The AirTAC GC300-10 AirTAC F.R.L. Combination, G3/8, 5 um, 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 PT3/8" ports, a 5 µm element, a automatic drain and regulates 0.15 - 0.9 MPa (20 - 130 psi).
The GC300-10 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 for 3/8 in (G3/8) compressed-air lines. This configuration carries the 5 um filter element (code W) for finer water and particulate removal than the standard 40 um grade, an automatic drain that expels collected condensate from the filter bowl without manual attention, a low-pressure type regulator, a round gauge reading in psi, a fitted reverse/check valve, and a mounting bracket. The medium is compressed air only, with a maximum working (inlet) pressure of 1.0 MPa (145 psi) and an operating temperature range of -5 to 70 C (non-freezing). The filter bowl on this 300 size is PC (polycarbonate).
This is a genuine AirTAC part. The GC series is offered in sizes 200, 300, 400 and 600 with a choice of ports, threads (PT standard; G and NPT as order options), drain types, filter grades, gauge styles and scales, and reverse/check valve. Because flow is published as curves rather than a single rated figure, we confirm flow and other datasheet figures for your application on request.
| Model | GC300-10 AirTAC F.R.L. Combination, G3/8, 5 um, Auto Drain |
|---|---|
| Series | GC300 F.R.L. combination |
| Composition | Filter + regulator + lubricator (3 units) |
| Port size | PT3/8" (G (BSPP) thread) |
| Filtering grade | 5 µm |
| Regulating range | 0.15 - 0.9 MPa (20 - 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 | Automatic drain |
| Bowl material | PC |
| Pressure gauge | Fitted — round, 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. 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. |
|---|---|
| 10 | Port size PT3/8". 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)). |
| 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. |
| 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: GF300-10 filter, GR300-10 regulator and GL300-10 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 · PT3/8" · 5 µm |
|---|---|
| One size down | GC200 |
| One size up | GC400 |
| Two-unit equivalent | GFC300-10 |
| Build order | Filter → regulator → lubricator |
Feeding air tools, clamps and actuated fixtures on a vehicle assembly line: the filter stage strips water and fine particulate, the low-pressure regulator holds a stable supply pressure, and the lubricator carries a fine oil mist to keep air tools and cylinders running smoothly.
Supplying the pneumatic cylinders and valves on a packaging or carton-sealing conveyor line, where the 5 um element protects sensitive directional valves, the automatic drain keeps condensate out of the circuit during continuous runs, and the lubricator mists the actuator seals.
Conditioning shop air for lab benches, test rigs and pilot-scale process equipment, where the fine 5 um grade, low-pressure regulation and psi gauge give operators clean, readable, gently regulated air for instruments and small pneumatic devices.
Start with the size and port: this unit is size 300 with a 3/8 in port; if your line needs a different flow step, the GC family also comes in 200, 400 and 600 sizes with matching ports. This code specifies the 5 um filter element (W) instead of the standard 40 um grade - choose 5 um where downstream equipment needs finer filtration. The automatic drain (A) handles condensate discharge on its own; manual and differential-pressure drain versions are also available in the family. The regulator here is the low-pressure type; its exact adjustment range is not published, so ask us to confirm it against your set pressure. The round gauge reads in psi (scales in MPa and bar are the other catalogue options), a reverse/check valve is fitted, and the mounting bracket is included. Thread is G (BSPP) on this code; PT is the standard thread, with G and NPT as order options. Flow is published as curves, not a single rating, so ask us to confirm sizing against your application before ordering.
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 GR300-10 regulator with a GF300-10 filter on that branch.
AirTAC publishes flow for the GC series as curves rather than a single rated figure, so we do not quote a rated flow, Cv or SCFM number. Tell us your line pressure and the flow your application needs, and we will confirm the correct size against the datasheet curves on request before you order.
This GC300-10 is built with the low-pressure type regulator (code L) instead of the standard version, and its exact adjustment range is not published - we confirm it against your set pressure on request. The fitted round gauge reads in psi; the catalogue also offers an embedded square gauge and MPa or bar scales if a different style suits your panel.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
Standard models are processed and dispatched in 3-5 business 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.