The AirTAC GFR300C08ALC2W AirTAC Filter Regulator PT1/4 5 um Auto Drain is a genuine G-series filter regulator: water separation, 40 µm particulate filtration and balanced-type pressure regulation combined in a single body. It has See datasheet ports, a differential-pressure drain and regulates 0.15 - 0.9 MPa (20 - 130 psi). It does not lubricate — add a GL lubricator, or order the GFC two-unit set, if downstream equipment needs oil.
The AirTAC GFR300C08ALC2W is a size 300 filter regulator that removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration is built with a 5 um filtration element (code W) for finer particle removal than the standard 40 um grade, an automatic drain that expels collected condensate without manual attention, a low-pressure regulator type, and an external round gauge with a psi scale. The 1/4 in PT port is the standard thread for this unit, a polycarbonate bowl is fitted at this size, and a mounting bracket is included.
This is a genuine AirTAC part. The GFR filter-regulator family is available in sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, and with choices of drain type, filter grade, gauge style and scale, thread (PT standard, G and NPT as order options) and bracket. Flow figures for this series are published as curves rather than a single rating, so ask us to confirm the datasheet figures for your application on request.
| Model | GFR300C08ALC2W AirTAC Filter Regulator PT1/4 5 um Auto Drain |
|---|---|
| Series | GFR300 filter regulator |
| Port size | See datasheet (PT thread) |
| Filtering grade | 40 µm |
| Regulating range | 0.15 - 0.9 MPa (20 - 130 psi) |
| Pressure type | Standard type |
| Adjusting mechanism | Balanced type |
| Fluid | Compressed air |
|---|---|
| Max. working pressure | 1.0 MPa (145 psi) |
| Temperature range | -5 to +70 °C (unfreeze) |
| Drain type | Differential-pressure drain |
| Bowl material | PC |
| Pressure gauge | Fitted — factory standard, Factory standard 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). Air must not freeze in the unit. Flow curves, weight and outline dimensions are not published in our data set — ask us and we will confirm from the factory datasheet.
| GFR300 | G-series filter regulator, 300 body — sets the port range. |
|---|---|
| C0 | Port size See datasheet. This body offers 08 = PT1/4", 10 = PT3/8", 15 = PT1/2". |
| (blank) | Drain: Differential-pressure 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) | Mounting bracket included. |
| (blank) | Pressure gauge fitted (blank). |
| (blank) | Gauge shape: Factory standard. C is round, F is square. |
| (blank) | Gauge scale: Factory standard. 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. |
| (blank) | No reverse-flow valve (the default). |
Field order is size, port, drain, type, bracket, gauge, shape, scale, grade, thread, reflux — a blank position takes the default. Example: GFR300-08 is a 300 body, PT1/4", differential drain, standard type, bracket included, gauge fitted, 40 µm, PT thread, no reflux valve.
A larger body carries a larger port and holds set pressure better as flow rises. AirTAC publishes flow only as curves, so size the body from your peak demand with headroom. The GFR600 uses an aluminium-alloy bowl; the 200, 300 and 400 bodies use PC.
| This model | GFR300 · See datasheet · 40 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-C0 (two-unit set) |
Feeds cleaned, regulated air to gripper circuits on a packaging line, where the 5 um element protects close-tolerance fittings and the automatic drain keeps condensate out of the supply without operator attention.
Sits ahead of clamping or pressing cylinders that need a stable, lower pressure than the main header, with the round psi gauge giving a direct local reading at the machine.
Provides filtered, reduced-pressure air for bench-top test rigs and lab automation, where finer 5 um filtration and a bracket-mounted, gauge-equipped unit keep the setup tidy and repeatable.
Choose the size and port step against the air demand of the circuit: this unit is size 300 with a 1/4 in PT port, and the family steps up through sizes 400 and 600 for larger ports and higher flow. Because flow for this series is published as curves and not as a single rated figure, ask us to confirm sizing against your application before ordering. Other real, decodable choices: drain type (this unit has an automatic drain; manual and differential-pressure drains exist in the family), filter grade (5 um as coded here with W, versus the 40 um standard), gauge style and scale (this unit carries an external round gauge on a psi scale), thread (PT is standard; G and NPT are order options), and bracket (included here). As a low-pressure type regulator, the exact adjustment range is not published in the material we hold - confirm it with us on request.
Quick checklist
The PC bowl must not be cleaned with solvents — wipe it with a dry cloth. Without the K option, air cannot flow back through the unit. A filter regulator adds no oil to the line.
AirTAC publishes flow for the GFR series as curves rather than a single rated figure, so we do not quote a rated flow number. Tell us your application and we will confirm the relevant datasheet flow figures on request before you order.
The W code in GFR300C08ALC2W selects the optional 5 um filtration grade, which removes finer particles than the 40 um standard element. Choose 5 um where downstream components are sensitive to fine particulate; the 40 um grade remains the default across the GFR family if your circuit does not need it.
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.