The AirTAC GFR30008AC2W AirTAC Filter Regulator PT1/4 Auto Drain 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.
GFR30008AC2W is an AirTAC G-series filter regulator: water and particulate removal plus downstream pressure regulation in one body. This 300-size unit has a 1/4 in PT port, the finer 5 um filter element, an automatic drain on the polycarbonate bowl, and the round external pressure gauge in the psi scale. Regulation range with the automatic drain is 0.15-0.9 MPa (20-130 psi) within a 1.0 MPa (145 psi) maximum inlet, operating from -5 to 70 C, with a mounting bracket included.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 in, plus drain choices (differential-pressure, automatic, manual), 40 um or 5 um elements, gauge scale options and G/NPT thread options. Flow for this model is published as curves rather than a single rating - ask us and we will confirm the datasheet figures for your application.
| Model | GFR30008AC2W AirTAC Filter Regulator PT1/4 Auto Drain |
|---|---|
| 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 | 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. |
| (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 · PT1/4" · 5 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-08 (two-unit set) |
Feeding clean, regulated air to the pneumatic lift and clamp cylinders on an analytical instrument handling frame; the 5 um element and automatic drain keep moisture and fines out of precision actuators.
A regulated 1/4 in supply for pop-up stops and diverters on a packaging conveyor, with the automatic drain clearing condensate through long production runs.
Filtered, psi-gauged regulated air for the tool-clamp cylinder on a small machining centre, holding a steady clamp-pressure setting at the machine.
Step up to the 300 size with its 1/4 in port when a 200 body is too small for the air demand at your set pressure; 400 and 600 cover larger flows. Drain choice matters: the automatic drain here purges condensate unattended, manual drain lowers the regulation floor to 0.05-0.9 MPa (7-130 psi), and differential-pressure is the catalogue default. The 5 um W element suits cleaner air than the 40 um standard. Thread is PT as standard, with G (BSPP) and NPT as catalogue options; a no-bracket J version is also listed. Flow is published as curves, not a single rating - confirm sizing with us before ordering.
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 GFR300 as characteristic curves rather than a single rated figure, so we do not quote one number. Send us your inlet pressure, set pressure and expected air demand, and we will confirm the datasheet curve and sizing for your application.
The W option filters to 5 um for cleaner air ahead of sensitive valves and cylinders; the blank code is the 40 um standard element for general plant air. Both are catalogue choices on this 300-size body, while the rest of the code - automatic drain, round psi gauge, PT thread - stays the same.
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.