa, so confirm your machine never needs more than that regulated output. No gauge is fitted, but the 1/8in gauge connection allows adding one later. For lubrication downstream, order the GAFC300-08 combination instead. 1.0 MPa max supply leaves about 0.6 MPa above the 0.4 MPa top of the range.
Quick checklist
- ✓ Body size for your peak flow (1/4" 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 GAFC300-08 combination; do not expect an oil mist from this unit.
Airtac GAFR Adjustable Filter Regulator GAFR300C08LN FAQ
The GAFR300C08LN is a filter & regulator with a 1/4in port, regulating from 0.15 to 0.4 MPa (20-58 psi). Maximum pressure is 1.0 MPa (145 psi), proof pressure is 1.5 MPa (215 psi), and temperature range is -5 to 70 C. It has a 60 cc metal drain bowl, weighs 500 g, and filters to 40 um with a semi-auto plus manual drain.
The L code sets the regulated output to 0.15-0.4 MPa for applications that must not exceed that ceiling, such as fragile tooling. The N code means no gauge is supplied, but the 1/8in gauge connection is there if you add one later. This keeps the unit compact and suited to fixed low-pressure settings.
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Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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