The AirTAC GC300-08 AirTAC F.R.L. Combination G1/4 Low-Pressure 5 um 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 5 µm element, a manual drain and regulates 0.05 - 0.9 MPa (7 - 130 psi).
The AirTAC GC300 series is a three-piece F.R.L. combination: a separate air filter, a pressure regulator and an oil-mist lubricator assembled as one air-treatment stack. This GC300-08 configuration is built for a 1/4 in port (G thread; PT is the standard form and G/NPT are orderable thread options), with the fine 5 um filter element (code W), a manual drain on the filter bowl, the low-pressure type regulator, and a round external gauge reading in psi. The polycarbonate bowls suit the -5 to 70 C (non-freezing) operating range, and maximum working (inlet) pressure is 1.0 MPa (145 psi).
This is a genuine AirTAC part. The GC family spans sizes 200, 300, 400 and 600, with choices of port size, drain type, filter grade (40 um standard, 5 um optional), gauge style and scale, and thread form. Flow is published in the catalogue as curves rather than a single rated figure, so we confirm the datasheet and flow figures for your application on request.
| Model | GC300-08 AirTAC F.R.L. Combination G1/4 Low-Pressure 5 um |
|---|---|
| Series | GC300 F.R.L. combination |
| Composition | Filter + regulator + lubricator (3 units) |
| Port size | PT1/4" (G (BSPP) thread) |
| Filtering grade | 5 µm |
| Regulating range | 0.05 - 0.9 MPa (7 - 130 psi) |
| Pressure type | Low-pressure type |
| Fluid | Compressed air |
|---|---|
| Max. working pressure | 1.0 MPa (145 psi) |
| Temperature range | -5 to +70 °C (unfreeze) |
| Drain type | Manual drain |
| Bowl material | PC |
| Pressure gauge | Fitted — round, 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. The low-pressure type adjusts over a lower band than standard; we confirm the exact figures from the factory datasheet. 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". |
| M | Drain: Manual drain — this also sets the regulating band (0.05 - 0.9 MPa (7 - 130 psi)). |
| L | Low-pressure type. Blank is standard, L is the low-pressure type. |
| (blank) | Pressure gauge fitted (blank). |
| C | Gauge shape: Round. C is round, F is square. |
| 2 | Gauge scale: psi. 1 is MPa, 2 is psi, 3 is bar. |
| W | Filtering grade 5 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" · 5 µm |
|---|---|
| One size down | GC200 |
| One size up | GC400 |
| Two-unit equivalent | GFC300-08 |
| Build order | Filter → regulator → lubricator |
Feeds spray guns and atomising stations on a finishing line, where the 5 um element protects the gun from water and particulate and the lubricator mists oil into the air stream for smooth trigger and needle valve operation.
Conditions the air feeding carton sealers, case packers and bagging machines, giving the cylinders and actuators on the conveyor line filtered, regulated and lubricated air at a set pressure.
Supplies workholding clamps and small pneumatic presses on a machining cell, where the regulator holds a steady clamping pressure, the 5 um grade keeps valve spools clean and the lubricator reduces seal and bore wear.
Start from the flow your line needs and step up through the sizes (200, 300, 400, 600), each with its matching port - here 300 with a 1/4 in port. Because published flow is a curve, not one rated number, ask us to check the curve against your application before ordering. This unit carries the 5 um element; the 40 um standard grade is available if finer filtration is not required. The manual drain means an operator opens the bowl drain periodically - if you prefer automatic or differential-pressure draining, those variants exist in the family. The low-pressure regulator type is chosen where the working band sits below the standard range; the exact adjustment range for the low-pressure type is not published in the sheet we work from, so we confirm it on request. The round psi gauge is fitted here; embedded square gauges and MPa/bar scales are the other options. Thread is G in this code, with PT (standard) and NPT as orderable alternatives, and the mounting bracket is included.
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 this series as curves, not as a single rated figure, so we do not quote a rated flow, Cv or SCFM number. Tell us your application and we will confirm the flow figures from the datasheet on request before you order.
The M in the code GC30008MLC2WG specifies a manual drain on the filter bowl: condensate is emptied by opening the drain by hand as part of routine checks. The GC family also offers automatic and differential-pressure drain variants, so if you would rather not rely on manual draining, we can quote the matching code.
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.