The AirTAC GFR30008AC2WG AirTAC Filter Regulator G1/4, 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 GFR30008AC2WG is a 300-size filter regulator that removes water and particulate from compressed air and sets downstream pressure in a single body. This configuration is built on a G1/4 (BSPP) port, carries the fine 5 um filter element (code W) for cleaner air than the standard 40 um grade, and uses an automatic drain that expels collected condensate without manual attention. Pressure is set with the standard-type regulator across a 0.15-0.9 MPa (20-130 psi) adjustment range, read on the fitted external round gauge with a psi scale. The polycarbonate bowl suits the 300 size, a mounting bracket is included, and maximum inlet pressure is 1.0 MPa (145 psi) with an operating temperature of -5 to 70 C (non-freezing).
This is a genuine AirTAC part from the GFR family, which spans sizes 200, 300, 400 and 600 with port sizes from 1/8 to 1 inch, a choice of drain types, 40 um or 5 um filtration, gauge styles and scales, and PT, G or NPT threads. Flow figures for this series are published as curves rather than a single rating, so ask us to confirm the datasheet and sizing for your application before ordering.
| Model | GFR30008AC2WG AirTAC Filter Regulator G1/4, 5 um |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT1/4" (G (BSPP) 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 | 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. |
|---|---|
| 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. |
| G | G (BSPP) 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 · PT1/4" · 5 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-08 (two-unit set) |
Feeding clean, regulated air to solenoid valves and pneumatic clamps on a machining centre, where the 5 um element helps protect fine valve internals from particles and the automatic drain keeps condensate off the circuit.
Supplying regulated air to conveyor-mounted diverters, pushers and sealing cylinders on a packaging line, with the round psi gauge letting operators set and verify line pressure at a glance.
Conditioning shop air for lab automation frames and sample-handling actuators, where the 5 um grade and stable 0.15-0.9 MPa regulation support consistent actuator behaviour in a compact 1/4-inch footprint.
Choosing within the GFR series comes down to a few decodable decisions. Size and port step (200 through 600, 1/8 to 1 inch) should follow the air demand of the circuit - step up when the downstream consumption outgrows the smaller bodies. Drain type is a real choice: automatic (this unit) for unattended condensate removal, manual where you prefer operator control, or the differential-pressure default. Filter grade is 40 um standard or 5 um (code W) when finer particle removal is needed - this model carries the 5 um element. Gauge style is embedded square (standard) or external round, with MPa, psi or bar scales; this unit has a round psi gauge. Thread is PT as the catalogue standard with G (BSPP) and NPT as order options, and a bracket can be included or omitted.
Flow for this series is published as curves, not a single rated figure, so we do not quote a number here. Send us your application details and we will confirm the datasheet and correct size before you order.
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 number here. Tell us your application and downstream air demand, and we will confirm the datasheet and check the 300-size, G1/4 unit against your requirement before you order.
The A in the code specifies an automatic drain, which expels collected condensate from the bowl without operator attention. The GFR series also offers a manual drain (code M) where you prefer controlled draining, and a differential-pressure drain as the default. All three share the same filtration and regulation function; only the condensate handling differs.
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.