The AirTAC GFR30010ALJF1WTK AirTAC Filter Regulator NPT3/8 5um 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 PT3/8" 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 GFR30010ALJF1WTK 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 built for a 3/8 in NPT port, uses the fine 5 um filter element (code W) where standard 40 um filtration is not fine enough, and carries an automatic drain so collected condensate is expelled without manual attention. It is the low-pressure (L) type for circuits that hold lower regulated set pressures, and it includes a reverse/check valve (K) plus an embedded square gauge reading in MPa. No mounting bracket is fitted (code J).
This is a genuine AirTAC part from the GFR series, which spans sizes 200, 300, 400 and 600 with port options from 1/8 in to 1 in, a choice of differential-pressure, automatic or manual drains, 40 um or 5 um filtration, standard or low-pressure regulation, gauge and thread options. Flow is published as curves rather than a single rating, so we confirm the datasheet and sizing figures on request before you order.
| Model | GFR30010ALJF1WTK AirTAC Filter Regulator NPT3/8 5um |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT3/8" (NPT 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, MPa 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. |
|---|---|
| 10 | Port size PT3/8". 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. |
| 1 | Gauge scale: MPa. 1 is MPa, 2 is psi, 3 is bar. |
| W | Filtering grade 5 µm. Only 40 µm (blank) and 5 µm (W) exist. |
| T | NPT 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 · PT3/8" · 5 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-10 (two-unit set) |
A 3/8 in filtered-and-regulated supply feeds clamping cylinders on machining fixtures; the 5 um element helps protect the clamp valves and the automatic drain keeps condensate out of an unattended cell.
Packaging machinery sections that hold lower set pressures get filtration and regulation from one body; the low-pressure regulator type and built-in square MPa gauge suit dialling in and monitoring the set point.
A single filter-regulator ahead of the cell's valve manifold conditions the supply for gripper and vacuum-generator circuits, with the check valve holding the downstream side and the automatic drain handling moisture.
Start with the port step: this unit is the 300 size with a 3/8 in NPT thread; step up to 400 or 600 if the circuit needs a larger port, or down to 200 for smaller lines. Choose the drain to match access: automatic (as here) suits enclosed or infrequently attended installations, manual suits supervised points, and differential-pressure is the default. The 5 um element (W) is the right call for downstream valves and cylinders that need finer filtration than the 40 um standard. The embedded square gauge reads in MPa; psi or bar scales and an external round gauge are order options. PT is the standard thread and G or NPT are ordered as specification options; a bracket can be added if this no-bracket (J) build needs one. 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 GFR300 as curves rather than a single rated figure, so we do not quote a number. Send us your application details and we will confirm the flow and sizing from the datasheet on request before you order.
The code decodes it that way: A is the automatic drain, which expels collected condensate without manual attention, and W is the 5 um filter element, one grade finer than the 40 um standard. Both are decodable choices - manual or differential-pressure drains and the 40 um element are available in the same series if your application 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.