The AirTAC GFR30008ALF2WGK AirTAC Filter Regulator G1/4, 5 um, Auto 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 GFR300-08 is a filter regulator: it removes water and particulate from compressed air and holds downstream pressure in a single body. This configuration carries a G1/4 port, a 5 um filter element (the finer of the two published grades), an automatic drain that ejects collected condensate without manual attention, and the low-pressure regulator type for circuits that run below standard regulator settings. The embedded square gauge reads in psi, a reverse/check valve is fitted, the polycarbonate bowl is fitted, and a mounting bracket is included.
This is a genuine AirTAC part from the GFR series, which spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 inch, and options including manual or differential-pressure drains, the 40 um standard element, gauge scales in MPa, psi or bar, and PT or NPT threads. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C (non-freezing). Flow is published as curves rather than a single rating, so we confirm flow and full datasheet figures on request.
| Model | GFR30008ALF2WGK AirTAC Filter Regulator G1/4, 5 um, Auto |
|---|---|
| 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 | Low-pressure 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 — square, 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. The low-pressure type adjusts over a lower band than standard; we confirm the exact figures from the factory datasheet. 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)). |
| L | Low-pressure type. Blank is standard, L is the low-pressure type. |
| (blank) | Mounting bracket included. |
| (blank) | Pressure gauge fitted (blank). |
| F | Gauge shape: Square. 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. |
| 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) |
Feeding a clamping-cylinder circuit on a pneumatic press, where the low-pressure regulator type suits gentle clamp settings and the 5 um element protects the directional valve from particulate and water.
Conditioning air for a packaging machine's sealing and diverting cylinders: the automatic drain keeps condensate out during continuous runs and the square psi gauge gives operators a local setpoint readout.
Supplying a pick-and-place robot's gripper circuit, where the fitted reverse/check valve is wanted in the circuit and the single-body filter-regulator layout saves panel space at the cell.
Size and port set the flow path: this unit is size 300 with a G1/4 port, and you can step through sizes 200, 400 and 600 as your line's air demand grows. Where a bowl is fitted you choose the drain: automatic (this unit), manual, or the differential-pressure default - automatic suits unattended duty, manual suits scheduled inspection rounds. Filter grade is 5 um here against the 40 um standard; choose 5 um where downstream valves and cylinders need finer protection. The square gauge is fitted with a psi scale; MPa and bar scales and an external round gauge are the alternatives. Thread is G here, with PT (the standard) and NPT orderable, and the bracket is included. Because flow is published as curves rather than a single rating, ask us to confirm sizing against your application before ordering.
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 GFR series as curves, not as a single rated figure, so we do not quote a number here. Send us your line's air demand and we will confirm the correct size and flow from the datasheet on request.
This unit carries code A for an automatic drain, which ejects collected condensate on its own - useful on lines that run unattended. Manual-drain and differential-pressure-drain versions of the same GFR300 filter regulator are available if your maintenance routine prefers them.
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.