The AirTAC GC300-08 AirTAC F.R.L. Combination, PT1/4, 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 PT1/4" ports, a 5 µm element, a automatic drain and regulates 0.15 - 0.9 MPa (20 - 130 psi).
The GC300-08 is an AirTAC GC-series three-unit F.R.L. combination: a filter, a regulator and a lubricator delivered as one set for a 1/4 in PT port line. This configuration carries the optional 5 um filter element (tighter than the 40 um standard), an automatic drain on the filter bowl, a standard regulator with a 0.15-0.9 MPa (20-130 psi) adjustment range, and a round pressure gauge reading in psi. Maximum inlet pressure is 1.0 MPa (145 psi), the polycarbonate bowls suit the -5 to 70 C non-freezing range, and a mounting bracket is included.
This is a genuine AirTAC part. The GC line is published in sizes 200, 300, 400 and 600 with ports from 1/8 in to 1 in, in PT, G (BSPP) and NPT threads, with drain type, filter grade, gauge style and scale, and a reverse/check valve as orderable options. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet and check sizing for your application before ordering.
| Model | GC300-08 AirTAC F.R.L. Combination, PT1/4, 5 um, Auto Drain |
|---|---|
| Series | GC300 F.R.L. combination |
| Composition | Filter + regulator + lubricator (3 units) |
| Port size | PT1/4" (PT thread) |
| Filtering grade | 5 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 — 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. 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). |
| 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. |
| (blank) | PT 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 |
At a spray-booth drop, the set filters water and sludge down to 5 um ahead of the guns, holds a set regulator pressure for consistent atomising, and carries oil mist to the air tools used between coats.
Mounted at the wall drop feeding a machining centre, the combination cleans the shop air to 5 um, sets the pressure the machine's air circuit expects, and lubricates the actuated tool-clamp and chip-door cylinders.
On a cartoning conveyor, the unit conditions the supply to the pick-and-place cylinders: filtered air for the valves, regulated pressure for gentle box handling, and oil mist to keep the cylinders sealing well over long shifts.
Size and port come first: the 300 size with its 1/4 in PT port sits mid-range in the GC line (200/300/400/600), and the right step depends on the air demand of the circuit downstream - we can check the published flow curves against your consumption. Drain: this unit has an automatic drain, which empties the filter bowl without manual intervention; manual and differential-pressure drains are the alternatives. Filter grade: the fitted 5 um element (code W) protects finer downstream equipment than the 40 um standard. The round gauge reads in psi; an embedded square gauge and MPa or bar scales are the other options. Thread is PT as standard, with G (BSPP) and NPT available to order, and the mounting bracket is included. Because flow is published as curves, not a single rating, confirm sizing with us 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 GR300-08 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 a number. Tell us your line pressure and air consumption and we will confirm the datasheet curve and check the 300 size with its 1/4 in port against your application before you order.
The W code on this unit specifies the optional 5 um grade, which catches finer particles and sludge than the 40 um standard element - useful ahead of precision valves, cylinders or instruments. If your circuit does not need fine filtration, the 40 um standard is the lower-restriction choice; we can confirm both grades on the datasheet.
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.