The AirTAC GFR30008AC2WK AirTAC Filter Regulator PT1/4, 5 um is a genuine G-series filter regulator: water separation, 5 µm particulate filtration and balanced-type pressure regulation combined in a single body. It has PT1/4" ports, a automatic 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 GFR30008AC2WK is a 300-size filter regulator that removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration is fitted with a 5 um filter element for finer particulate capture than the standard 40 um grade, an automatic drain that expels collected condensate without manual attention, and a reverse/check valve that holds the set pressure when the upstream supply is lost. The round external gauge reads in psi, and the unit carries a maximum inlet pressure of 1.0 MPa (145 psi) with an operating temperature range of -5 to 70 C (non-freezing). The polycarbonate bowl suits the 300 size, and the standard regulation range for automatic-drain units is 0.15-0.9 MPa (20-130 psi).
This is a genuine AirTAC part. The GFR300 series shares a 1/4 in port size with 200, 400 and 600 siblings, and is available with 40 um or 5 um filtration, differential-pressure, automatic or manual drains, embedded square or external round gauges in MPa, psi or bar scales, PT, G or NPT threads, and bracket options. Flow figures are published as curves rather than a single rating, so we confirm datasheet and sizing details on request.
| Model | GFR30008AC2WK AirTAC Filter Regulator PT1/4, 5 um |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT1/4" (PT thread) |
| Filtering grade | 5 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 | 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. 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. |
|---|---|
| 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) | Mounting bracket included. |
| (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. |
| K | Reverse-flow (reflux) valve fitted. |
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 · PT1/4" · 5 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-08 (two-unit set) |
Feeds filtered, regulated air to the tool-clamp and chuck-actuation circuits on a machining centre, with the 5 um element protecting precision valve spools and the check valve holding clamp pressure through supply dips.
Supplies regulated air to the stopper cylinders and pusher gates along a packaging conveyor, where the automatic drain keeps condensate out of the actuators during continuous shifts without operator attention.
Conditions the compressed air feeding bench-top analytical and test instruments, using the 5 um grade and stable regulated output to keep sensitive pneumatic controls free of water and fine particulate.
Choose the 300 size with its 1/4 in PT port when your line flow sits in the mid range of the G-series ladder; step up to 400 or 600 for larger demand, or down to 200 for compact circuits, and ask us to confirm the flow curve against your application before ordering. This unit's 5 um element suits air tools, valves and instruments that need finer filtration than the standard 40 um grade, and the automatic drain keeps the bowl clear in unattended installations. The round psi gauge gives a clear external readout, and the fitted check valve protects the set pressure. PT thread is standard; G (BSPP) and NPT are order options, and a mounting bracket is included.
Quick checklist
The PC bowl must not be cleaned with solvents — wipe it with a dry cloth. The reflux valve permits reverse flow through the unit. A filter regulator adds no oil to the line.
AirTAC publishes flow for the GFR300 series as curves rather than a single rated figure, so no single number would be honest. Send us your inlet pressure and demand and we will confirm the flow curve and sizing from the datasheet before you order.
The A in the code sets the automatic drain, which ejects collected condensate on its own instead of waiting for a manual dump - useful for unattended or hard-to-reach installations. The W sets the 5 um filter element, one grade finer than the 40 um standard, for downstream equipment that needs cleaner air.
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.