The AirTAC Airtac GAFR Filter & Regulators GAFR300C08ST 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 - 0.9 MPa (20 - 130 psi). It has no lubricator, so it adds no oil to the airflow.
The GAFR300C08ST is an AirTAC filter & regulator: one body that first spins the incoming air so water and solid particles separate into the bowl, then holds a steady outlet pressure between 0.15 and 0.9 MPa (20-130 psi). The 1/4in ports and the 40 um standard element suit general machine air. A circular gauge with clip and magnifier is fitted, and the NPT thread means the gauge reads psi/bar. There is no lubricator anywhere in this unit. The metal bowl on this model carries 60 cc of condensate, and the whole assembly weighs 500 g, so it should sit on the bracket (included) or a panel rather than hang from the tubing. Drainage is by both semi-automatic and manual drain, so a daily check or an unattended line both work. Rated from -5 to 70 C, it must not be allowed to freeze.
| Model | Airtac GAFR Filter & Regulators GAFR300C08ST |
|---|---|
| Series | GAFR300 filter & regulator |
| Port size | 1/4" (NPT thread) |
| Filtering grade | 40 µm |
| Pressure range | 0.15 - 0.9 MPa (20 - 130 psi) |
| Type | Standard |
| 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. The fitted circular gauge reads in psi / bar, set by the NPT thread code. This unit filters and regulates only; it does not add lubrication.
| 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. |
| 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. |
| T | NPT thread; gauge scale psi / bar. |
| (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.
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) |
A single 1/4in supply filtered and regulated in one body feeds sealing jaws and small cylinders at a steady 0.15-0.9 MPa (20-130 psi), with the gauge giving operators a psi/bar readout at the frame.
Stopper and diverter cylinders along a conveyor line get clean, moisture-reduced air from the 40 um element, while the balanced regulator keeps gate timing consistent as shop supply wanders.
Clamping jigs and air-powered hand stations at a bench run off one 1/4in unit; the semi-auto and manual drains let the operator clear the 60 cc bowl at shift start.
Body 300 is the mid entry of the GAFR range: its flow curve is plotted to 3500 L/min at 0.7 MPa inlet, which steps down from the 7000 L/min envelope of body 400 if your line is small, and up from body 200 at 2000 L/min if it is not. You chose the metal (C) bowl over the default PC or nylon versions; the 1.0 MPa (145 psi) maximum, 1.5 MPa (215 psi) proof pressure and -5 to 70 C window are identical across all three materials, so confirm metal against any aggressive surroundings on your side. Drainage here is semi-automatic plus manual, not the A-code automatic drain. Type S sets the 0.15-0.9 MPa band; if your circuit only ever needs up to 0.4 MPa, the L variant costs less to run against. No J code means the mounting bracket is supplied with the unit, the gauge is fitted, and T specifies NPT threads with a psi/bar gauge scale. If the line also needs oil mist downstream, order the matching GAFC combination instead of expecting this unit to lubricate. For upkeep planning: the 60 cc drain bowl of this GAFR300 holds about 2.4x the condensate of the GAFR200's 25 cc, so it needs emptying roughly that much less often.
Quick checklist
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.
This filter & regulator combines filtration and pressure regulation in one body. Pressure range is 0.15-0.9 MPa (20-130 psi), maximum pressure 1.0 MPa (145 psi) and proof pressure 1.5 MPa (215 psi). It works from -5 to 70 C and must not freeze. The drain bowl holds 60 cc and the unit weighs 500 g. Ports are 1/4in NPT, the element grade is 40 um, and a psi/bar circular gauge is fitted.
The C in GAFR300C08ST selects the metal bowl instead of the standard PC or the nylon (N) one. It is a build and environment choice: AirTAC rates all three materials identically at 1.0 MPa (145 psi) maximum and -5 to 70 C, and publishes no chemical or impact data per material, so check metal against your specific surroundings before ordering. The rest of the unit, including the 60 cc drain bowl, the drains and the 40 um element, stays the same.
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