The AirTAC GC300-08G AirTAC F.R.L. Combination, G1/4, Auto Drain is a genuine G-series three-unit F.R.L. combination: a separate filter, a separate regulator and a separate lubricator assembled as one air-preparation station. It has PT1/4" ports, a 40 µm element, a automatic drain and regulates 0.15 - 0.9 MPa (20 - 130 psi).
The GC300-08G is an AirTAC GC-series three-unit F.R.L. combination: a separate air filter, pressure regulator and oil-mist lubricator assembled as one set, so one connection point filters water and particulate from the compressed air, holds a set downstream pressure, and adds oil mist for downstream pneumatic tools and cylinders. This configuration is the 300 size with 1/4 in G-threaded ports, a 40 um standard filter element, an automatic drain on the filter bowl, a standard regulator adjustable from 0.15 to 0.9 MPa (20-130 psi), an embedded square gauge scaled in psi, and a mounting bracket included. The polycarbonate bowl suits the 300 size, maximum inlet pressure is 1.0 MPa (145 psi), and the working temperature range is -5 to 70 C (non-freezing).
This is a genuine AirTAC part. The GC family is available in 200, 300, 400 and 600 sizes covering 1/8 in to 1 in ports, with options including a 5 um filter element (code W), manual or differential-pressure drain in place of automatic, gauge scales in MPa or bar as well as psi, and PT or NPT threads as orderable alternatives to the G thread shown here. Flow is published by AirTAC as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing for your application on request.
| Model | GC300-08G AirTAC F.R.L. Combination, G1/4, Auto Drain |
|---|---|
| Series | GC300 F.R.L. combination |
| Composition | Filter + regulator + lubricator (3 units) |
| Port size | PT1/4" (G (BSPP) thread) |
| Filtering grade | 40 µm |
| Regulating range | 0.15 - 0.9 MPa (20 - 130 psi) |
| Pressure type | Standard type |
| Fluid | Compressed air |
|---|---|
| Max. working pressure | 1.0 MPa (145 psi) |
| Temperature range | -5 to +70 °C (unfreeze) |
| Drain type | Automatic drain |
| Bowl material | PC |
| Pressure gauge | Fitted — square, psi scale |
| Reflux valve | Not fitted |
Specifications follow the official AirTAC G-series air-preparation data. The regulating band is set by the drain type: automatic and differential-pressure drains regulate 0.15 - 0.9 MPa, a manual drain regulates 0.05 - 0.9 MPa. Standard type, regulating 0.15 - 0.9 MPa (20 - 130 psi). The combination has no separate bracket code — the three units couple together with their own mounting hardware. Flow curves, weight and outline dimensions are not published in our data set — ask us and we will confirm from the factory datasheet.
| GC300 | G-series F.R.L. combination, 300 body — sets the port range. |
|---|---|
| 08 | Port size PT1/4". This body offers 08 = PT1/4", 10 = PT3/8", 15 = PT1/2". |
| A | Drain: Automatic drain — this also sets the regulating band (0.15 - 0.9 MPa (20 - 130 psi)). |
| (blank) | Standard type. Blank is standard, L is the low-pressure type. |
| (blank) | Pressure gauge fitted (blank). |
| F | Gauge shape: Square. C is round, F is square. |
| 2 | Gauge scale: psi. 1 is MPa, 2 is psi, 3 is bar. |
| (blank) | Filtering grade 40 µm. Only 40 µm (blank) and 5 µm (W) exist. |
| G | G (BSPP) thread. PT is the default; G is BSPP and T is NPT. |
| (blank) | No reverse-flow valve (the default). |
Field order is size, port, drain, type, gauge, shape, scale, grade, thread, reflux — there is no bracket position on a combination. Constituent units, orderable separately as spares: GF300-08 filter, GR300-08 regulator and GL300-08 lubricator.
A GC is three separate units, so the filter and the regulator can each be serviced or replaced on their own. A GFC is the two-unit set, where filtering and regulating share one body — shorter, but the two functions come as one part. Both filter, regulate and lubricate.
| This model | GC300 · PT1/4" · 40 µm |
|---|---|
| One size down | GC200 |
| One size up | GC400 |
| Two-unit equivalent | GFC300-08 |
| Build order | Filter → regulator → lubricator |
Feeds filtered, regulated and lubricated air to the pneumatic clamps and tool-change cylinders on a CNC machining cell, with the automatic drain handling condensate on an unattended machine.
Supplies treated air to the pick-and-place cylinders and diverters on a carton packaging conveyor, keeping moisture and scale out of the valves while oil mist lubricates the actuators.
Serves the drop lines at an assembly bench where impact wrenches and air ratchets run all shift, with the regulator holding a steady set pressure and the lubricator extending tool life.
Start with the port and size step: the 300 size carries 1/4 in ports, and the larger 400 and 600 sizes move more air at lower pressure drop, so match the size to your line's flow demand rather than only to the pipe thread. Choose the drain to suit access: automatic drain (as fitted here) suits installations that are not visited daily, manual drain suits attended stations, and differential-pressure drain is the catalogue default. Choose the filter grade: 40 um is the standard element and the 5 um option (code W) suits finer downstream needs. Pick the gauge scale (MPa, psi or bar) and the thread family (PT standard, G or NPT to order). Flow is published as curves, not a single rating, so send us your application's flow and pressure requirements and we will confirm sizing against the datasheet before you order.
Quick checklist
The PC bowls must not be cleaned with solvents — wipe them with a dry cloth. The lubricator adds an oil mist downstream of the regulator. If any branch of the line must stay oil-free, take that branch off before the lubricator, or use a GR300-08 regulator with a GF300-08 filter on that branch.
AirTAC publishes flow for the GC series as curves, not as a single rated number, so there is no one figure we can honestly quote. Send us your required flow and working pressure and we will confirm the sizing from the datasheet on request before you order.
The A in the code GC30008AF2G specifies an automatic drain, which expels collected condensate from the filter bowl without anyone opening it - useful for installations that are not checked daily. Manual drain and differential-pressure drain versions are available in the same size if you prefer a different arrangement.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
Standard models usually ship in 3-4 days.
Most inquiries answered within 7-8 hours.
Send us the quantity, thread type (PT / G / NPT), gauge scale and destination. We confirm price, availability and lead time — usually within 7-8 hours.