The AirTAC GFR30008ALJF2WK 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 GFR30008ALJF2WK is an AirTAC GFR300 filter regulator: one body that removes water and particulate from compressed air and regulates downstream pressure. This configuration is built for 1/4 in PT ports, carries a 5 um filter element, and drains condensate automatically, so the bowl is emptied without anyone bleeding it by hand. It is the low-pressure type, intended for circuits that run below standard line pressure, with a square pressure gauge scaled in psi and a reverse (check) valve fitted. No mounting bracket is 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, PC or aluminium-alloy bowls, manual, automatic or differential-pressure drains, 40 um standard or 5 um elements, and gauge choices in MPa, psi or bar. Flow is published as curves rather than a single rated figure, so send us your application and we will confirm the sizing and datasheet figures on request.
| Model | GFR30008ALJF2WK 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 | 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. |
| J | Supplied without bracket. |
| (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. |
| (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 pneumatic clamps and fixtures on an assembly line that runs below standard line pressure, with the 5 um element protecting the clamp valves from dirt and moisture.
Sits ahead of paint-spray guns in a finishing booth, delivering clean, moisture-reduced air at a steady reduced pressure so atomizing stays consistent through a shift.
Supplies the small cylinders and actuators on a cartoning or labelling conveyor, with the automatic drain keeping condensate out of the bowl without daily manual bleeding.
The real choices on this family: step between sizes 200, 300, 400 and 600 to match the port and flow your line needs - this unit sits at size 300 with 1/4 in PT ports. Drain options are automatic (fitted here), manual or differential-pressure; automatic suits unattended duty where nobody is on hand to bleed the bowl. Filter grade is 5 um on this unit, with 40 um as the standard alternative - choose 5 um where downstream valves and cylinders need finer protection. The square gauge is scaled in psi; MPa and bar scales and an external round gauge are catalogue options. Thread is PT as standard, with G (BSPP) and NPT available to order, and brackets are optional (not fitted here). Flow is published as curves, not a single rating, so 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 this family as curves rather than a single rated figure, so we do not quote a number. Send us your line pressure, downstream demand and port size, and we will confirm the flow from the datasheet on request.
This unit carries code A - the automatic drain, which expels collected condensate without manual attention. Manual and differential-pressure drains are catalogue alternatives across the GFR family 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.