AirTAC GC300-08 FRL Unit (GC30008MLF1WK)
The AirTAC AirTAC GC300-08 FRL Unit (GC30008MLF1WK) 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).
- TypeF.R.L. combination (3 units)
- Port sizePT1/4"
- Regulating range0.05 - 0.9 MPa (7 - 130 psi)
- Filtering grade5 µm
- DrainManual drain
- Bowl materialPC
- Pressure gaugeFitted
- ThreadPT
About the AirTAC GC300-08 FRL Unit (GC30008MLF1WK)
GC30008MLF1WK is an AirTAC GC three-unit air-treatment combination: a separate air filter, pressure regulator and lubricator piped as one set. This 300-size set is ported 1/4 in with standard PT thread. The filter bowl has a manual drain and a 5 um element (code W); the regulator is the low-pressure type (code L) with a 0.05-0.9 MPa (7-130 psi) setting range for this manual-drain configuration; code F1 fits the square gauge reading in MPa; and the trailing K fits a reverse (check) valve so downstream pressure is held if supply pressure drops. Maximum working pressure is 1.0 MPa (145 psi), temperature range is -5 to 70 C (non-freezing), and the 300-size bowls are PC (polycarbonate).
This is a genuine AirTAC part. The GC series spans 200, 300, 400 and 600 sizes with ports from 1/8 in to 1 in, and the K check-valve, drain, grade, gauge and thread options are order choices. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet figures for your application.
AirTAC GC300-08 FRL Unit (GC30008MLF1WK) Technical Specifications
| Model | AirTAC GC300-08 FRL Unit (GC30008MLF1WK) |
|---|---|
| Series | GC300 F.R.L. combination |
| Composition | Filter + regulator + lubricator (3 units) |
| Port size | PT1/4" (PT thread) |
| Filtering grade | 5 µm |
| Regulating range | 0.05 - 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 — 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. 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.
Model Code: AirTAC GC300-08 FRL Unit (GC30008MLF1WK)
| 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). |
| F | Gauge shape: Square. C is round, F is square. |
| 1 | Gauge scale: MPa. 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. |
| 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" · 5 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 (GC30008MLF1WK) Is Used
Press clamping circuit
Feeding pneumatic clamps on a machining-center fixture: the check valve holds clamp pressure while the operator swaps workpieces and the supply line is vented, while the regulator keeps clamping force consistent.
Power press supply
Air preparation for a mechanical press counterbalance and clutch circuit: filtered, regulated air with the check valve preventing backflow surprises when the plant main is shut down for maintenance.
Valve test bench
Instrument-grade supply for a valve test rig: the 5 um element protects the test manifold, the low-pressure type regulator sets test pressures gently, and the check valve keeps the test volume from draining back.
Is the AirTAC GC300-08 FRL Unit (GC30008MLF1WK) the Right Station?
Size the set across 200, 300, 400 and 600 to match port and flow; 300 with 1/4 in PT fits compact machine supply lines. Choose the K suffix when the circuit must hold pressure downstream if the supply drops - otherwise the non-K set is the like-for-like choice. Drain is manual here (0.05-0.9 MPa setting range); automatic and differential-pressure drains are also available. The 5 um W element suits finer-air duties; the standard grade is 40 um. Keep the square MPa gauge or order no-gauge, psi or bar variants. PT thread is standard; G(BSPP) and NPT are order options. Flow is published as curves, not a single rating - ask us to confirm sizing 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 0.05 - 0.9 MPa (7 - 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 (GC30008MLF1WK) FAQ
Yes. AirTAC publishes G-series flow as curves rather than a single rated figure, so we do not quote one number on the page. Tell us your working pressure and air demand and we will confirm the datasheet curve for this 300-size, 1/4 in set on request.
The trailing K fits a reverse (check) valve in the set, so downstream pressure is held if upstream supply falls. The otherwise identical GC30008MLF1W without K has no check valve. Choose K only where the circuit genuinely needs pressure retention.
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