AirTAC GC300-08 FRL Unit (GC30008AF1K)
The AirTAC AirTAC GC300-08 FRL Unit (GC30008AF1K) 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).
- TypeF.R.L. combination (3 units)
- Port sizePT1/4"
- Regulating range0.15 - 0.9 MPa (20 - 130 psi)
- Filtering grade40 µm
- DrainAutomatic drain
- Bowl materialPC
- Pressure gaugeFitted
- ThreadPT
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the AirTAC GC300-08 FRL Unit (GC30008AF1K)
GC30008AF1K is a three-unit AirTAC G-series F.R.L. combination - separate filter, regulator and lubricator for 1/4 in (PT1/4) ports - with a reverse (check) valve fitted. The check valve prevents backflow through the set, helping the regulator hold its set pressure downstream when the upstream supply dips or is shut off, while the 40 um element and automatic drain keep the air clean and the bowl clear without manual attention.
This is a genuine AirTAC part. The G series spans 200, 300, 400 and 600 sizes, handles compressed air only up to 1.0 MPa (145 psi) at -5 to 70 C, and uses polycarbonate bowls at the 300 size. AirTAC publishes flow as curves rather than a single rating, so we confirm flow and other datasheet figures on request.
AirTAC GC300-08 FRL Unit (GC30008AF1K) Technical Specifications
| Model | AirTAC GC300-08 FRL Unit (GC30008AF1K) |
|---|---|
| Series | GC300 F.R.L. combination |
| Composition | Filter + regulator + lubricator (3 units) |
| Port size | PT1/4" (PT 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, MPa 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.
Model Code: AirTAC GC300-08 FRL Unit (GC30008AF1K)
| 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. |
| 1 | Gauge scale: MPa. 1 is MPa, 2 is psi, 3 is bar. |
| (blank) | Filtering grade 40 µm. Only 40 µm (blank) and 5 µm (W) exist. |
| (blank) | PT 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.
Size Class & How It Differs From GFC
- GC200PT1/8" - PT1/4"
- GC300PT1/4" - PT1/2"
- GC400PT3/8" - PT1/2"
- GC600PT3/4" - PT1"
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 |
Where the AirTAC GC300-08 FRL Unit (GC30008AF1K) Is Used
Clamping fixtures that must hold through supply dips
On machining and welding fixtures, the check valve helps the clamped side retain its set pressure when shop air sags or the main valve upstream closes, protecting the workpiece position.
Pneumatic actuator circuits needing backflow protection
Feeding quarter-turn and process actuator circuits, the set supplies clean, regulated, lubricated air while the reverse valve stops downstream air pushing back through the prep station.
Pneumatic press holding circuits
Small pneumatic presses benefit from a steady set pressure; the K valve helps maintain it between strokes, and the automatic drain keeps the filter bowl emptied through repeated cycles.
Is the AirTAC GC300-08 FRL Unit (GC30008AF1K) the Right Station?
This code matches the standard 300-size, 1/4 in PT set - 40 um element, automatic drain, embedded square MPa gauge - and adds the K reverse/check valve, the option to pick when the downstream circuit must keep its pressure through supply interruptions. Without the K the same set is ordered as GC30008AF1. Drain, filter grade, gauge scale and thread (G or NPT instead of the PT standard) can all be varied across the GC range. The regulator adjusts 0.15-0.9 MPa (20-130 psi) with this automatic drain. Flow is published as curves rather than a single rating, so ask us to confirm sizing against your application before ordering.
Quick checklist
- ✓ Body size for your peak flow (PT1/4" here)
- ✓ Element 40 µm or 5 µm
- ✓ Drain sets the regulating band
- ✓ Gauge fitted, shape and scale
- ✓ Three-unit (GC) or two-unit (GFC) layout
- ✓ Oil mist acceptable downstream
Installation & Maintenance Notes
- check Install with the airflow arrow: filter first, lubricator last.
- check Mount vertically, bowls down.
- check Keep inlet pressure at or below 1.0 MPa (145 psi).
- check Adjust only within 0.15 - 0.9 MPa (20 - 130 psi).
- check Drain condensate before the bowl fills; check the oil level.
- check Keep the station above freezing (-5 to +70 °C, unfreeze).
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 GC300-08 FRL Unit (GC30008AF1K) FAQ
AirTAC publishes G-series flow as characteristic curves rather than one rated figure, so there is no single flow number we can honestly quote. Share your required flow and pressure and we will verify the 300-size, 1/4 in unit against the datasheet curves on request.
It means a reverse (check) valve is fitted to the set. The valve blocks backflow through the unit, helping the downstream circuit hold the regulator setting when upstream pressure drops. Everything else - 40 um element, automatic drain, square MPa gauge, 1/4 in PT ports - matches the standard GC30008AF1.
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Related AirTAC Air-Preparation Units
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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.