The AirTAC GC300-08 AirTAC F.R.L. Combination Unit, 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 GC300-08 is a three-piece AirTAC F.R.L. combination: a separate air filter, pressure regulator and oil-mist lubricator assembled as one unit. It conditions compressed air in a single mounting - the filter removes water and particulate down to 40 um, the regulator holds a steady downstream pressure adjustable from 0.15 to 0.9 MPa (20-130 psi), and the lubricator feeds an oil mist to downstream pneumatic tools and cylinders. This configuration is size 300 with a G1/4 (BSPP) port, automatic drain on the filter bowl, a square pressure gauge reading in psi, a reverse/check valve fitted, and a mounting bracket included. The polycarbonate bowls suit the -5 to 70 C (non-freezing) operating range, and maximum inlet pressure is 1.0 MPa (145 psi).
This is a genuine AirTAC part. The GC series is available in sizes 200, 300, 400 and 600 with matching port sizes, and can be ordered with manual or differential-pressure drain instead of automatic, a 5 um filter element (code W), alternative gauge scales (MPa, psi or bar), an external round gauge, NPT or PT threads, and with or without the check valve. Flow figures for this series are published as curves rather than a single rating, so ask us to confirm the datasheet and sizing for your application on request.
| Model | GC300-08 AirTAC F.R.L. Combination Unit, 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 | Fitted (reverse flow permitted) |
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. |
| K | Reverse-flow (reflux) valve fitted. |
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 clean, regulated and lubricated air to spray guns and air-assisted applicators on a paint line, where water and grit in the supply would spoil finish quality and steady pressure keeps the pattern consistent.
Conditions the air feeding cylinders and grippers on a carton-forming and sealing conveyor, protecting seals from particulate, holding set pressure for consistent stroke speed, and lubricating the actuators in continuous duty.
Supplies filtered, regulated and lubricated air to clamps and vise cylinders on milling and drilling stations, where a check valve helps hold the downstream circuit and the automatic drain keeps moisture out of the clamping air.
Start with size and port: 200, 300, 400 and 600 step up in port and flow capacity, so match the size to the air demand of the circuit - for flow, ask us to check the published curve against your application before ordering, since the series has no single rated figure. Then pick the drain: automatic (this model) empties the filter bowl without attention, manual drain is emptied by hand, and differential-pressure drain discharges on a pressure drop. Choose the 40 um standard element or the 5 um (W) element for finer filtration, and the gauge scale - this unit carries an embedded square gauge reading in psi, with MPa, bar and an external round gauge available. Thread is G (BSPP) here; PT is the standard and NPT is an order option. A bracket is included, and the check valve (code K) is fitted on this unit.
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 rather than a single rated figure, so we do not quote one number. Tell us your operating pressure and air demand and we will confirm the sizing against the datasheet curve on request before you order.
The automatic drain (code A) discharges collected condensate from the filter bowl on its own, so the unit suits duty where nobody opens a manual drain regularly. The trailing K means a reverse/check valve is fitted, and the F2 in the code denotes the embedded square gauge reading in psi.
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.